cpython_chunk_15.py

# Auto-generated from cpython_chunk_15.txt

TEXT_DATA = r"""
.. date: 2022-12-05-01-39-10
.. gh-issue: 100001
.. nonce: uD05Fc
.. release date: 2022-12-06
.. section: Security
``python -m http.server`` no longer allows terminal control characters sent
within a garbage request to be printed to the stderr server log.
This is done by changing the :mod:`http.server`
:class:`BaseHTTPRequestHandler` ``.log_message`` method to replace control
characters with a :samp:`\\x{HH}` hex escape before printing.
..
.. date: 2022-11-11-12-50-28
.. gh-issue: 87604
.. nonce: OtwH5L
.. section: Security
Avoid publishing list of active per-interpreter audit hooks via the
:mod:`gc` module
..
.. date: 2022-11-30-11-09-40
.. gh-issue: 99891
.. nonce: 9VomwB
.. section: Core and Builtins
Fix a bug in the tokenizer that could cause infinite recursion when showing
syntax warnings that happen in the first line of the source. Patch by Pablo
Galindo
..
.. date: 2022-11-27-13-50-13
.. gh-issue: 91054
.. nonce: oox_kW
.. section: Core and Builtins
Add :c:func:`PyCode_AddWatcher` and :c:func:`PyCode_ClearWatcher` APIs to
register callbacks to receive notification on creation and destruction of
code objects.
..
.. date: 2022-11-26-04-00-41
.. gh-issue: 99729
.. nonce: A3ovwQ
.. section: Core and Builtins
Fix an issue that could cause frames to be visible to Python code as they
are being torn down, possibly leading to memory corruption or hard crashes
of the interpreter.
..
.. date: 2022-11-23-18-16-18
.. gh-issue: 99708
.. nonce: 7MuaiR
.. section: Core and Builtins
Fix bug where compiler crashes on an if expression with an empty body block.
..
.. date: 2022-11-21-11-27-14
.. gh-issue: 99578
.. nonce: DcKoBJ
.. section: Core and Builtins
Fix a reference bug in :func:`!_imp.create_builtin` after the creation of
the first sub-interpreter for modules ``builtins`` and ``sys``. Patch by
Victor Stinner.
..
.. date: 2022-11-19-22-27-52
.. gh-issue: 99581
.. nonce: yKYPbf
.. section: Core and Builtins
Fixed a bug that was causing a buffer overflow if the tokenizer copies a
line missing the newline character from a file that is as long as the
available tokenizer buffer. Patch by Pablo galindo
..
.. date: 2022-11-18-11-24-25
.. gh-issue: 99553
.. nonce: F64h-n
.. section: Core and Builtins
Fix bug where an :exc:`ExceptionGroup` subclass can wrap a
:exc:`BaseException`.
..
.. date: 2022-11-16-21-35-30
.. gh-issue: 99547
.. nonce: p_c_bp
.. section: Library
Add a function to os.path to check if a path is a junction: isjunction. Add
similar functionality to pathlib.Path as is_junction.
..
.. date: 2022-11-12-01-39-57
.. gh-issue: 99370
.. nonce: _cu32j
.. section: Library
Fix zip path for venv created from a non-installed python on POSIX
platforms.
..
.. date: 2022-11-11-14-04-01
.. gh-issue: 99377
.. nonce: -CJvWn
.. section: Core and Builtins
Add audit events for thread creation and clear operations.
..
.. date: 2022-11-10-17-09-16
.. gh-issue: 98686
.. nonce: bmAKwr
.. section: Core and Builtins
Remove the ``BINARY_OP_GENERIC`` and ``COMPARE_OP_GENERIC``
"specializations".
..
.. date: 2022-11-10-16-53-40
.. gh-issue: 99298
.. nonce: HqRJES
.. section: Core and Builtins
Remove the remaining error paths for attribute specializations, and refuse
to specialize attribute accesses on types that haven't had
:c:func:`PyType_Ready` called on them yet.
..
.. date: 2022-11-05-22-26-35
.. gh-issue: 99127
.. nonce: Btk7ih
.. section: Core and Builtins
Allow some features of :mod:`syslog` to the main interpreter only. Patch by
Donghee Na.
..
.. date: 2022-10-05-11-44-52
.. gh-issue: 91053
.. nonce: f5Bo3p
.. section: Core and Builtins
Optimizing interpreters and JIT compilers may need to invalidate internal
metadata when functions are modified. This change adds the ability to
provide a callback that will be invoked each time a function is created,
modified, or destroyed.
..
.. date: 2022-09-17-17-08-01
.. gh-issue: 90994
.. nonce: f0H2Yd
.. section: Core and Builtins
Improve error messages when there's a syntax error with call arguments. The
following three cases are covered: - No value is assigned to a named
argument, eg ``foo(a=)``. - A value is assigned to a star argument, eg
``foo(*args=[0])``. - A value is assigned to a double-star keyword argument,
eg ``foo(**kwarg={'a': 0})``.
..
.. bpo: 45026
.. date: 2021-08-29-15-55-19
.. nonce: z7nTA3
.. section: Core and Builtins
Optimize the :class:`range` object iterator. It is now smaller, faster
iteration of ranges containing large numbers. Smaller pickles, faster
unpickling.
..
.. bpo: 31718
.. date: 2020-02-23-23-48-15
.. nonce: sXko5e
.. section: Core and Builtins
Raise :exc:`ValueError` instead of :exc:`SystemError` when methods of
uninitialized :class:`io.IncrementalNewlineDecoder` objects are called.
Patch by Oren Milman.
..
.. bpo: 38031
.. date: 2019-09-04-19-09-49
.. nonce: Yq4L72
.. section: Core and Builtins
Fix a possible assertion failure in :class:`io.FileIO` when the opener
returns an invalid file descriptor.
..
.. date: 2022-12-05-13-40-15
.. gh-issue: 100001
.. nonce: 78ReYp
.. section: Library
Also \ escape \s in the http.server BaseHTTPRequestHandler.log_message so
that it is technically possible to parse the line and reconstruct what the
original data was.  Without this a \xHH is ambiguous as to if it is a hex
replacement we put in or the characters r"\x" came through in the original
request line.
..
.. date: 2022-12-03-05-58-48
.. gh-issue: 99957
.. nonce: jLYYgN
.. section: Library
Add ``frozen_default`` parameter to :func:`typing.dataclass_transform`.
..
.. date: 2022-11-22-19-31-26
.. gh-issue: 79033
.. nonce: MW6kHq
.. section: Library
Fix :func:`asyncio.Server.wait_closed` to actually do what the docs promise
-- wait for all existing connections to complete, after closing the server.
..
.. date: 2022-11-21-17-56-18
.. gh-issue: 51524
.. nonce: nTykx8
.. section: Library
Fix bug when calling trace.CoverageResults with valid infile.
..
.. date: 2022-11-21-13-49-03
.. gh-issue: 99645
.. nonce: 9w1QKq
.. section: Library
Fix a bug in handling class cleanups in :class:`unittest.TestCase`.  Now
``addClassCleanup()`` uses separate lists for different ``TestCase``
subclasses, and ``doClassCleanups()`` only cleans up the particular class.
..
.. date: 2022-11-21-10-45-54
.. gh-issue: 99508
.. nonce: QqVbby
.. section: Library
Fix ``TypeError`` in ``Lib/importlib/_bootstrap_external.py`` while calling
``_imp.source_hash()``.
..
.. date: 2022-11-17-10-56-47
.. gh-issue: 66285
.. nonce: KvjlaB
.. section: Library
Fix :mod:`asyncio` to not share event loop and signal wakeupfd in forked
processes. Patch by Kumar Aditya.
..
.. date: 2022-11-15-10-55-24
.. gh-issue: 97001
.. nonce: KeQuVF
.. section: Library
Release the GIL when calling termios APIs to avoid blocking threads.
..
.. date: 2022-11-15-04-08-25
.. gh-issue: 92647
.. nonce: cZcjnJ
.. section: Library
Use final status of an enum to determine lookup or creation branch of
functional API.
..
.. date: 2022-11-14-08-21-56
.. gh-issue: 99388
.. nonce: UWSlwp
.. section: Library
Add *loop_factory* parameter to :func:`asyncio.run` to allow specifying a
custom event loop factory. Patch by Kumar Aditya.
..
.. date: 2022-11-13-02-06-56
.. gh-issue: 99341
.. nonce: 8-OlwB
.. section: Library
Fix :func:`ast.increment_lineno` to also cover :class:`ast.TypeIgnore` when
changing line numbers.
..
.. date: 2022-11-12-12-15-30
.. gh-issue: 99382
.. nonce: dKg_rW
.. section: Library
Check the number of arguments in substitution in user generics containing a
:class:`~typing.TypeVarTuple` and one or more :class:`~typing.TypeVar`.
..
.. date: 2022-11-12-12-10-23
.. gh-issue: 99379
.. nonce: bcGhxF
.. section: Library
Fix substitution of :class:`~typing.ParamSpec` followed by
:class:`~typing.TypeVarTuple` in generic aliases.
..
.. date: 2022-11-12-12-08-34
.. gh-issue: 99344
.. nonce: 7M_u8G
.. section: Library
Fix substitution of :class:`~typing.TypeVarTuple` and
:class:`~typing.ParamSpec` together in user generics.
..
.. date: 2022-11-09-12-36-12
.. gh-issue: 99284
.. nonce: 9p4J2l
.. section: Library
Remove ``_use_broken_old_ctypes_structure_semantics_`` old untested and
undocumented hack from :mod:`ctypes`.
..
.. date: 2022-11-09-03-34-29
.. gh-issue: 99201
.. nonce: lDJ7xI
.. section: Library
Fix :exc:`IndexError` when initializing the config variables on Windows if
``HAVE_DYNAMIC_LOADING`` is not set.
..
.. date: 2022-11-08-15-54-43
.. gh-issue: 99240
.. nonce: MhYwcz
.. section: Library
Fix double-free bug in Argument Clinic ``str_converter`` by extracting
memory clean up to a new ``post_parsing`` section.
..
.. date: 2022-11-08-11-18-51
.. gh-issue: 64490
.. nonce: VcBgrN
.. section: Library
Fix refcount error when arguments are packed to tuple in Argument Clinic.
..
.. date: 2022-11-02-23-47-07
.. gh-issue: 99029
.. nonce: 7uCiIB
.. section: Library
:meth:`pathlib.PurePath.relative_to` now treats naked Windows drive paths
as relative. This brings its behaviour in line with other parts of pathlib.
..
.. date: 2022-10-24-11-01-05
.. gh-issue: 98253
.. nonce: HVd5v4
.. section: Library
The implementation of the typing module is now more resilient to reference
leaks in binary extension modules.
Previously, a reference leak in a typed C API-based extension module could
leak internals of the typing module, which could in turn introduce leaks in
essentially any other package with typed function signatures. Although the
typing package is not the original source of the problem, such non-local
dependences exacerbate debugging of large-scale projects, and the
implementation was therefore changed to reduce harm by providing better
isolation.
..
.. date: 2022-10-19-18-31-53
.. gh-issue: 98458
.. nonce: vwyq7O
.. section: Library
Fix infinite loop in unittest when a self-referencing chained exception is
raised
..
.. date: 2022-10-19-13-37-23
.. gh-issue: 93453
.. nonce: wTB_sH
.. section: Library
:func:`asyncio.get_event_loop` and many other :mod:`asyncio` functions like
:func:`asyncio.ensure_future`, :func:`asyncio.shield` or
:func:`asyncio.gather`, and also the
:meth:`~asyncio.BaseDefaultEventLoopPolicy.get_event_loop` method of
:class:`asyncio.BaseDefaultEventLoopPolicy` now raise a :exc:`RuntimeError`
if called when there is no running event loop and the current event loop was
not set. Previously they implicitly created and set a new current event
loop. :exc:`DeprecationWarning` is no longer emitted if there is no running
event loop but the current event loop was set.
..
.. date: 2022-10-16-18-52-00
.. gh-issue: 97966
.. nonce: humlhz
.. section: Library
On ``uname_result``, restored expectation that ``_fields`` and ``_asdict``
would include all six properties including ``processor``.
..
.. date: 2022-10-13-22-13-54
.. gh-issue: 98248
.. nonce: lwyygy
.. section: Library
Provide informative error messages in :func:`struct.pack` when its integral
arguments are not in range.
..
.. date: 2022-10-08-19-20-33
.. gh-issue: 98108
.. nonce: WUObqM
.. section: Library
``zipfile.Path`` is now pickleable if its initialization parameters were
pickleable (e.g. for file system paths).
..
.. date: 2022-10-08-15-41-00
.. gh-issue: 98098
.. nonce: DugpWi
.. section: Library
Created packages from zipfile and test_zipfile modules, separating
``zipfile.Path`` functionality.
..
.. date: 2022-10-02-12-38-22
.. gh-issue: 82836
.. nonce: OvYLmC
.. section: Library
Fix :attr:`~ipaddress.IPv4Address.is_private` properties in the
:mod:`ipaddress` module. Previously non-private networks (0.0.0.0/0) would
return ``True`` from this method; now they correctly return ``False``.
..
.. date: 2022-09-14-21-56-15
.. gh-issue: 96828
.. nonce: ZoOY5G
.. section: Library
Add an :const:`~ssl.OP_ENABLE_KTLS` option for enabling the use of the kernel
TLS (kTLS). Patch by Illia Volochii.
..
.. date: 2022-08-06-12-18-07
.. gh-issue: 88863
.. nonce: NnqsuJ
.. section: Library
To avoid apparent memory leaks when :func:`asyncio.open_connection` raises,
break reference cycles generated by local exception and future instances
(which has exception instance as its member var). Patch by Dong Uk, Kang.
..
.. date: 2022-04-23-03-46-37
.. gh-issue: 91078
.. nonce: 87-hkp
.. section: Library
:meth:`TarFile.next` now returns ``None`` when called on an empty tarfile.
..
.. bpo: 47220
.. date: 2022-04-04-22-54-11
.. nonce: L9jYu4
.. section: Library
Document the optional *callback* parameter of :class:`WeakMethod`. Patch by
Géry Ogam.
..
.. bpo: 44817
.. date: 2021-08-03-05-31-00
.. nonce: wOW_Qn
.. section: Library
Ignore WinError 53 (ERROR_BAD_NETPATH), 65 (ERROR_NETWORK_ACCESS_DENIED) and
161 (ERROR_BAD_PATHNAME) when using ntpath.realpath().
..
.. bpo: 41260
.. date: 2020-08-02-23-46-22
.. nonce: Q2BNzY
.. section: Library
Rename the *fmt* parameter of the pure Python implementation of
:meth:`datetime.date.strftime` to *format*.
..
.. bpo: 15999
.. date: 2019-08-30-10-48-53
.. nonce: QqsRRi
.. section: Library
All built-in functions now accept arguments of any type instead of just
``bool`` and ``int`` for boolean parameters.
..
.. date: 2022-12-02-17-08-08
.. gh-issue: 99931
.. nonce: wC46hE
.. section: Documentation
Use `sphinxext-opengraph <https://sphinxext-opengraph.readthedocs.io/>`__ to
generate `OpenGraph metadata <https://ogp.me/>`__.
..
.. date: 2022-11-26-21-43-05
.. gh-issue: 89682
.. nonce: DhKoTM
.. section: Documentation
Reworded docstring of the default ``__contains__`` to clarify that it
returns a :class:`bool`.
..
.. date: 2022-11-26-15-51-23
.. gh-issue: 88330
.. nonce: B_wFq8
.. section: Documentation
Improved the description of what a resource is in importlib.resources docs.
..
.. date: 2022-11-16-12-52-23
.. gh-issue: 92892
.. nonce: TS-P0j
.. section: Documentation
Document that calling variadic functions with ctypes requires special care
on macOS/arm64 (and possibly other platforms).
..
.. bpo: 41825
.. date: 2020-09-22-12-32-16
.. nonce: npcaCb
.. section: Documentation
Restructured the documentation for the :func:`os.wait* <os.wait>` family of
functions, and improved the docs for :func:`os.waitid` with more explanation
of the possible argument constants.
..
.. date: 2022-12-05-16-12-56
.. gh-issue: 99892
.. nonce: sz_eW8
.. section: Tests
Skip test_normalization() of test_unicodedata if it fails to download
NormalizationTest.txt file from pythontest.net. Patch by Victor Stinner.
..
.. date: 2022-12-01-18-55-18
.. gh-issue: 99934
.. nonce: Ox3Fqf
.. section: Tests
Correct test_marsh on (32 bit) x86: test_deterministic sets was failing.
..
.. date: 2022-11-23-18-32-16
.. gh-issue: 99741
.. nonce: q4R7NH
.. section: Tests
We've implemented multi-phase init (PEP 489/630/687) for the internal (for
testing) _xxsubinterpreters module.
..
.. date: 2022-11-21-19-21-30
.. gh-issue: 99659
.. nonce: 4gP0nm
.. section: Tests
Optional big memory tests in ``test_sqlite3`` now catch the correct
:exc:`sqlite.DataError` exception type in case of too large strings and/or
blobs passed.
..
.. date: 2022-11-19-13-34-28
.. gh-issue: 99593
.. nonce: 8ZfCkj
.. section: Tests
Cover the Unicode C API with tests.
..
.. date: 2022-08-22-15-49-14
.. gh-issue: 96002
.. nonce: 4UE9UE
.. section: Tests
Add functional test for Argument Clinic.
..
.. date: 2022-11-24-02-58-10
.. gh-issue: 99086
.. nonce: DV_4Br
.. section: Build
Fix ``-Wimplicit-int``, ``-Wstrict-prototypes``, and
``-Wimplicit-function-declaration`` compiler warnings in
:program:`configure` checks.
..
.. date: 2022-11-15-08-40-22
.. gh-issue: 99337
.. nonce: 5LoQDE
.. section: Build
Fix a compilation issue with GCC 12 on macOS.
..
.. date: 2022-11-09-14-42-48
.. gh-issue: 99289
.. nonce: X7wFE1
.. section: Build
Add a ``COMPILEALL_OPTS`` variable in Makefile to override :mod:`compileall`
options (default: ``-j0``) in ``make install``. Also merged the
``compileall`` commands into a single command building .pyc files for the
all optimization levels (0, 1, 2) at once. Patch by Victor Stinner.
..
.. date: 2022-11-03-08-10-49
.. gh-issue: 98872
.. nonce: gdsR8X
.. section: Build
Fix a possible fd leak in ``Programs/_freeze_module.c`` introduced in Python
3.11.
..
.. date: 2022-10-16-12-49-24
.. gh-issue: 88226
.. nonce: BsnQ4k
.. section: Build
Always define ``TARGET_*`` labels in ``Python/ceval.c``, even if
``USE_COMPUTED_GOTOS`` is disabled.  This allows breakpoints to be set at
those labels in (for instance) ``gdb``.
..
.. date: 2022-11-23-17-17-16
.. gh-issue: 99345
.. nonce: jOa3-f
.. section: Windows
Use faster initialization functions to detect install location for Windows
Store package
..
.. date: 2022-11-21-19-50-18
.. gh-issue: 98629
.. nonce: tMmB_B
.. section: Windows
Fix initialization of :data:`sys.version` and ``sys._git`` on Windows
..
.. date: 2022-11-16-19-03-21
.. gh-issue: 99442
.. nonce: 6Dgk3Q
.. section: Windows
Fix handling in :ref:`launcher` when ``argv[0]`` does not include a file
extension.
..
.. bpo: 40882
.. date: 2020-06-06-15-10-37
.. nonce: UvNbdj
.. section: Windows
Fix a memory leak in :class:`multiprocessing.shared_memory.SharedMemory` on
Windows.
..
.. date: 2022-11-25-09-23-20
.. gh-issue: 87235
.. nonce: SifjCD
.. section: macOS
On macOS ``python3 /dev/fd/9 9</path/to/script.py`` failed for any script
longer than a couple of bytes.
..
.. date: 2022-11-01-10-32-23
.. gh-issue: 98940
.. nonce: W3YzC_
.. section: macOS
Fix ``Mac/Extras.install.py`` file filter bug.
..
.. date: 2022-08-11-09-58-15
.. gh-issue: 64490
.. nonce: PjwhM4
.. section: Tools/Demos
Argument Clinic varargs bugfixes
* Fix out-of-bounds error in :c:func:`!_PyArg_UnpackKeywordsWithVararg`.
* Fix incorrect check which allowed more than one varargs in clinic.py.
* Fix miscalculation of ``noptargs`` in generated code.
* Do not generate ``noptargs`` when there is a vararg argument and no optional argument.
..
.. date: 2022-12-05-17-30-13
.. gh-issue: 98680
.. nonce: FiMCxZ
.. section: C API
``PyBUF_*`` constants were marked as part of Limited API of Python 3.11+.
These were available in 3.11.0 with :c:macro:`Py_LIMITED_API` defined for
3.11, and are necessary to use the buffer API.
..
.. date: 2022-11-20-09-52-50
.. gh-issue: 99612
.. nonce: eBHksg
.. section: C API
Fix :c:func:`PyUnicode_DecodeUTF8Stateful` for ASCII-only data:
``*consumed`` was not set.
..
.. date: 2022-11-02-16-51-24
.. gh-issue: 47146
.. nonce: dsYDtI
.. section: C API
The ``structmember.h`` header is deprecated. Its non-deprecated contents are
now available just by including ``Python.h``, with a ``Py_`` prefix added if
it was missing. (Deprecated contents are :c:macro:`T_OBJECT`,
:c:macro:`T_NONE`, and no-op flags.) Patch by Petr Viktorin, based on
earlier work by Alexander Belopolsky and Matthias Braun.

.. bpo: 29781
.. date: 2017-09-05-15-26-30
.. nonce: LwYtBP
.. release date: 2017-09-19
.. section: Security
SSLObject.version() now correctly returns None when handshake over BIO has
not been performed yet.
..
.. bpo: 29505
.. date: 2017-08-23-17-02-55
.. nonce: BL6Yt8
.. section: Security
Add fuzz tests for float(str), int(str), unicode(str); for oss-fuzz.
..
.. bpo: 30947
.. date: 2017-08-16-16-35-59
.. nonce: iNMmm4
.. section: Security
Upgrade libexpat embedded copy from version 2.2.1 to 2.2.3 to get security
fixes.
..
.. bpo: 30730
.. date: 0347
.. nonce: rJsyTH
.. original section: Library
.. section: Security
Prevent environment variables injection in subprocess on Windows.  Prevent
passing other environment variables and command arguments.
..
.. bpo: 30694
.. date: 0344
.. nonce: WkMWM_
.. original section: Library
.. section: Security
Upgrade expat copy from 2.2.0 to 2.2.1 to get fixes of multiple security
vulnerabilities including: :cve:`2017-9233` (External entity infinite loop
DoS), :cve:`2016-9063` (Integer overflow, re-fix), :cve:`2016-0718` (Fix
regression bugs from 2.2.0's fix to :cve:`2016-0718`) and :cve:`2012-0876`
(Counter hash flooding with SipHash). Note: the :cve:`2016-5300` (Use
os-specific entropy sources like getrandom) doesn't impact Python, since Python
already gets entropy from the OS to set the expat secret using
``XML_SetHashSalt()``.
..
.. bpo: 30500
.. date: 0342
.. nonce: 1VG7R-
.. original section: Library
.. section: Security
Fix urllib.parse.splithost() to correctly parse fragments. For example,
``splithost('//127.0.0.1#@evil.com/')`` now correctly returns the
``127.0.0.1`` host, instead of treating ``@evil.com`` as the host in an
authentication (``login@host``).
..
.. bpo: 29591
.. date: 0338
.. nonce: ExKblw
.. original section: Library
.. section: Security
Update expat copy from 2.1.1 to 2.2.0 to get fixes of :cve:`2016-0718` and
:cve:`2016-4472`. See https://sourceforge.net/p/expat/bugs/537/ for more
information.
..
.. bpo: 31490
.. date: 2017-09-16-13-32-35
.. nonce: r7m2sj
.. section: Core and Builtins
Fix an assertion failure in ``ctypes`` class definition, in case the class has
an attribute whose name is specified in ``_anonymous_`` but not in
``_fields_``. Patch by Oren Milman.
..
.. bpo: 31471
.. date: 2017-09-14-19-47-57
.. nonce: 0yiA5Q
.. section: Core and Builtins
Fix an assertion failure in ``subprocess.Popen()`` on Windows, in case the env
argument has a bad ``keys()`` method. Patch by Oren Milman.
..
.. bpo: 31418
.. date: 2017-09-13-13-03-52
.. nonce: rS-FlC
.. section: Core and Builtins
Fix an assertion failure in ``PyErr_WriteUnraisable()`` in case of an
exception with a bad ``__module__`` attribute. Patch by Oren Milman.
..
.. bpo: 31416
.. date: 2017-09-11-12-54-35
.. nonce: 2hlQFd
.. section: Core and Builtins
Fix assertion failures in case of a bad warnings.filters or
warnings.defaultaction. Patch by Oren Milman.
..
.. bpo: 28411
.. date: 2017-09-11-09-24-21
.. nonce: 12SpAm
.. section: Core and Builtins
Change direct usage of PyInterpreterState.modules to
PyImport_GetModuleDict(). Also introduce more uniformity in other code that
deals with sys.modules. This helps reduce complications when working on
sys.modules.
..
.. bpo: 28411
.. date: 2017-09-11-09-11-20
.. nonce: Ax91lz
.. section: Core and Builtins
Switch to the abstract API when dealing with ``PyInterpreterState.modules``.
This allows later support for all dict subclasses and other Mapping
implementations.  Also add a ``PyImport_GetModule()`` function to reduce a
bunch of duplicated code.
..
.. bpo: 31411
.. date: 2017-09-11-08-50-41
.. nonce: HZz82I
.. section: Core and Builtins
Raise a TypeError instead of SystemError in case warnings.onceregistry is
not a dictionary. Patch by Oren Milman.
..
.. bpo: 31344
.. date: 2017-09-06-20-25-47
.. nonce: XpFs-q
.. section: Core and Builtins
For finer control of tracing behaviour when testing the interpreter, two new
frame attributes have been added to control the emission of particular trace
events: ``f_trace_lines`` (``True`` by default) to turn off per-line trace
events; and ``f_trace_opcodes`` (``False`` by default) to turn on per-opcode
trace events.
..
.. bpo: 31373
.. date: 2017-09-06-15-25-59
.. nonce: dC4jd4
.. section: Core and Builtins
Fix several possible instances of undefined behavior due to floating-point
demotions.
..
.. bpo: 30465
.. date: 2017-09-06-10-47-29
.. nonce: oe-3GD
.. section: Core and Builtins
Location information (``lineno`` and ``col_offset``) in f-strings is now
(mostly) correct.  This fixes tools like flake8 from showing warnings on the
wrong line (typically the first line of the file).
..
.. bpo: 30860
.. date: 2017-09-05-13-47-49
.. nonce: MROpZw
.. section: Core and Builtins
Consolidate CPython's global runtime state under a single struct.  This
improves discoverability of the runtime state.
..
.. bpo: 31347
.. date: 2017-09-04-16-35-06
.. nonce: KDuf2w
.. section: Core and Builtins
Fix possible undefined behavior in _PyObject_FastCall_Prepend.
..
.. bpo: 31343
.. date: 2017-09-04-14-57-27
.. nonce: Kl_fS5
.. section: Core and Builtins
Include sys/sysmacros.h for major(), minor(), and makedev(). GNU C library
plans to remove the functions from sys/types.h.
..
.. bpo: 31291
.. date: 2017-08-28-11-51-29
.. nonce: t8QggK
.. section: Core and Builtins
Fix an assertion failure in ``zipimport.zipimporter.get_data`` on Windows,
when the return value of ``pathname.replace('/','\\')`` isn't a string.
Patch by Oren Milman.
..
.. bpo: 31271
.. date: 2017-08-25-20-43-22
.. nonce: YMduKF
.. section: Core and Builtins
Fix an assertion failure in the ``write()`` method of ``io.TextIOWrapper``, when
the encoder doesn't return a bytes object. Patch by Oren Milman.
..
.. bpo: 31243
.. date: 2017-08-24-13-34-49
.. nonce: dRJzqR
.. section: Core and Builtins
Fix a crash in some methods of ``io.TextIOWrapper``, when the decoder's state
is invalid. Patch by Oren Milman.
..
.. bpo: 30721
.. date: 2017-08-18-15-15-20
.. nonce: Hmc56z
.. section: Core and Builtins
``print`` now shows correct usage hint for using Python 2 redirection
syntax.  Patch by Sanyam Khurana.
..
.. bpo: 31070
.. date: 2017-08-09-09-40-54
.. nonce: oDyLiI
.. section: Core and Builtins
Fix a race condition in importlib _get_module_lock().
..
.. bpo: 30747
.. date: 2017-08-08-12-00-29
.. nonce: g2kZRT
.. section: Core and Builtins
Add a non-dummy implementation of _Py_atomic_store and _Py_atomic_load on
MSVC.
..
.. bpo: 31095
.. date: 2017-08-01-18-48-30
.. nonce: bXWZDb
.. section: Core and Builtins
Fix potential crash during GC caused by ``tp_dealloc`` which doesn't call
``PyObject_GC_UnTrack()``.
..
.. bpo: 31071
.. date: 2017-07-31-13-28-53
.. nonce: P9UBDy
.. section: Core and Builtins
Avoid masking original TypeError in call with * unpacking when other
arguments are passed.
..
.. bpo: 30978
.. date: 2017-07-21-07-39-05
.. nonce: f0jODc
.. section: Core and Builtins
str.format_map() now passes key lookup exceptions through. Previously any
exception was replaced with a KeyError exception.
..
.. bpo: 30808
.. date: 2017-07-17-12-12-59
.. nonce: bA3zOv
.. section: Core and Builtins
Use _Py_atomic API for concurrency-sensitive signal state.
..
.. bpo: 30876
.. date: 2017-07-11-06-31-32
.. nonce: x35jZX
.. section: Core and Builtins
Relative import from unloaded package now reimports the package instead of
failing with SystemError.  Relative import from non-package now fails with
ImportError rather than SystemError.
..
.. bpo: 30703
.. date: 2017-06-28-21-07-32
.. nonce: ULCdFp
.. section: Core and Builtins
Improve signal delivery.
Avoid using Py_AddPendingCall from signal handler, to avoid calling
signal-unsafe functions. The tests I'm adding here fail without the rest of the
patch, on Linux and OS X. This means our signal delivery logic had defects
(some signals could be lost).
..
.. bpo: 30765
.. date: 2017-06-26-14-29-50
.. nonce: Q5iBmf
.. section: Core and Builtins
Avoid blocking in pthread_mutex_lock() when PyThread_acquire_lock() is asked
not to block.
..
.. bpo: 31161
.. date: 0470
.. nonce: FcUAA0
.. section: Core and Builtins
Make sure the 'Missing parentheses' syntax error message is only applied to
SyntaxError, not to subclasses. Patch by Martijn Pieters.
..
.. bpo: 30814
.. date: 0469
.. nonce: HcYsfM
.. section: Core and Builtins
Fixed a race condition when import a submodule from a package.
..
.. bpo: 30736
.. date: 0468
.. nonce: kA4J9v
.. section: Core and Builtins
The internal unicodedata database has been upgraded to Unicode 10.0.
..
.. bpo: 30604
.. date: 0467
.. nonce: zGPGoX
.. section: Core and Builtins
Move co_extra_freefuncs from per-thread to per-interpreter to avoid crashes.
..
.. bpo: 30597
.. date: 0466
.. nonce: 7erHiP
.. section: Core and Builtins
``print`` now shows expected input in custom error message when used as a
Python 2 statement. Patch by Sanyam Khurana.
..
.. bpo: 30682
.. date: 0465
.. nonce: zZm88E
.. section: Core and Builtins
Removed a too-strict assertion that failed for certain f-strings, such as
eval("f'\\\n'") and eval("f'\\\r'").
..
.. bpo: 30501
.. date: 0464
.. nonce: BWJByG
.. section: Core and Builtins
The compiler now produces more optimal code for complex condition
expressions in the "if", "while" and "assert" statement, the "if"
expression, and generator expressions and comprehensions.
..
.. bpo: 28180
.. date: 0463
.. nonce: f_IHor
.. section: Core and Builtins
Implement :pep:`538` (legacy C locale coercion). This means that when a
suitable coercion target locale is available, both the core interpreter and
locale-aware C extensions will assume the use of UTF-8 as the default text
encoding, rather than ASCII.
..
.. bpo: 30486
.. date: 0462
.. nonce: KZi3nB
.. section: Core and Builtins
Allows setting cell values for __closure__. Patch by Lisa Roach.
..
.. bpo: 30537
.. date: 0461
.. nonce: sGC27r
.. section: Core and Builtins
itertools.islice now accepts integer-like objects (having an __index__
method) as start, stop, and slice arguments
..
.. bpo: 25324
.. date: 0460
.. nonce: l12VjO
.. section: Core and Builtins
Tokens needed for parsing in Python moved to C. ``COMMENT``, ``NL`` and
``ENCODING``. This way the tokens and tok_names in the token module don't
get changed when you import the tokenize module.
..
.. bpo: 29104
.. date: 0459
.. nonce: u26yCx
.. section: Core and Builtins
Fixed parsing backslashes in f-strings.
..
.. bpo: 27945
.. date: 0458
.. nonce: p29r3O
.. section: Core and Builtins
Fixed various segfaults with dict when input collections are mutated during
searching, inserting or comparing.  Based on patches by Duane Griffin and
Tim Mitchell.
..
.. bpo: 25794
.. date: 0457
.. nonce: xfPwqm
.. section: Core and Builtins
Fixed type.__setattr__() and type.__delattr__() for non-interned attribute
names.  Based on patch by Eryk Sun.
..
.. bpo: 30039
.. date: 0456
.. nonce: e0u4DG
.. section: Core and Builtins
If a KeyboardInterrupt happens when the interpreter is in the middle of
resuming a chain of nested 'yield from' or 'await' calls, it's now correctly
delivered to the innermost frame.
..
.. bpo: 28974
.. date: 0455
.. nonce: jVewS0
.. section: Core and Builtins
``object.__format__(x, '')`` is now equivalent to ``str(x)`` rather than
``format(str(self), '')``.
..
.. bpo: 30024
.. date: 0454
.. nonce: kSOlED
.. section: Core and Builtins
Circular imports involving absolute imports with binding a submodule to a
name are now supported.
..
.. bpo: 12414
.. date: 0453
.. nonce: T9ix8O
.. section: Core and Builtins
sys.getsizeof() on a code object now returns the sizes which includes the
code struct and sizes of objects which it references. Patch by Donghee Na.
..
.. bpo: 29839
.. date: 0452
.. nonce: rUmfay
.. section: Core and Builtins
len() now raises ValueError rather than OverflowError if __len__() returned
a large negative integer.
..
.. bpo: 11913
.. date: 0451
.. nonce: 5uiMX9
.. section: Core and Builtins
README.rst is now included in the list of distutils standard READMEs and
therefore included in source distributions.
..
.. bpo: 29914
.. date: 0450
.. nonce: nqFSRR
.. section: Core and Builtins
Fixed default implementations of __reduce__ and __reduce_ex__().
object.__reduce__() no longer takes arguments, object.__reduce_ex__() now
requires one argument.
..
.. bpo: 29949
.. date: 0449
.. nonce: DevGPS
.. section: Core and Builtins
Fix memory usage regression of set and frozenset object.
..
.. bpo: 29935
.. date: 0448
.. nonce: vgjdJo
.. section: Core and Builtins
Fixed error messages in the index() method of tuple, list and deque when
pass indices of wrong type.
..
.. bpo: 29816
.. date: 0447
.. nonce: 0H75Nl
.. section: Core and Builtins
Shift operation now has less opportunity to raise OverflowError. ValueError
always is raised rather than OverflowError for negative counts. Shifting
zero with non-negative count always returns zero.
..
.. bpo: 24821
.. date: 0446
.. nonce: 4DINGV
.. section: Core and Builtins
Fixed the slowing down to 25 times in the searching of some unlucky Unicode
characters.
..
.. bpo: 29102
.. date: 0445
.. nonce: AW4YPj
.. section: Core and Builtins
Add a unique ID to PyInterpreterState.  This makes it easier to identify
each subinterpreter.
..
.. bpo: 29894
.. date: 0444
.. nonce: Vev6t-
.. section: Core and Builtins
The deprecation warning is emitted if __complex__ returns an instance of a
strict subclass of complex.  In a future versions of Python this can be an
error.
..
.. bpo: 29859
.. date: 0443
.. nonce: Z1MLcA
.. section: Core and Builtins
Show correct error messages when any of the pthread_* calls in
thread_pthread.h fails.
..
.. bpo: 29849
.. date: 0442
.. nonce: hafvBD
.. section: Core and Builtins
Fix a memory leak when an ImportError is raised during from import.
..
.. bpo: 28856
.. date: 0441
.. nonce: AFRmo4
.. section: Core and Builtins
Fix an oversight that %b format for bytes should support objects follow the
buffer protocol.
..
.. bpo: 29723
.. date: 0440
.. nonce: M5omgP
.. section: Core and Builtins
The ``sys.path[0]`` initialization change for bpo-29139 caused a regression
by revealing an inconsistency in how sys.path is initialized when executing
``__main__`` from a zipfile, directory, or other import location. The
interpreter now consistently avoids ever adding the import location's parent
directory to ``sys.path``, and ensures no other ``sys.path`` entries are
inadvertently modified when inserting the import location named on the
command line.
..
.. bpo: 29568
.. date: 0439
.. nonce: 3EtOC-
.. section: Core and Builtins
Escaped percent "%%" in the format string for classic string formatting no
longer allows any characters between two percents.
..
.. bpo: 29714
.. date: 0438
.. nonce: z-BhVd
.. section: Core and Builtins
Fix a regression that bytes format may fail when containing zero bytes
inside.
..
.. bpo: 29695
.. date: 0437
.. nonce: z75xXa
.. section: Core and Builtins
bool(), float(), list() and tuple() no longer take keyword arguments. The
first argument of int() can now be passes only as positional argument.
..
.. bpo: 28893
.. date: 0436
.. nonce: WTKnpj
.. section: Core and Builtins
Set correct __cause__ for errors about invalid awaitables returned from
__aiter__ and __anext__.
..
.. bpo: 28876
.. date: 0435
.. nonce: cU-sGT
.. section: Core and Builtins
``bool(range)`` works even if ``len(range)`` raises :exc:`OverflowError`.
..
.. bpo: 29683
.. date: 0434
.. nonce: G5iS-P
.. section: Core and Builtins
Fixes to memory allocation in _PyCode_SetExtra.  Patch by Brian Coleman.
..
.. bpo: 29684
.. date: 0433
.. nonce: wTgEoh
.. section: Core and Builtins
Fix minor regression of PyEval_CallObjectWithKeywords. It should raise
TypeError when kwargs is not a dict.  But it might cause segv when args=NULL
and kwargs is not a dict.
..
.. bpo: 28598
.. date: 0432
.. nonce: QxbzQn
.. section: Core and Builtins
Support __rmod__ for subclasses of str being called before str.__mod__.
Patch by Martijn Pieters.
..
.. bpo: 29607
.. date: 0431
.. nonce: 7NvBA1
.. section: Core and Builtins
Fix stack_effect computation for CALL_FUNCTION_EX. Patch by Matthieu
Dartiailh.
..
.. bpo: 29602
.. date: 0430
.. nonce: qyyskC
.. section: Core and Builtins
Fix incorrect handling of signed zeros in complex constructor for complex
subclasses and for inputs having a __complex__ method. Patch by Serhiy
Storchaka.
..
.. bpo: 29347
.. date: 0429
.. nonce: 1RPPGN
.. section: Core and Builtins
Fixed possibly dereferencing undefined pointers when creating weakref
objects.
..
.. bpo: 29463
.. date: 0428
.. nonce: h2bg8A
.. section: Core and Builtins
Add ``docstring`` field to Module, ClassDef, FunctionDef, and
AsyncFunctionDef ast nodes.  docstring is not first stmt in their body
anymore.  It affects ``co_firstlineno`` and ``co_lnotab`` of code object for
module and class. (Reverted in :issue:`32911`.)
..
.. bpo: 29438
.. date: 0427
.. nonce: IKxD6I
.. section: Core and Builtins
Fixed use-after-free problem in key sharing dict.
..
.. bpo: 29546
.. date: 0426
.. nonce: PS1I1T
.. section: Core and Builtins
Set the 'path' and 'name' attribute on ImportError for ``from ... import
...``.
..
.. bpo: 29546
.. date: 0425
.. nonce: O1rmG_
.. section: Core and Builtins
Improve from-import error message with location
..
.. bpo: 29478
.. date: 0424
.. nonce: rTQ-qy
.. section: Core and Builtins
If max_line_length=None is specified while using the Compat32 policy, it is
no longer ignored.  Patch by Mircea Cosbuc.
..
.. bpo: 29319
.. date: 0423
.. nonce: KLDUZf
.. section: Core and Builtins
Prevent RunMainFromImporter overwriting sys.path[0].
..
.. bpo: 29337
.. date: 0422
.. nonce: bjX8AE
.. section: Core and Builtins
Fixed possible BytesWarning when compare the code objects. Warnings could be
emitted at compile time.
..
.. bpo: 29327
.. date: 0421
.. nonce: XXQarW
.. section: Core and Builtins
Fixed a crash when pass the iterable keyword argument to sorted().
..
.. bpo: 29034
.. date: 0420
.. nonce: 7-uEDT
.. section: Core and Builtins
Fix memory leak and use-after-free in os module (path_converter).
..
.. bpo: 29159
.. date: 0419
.. nonce: gEn_kP
.. section: Core and Builtins
Fix regression in bytes(x) when x.__index__() raises Exception.
..
.. bpo: 29049
.. date: 0418
.. nonce: KpVXBw
.. section: Core and Builtins
Call _PyObject_GC_TRACK() lazily when calling Python function. Calling
function is up to 5% faster.
..
.. bpo: 28927
.. date: 0417
.. nonce: 9fxf6y
.. section: Core and Builtins
bytes.fromhex() and bytearray.fromhex() now ignore all ASCII whitespace, not
only spaces.  Patch by Robert Xiao.
..
.. bpo: 28932
.. date: 0416
.. nonce: QnLx8A
.. section: Core and Builtins
Do not include <sys/random.h> if it does not exist.
..
.. bpo: 25677
.. date: 0415
.. nonce: RWhZrb
.. section: Core and Builtins
Correct the positioning of the syntax error caret for indented blocks. Based
on patch by Michael Layzell.
..
.. bpo: 29000
.. date: 0414
.. nonce: K6wQ-3
.. section: Core and Builtins
Fixed bytes formatting of octals with zero padding in alternate form.
..
.. bpo: 18896
.. date: 0413
.. nonce: Pqe0bg
.. section: Core and Builtins
Python function can now have more than 255 parameters.
collections.namedtuple() now supports tuples with more than 255 elements.
..
.. bpo: 28596
.. date: 0412
.. nonce: snIJRd
.. section: Core and Builtins
The preferred encoding is UTF-8 on Android. Patch written by Chi Hsuan Yen.
..
.. bpo: 22257
.. date: 0411
.. nonce: 2a8zxB
.. section: Core and Builtins
Clean up interpreter startup (see :pep:`432`).
..
.. bpo: 26919
.. date: 0410
.. nonce: Cm7MSa
.. section: Core and Builtins
On Android, operating system data is now always encoded/decoded to/from
UTF-8, instead of the locale encoding to avoid inconsistencies with
os.fsencode() and os.fsdecode() which are already using UTF-8.
..
.. bpo: 28991
.. date: 0409
.. nonce: lGA0FK
.. section: Core and Builtins
functools.lru_cache() was susceptible to an obscure reentrancy bug
triggerable by a monkey-patched len() function.
..
.. bpo: 28147
.. date: 0408
.. nonce: CnK_xf
.. section: Core and Builtins
Fix a memory leak in split-table dictionaries: setattr() must not convert
combined table into split table. Patch written by INADA Naoki.
..
.. bpo: 28739
.. date: 0407
.. nonce: w1fvhk
.. section: Core and Builtins
f-string expressions are no longer accepted as docstrings and by
ast.literal_eval() even if they do not include expressions.
..
.. bpo: 28512
.. date: 0406
.. nonce: i-pv6d
.. section: Core and Builtins
Fixed setting the offset attribute of SyntaxError by
PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject().
..
.. bpo: 28918
.. date: 0405
.. nonce: SFVuPz
.. section: Core and Builtins
Fix the cross compilation of xxlimited when Python has been built with
Py_DEBUG defined.
..
.. bpo: 23722
.. date: 0404
.. nonce: e8BH5h
.. section: Core and Builtins
Rather than silently producing a class that doesn't support zero-argument
``super()`` in methods, failing to pass the new ``__classcell__`` namespace
entry up to ``type.__new__`` now results in a ``DeprecationWarning`` and a
class that supports zero-argument ``super()``.
..
.. bpo: 28797
.. date: 0403
.. nonce: _A0_Z5
.. section: Core and Builtins
Modifying the class __dict__ inside the __set_name__ method of a descriptor
that is used inside that class no longer prevents calling the __set_name__
method of other descriptors.
..
.. bpo: 28799
.. date: 0402
.. nonce: cP6V1N
.. section: Core and Builtins
Remove the ``PyEval_GetCallStats()`` function and deprecate the untested and
undocumented ``sys.callstats()`` function. Remove the ``CALL_PROFILE``
special build: use the :func:`sys.setprofile` function, :mod:`!cProfile` or
:mod:`!profile` to profile function calls.
..
.. bpo: 12844
.. date: 0401
.. nonce: pdr3gY
.. section: Core and Builtins
More than 255 arguments can now be passed to a function.
..
.. bpo: 28782
.. date: 0400
.. nonce: foJV_E
.. section: Core and Builtins
Fix a bug in the implementation ``yield from`` when checking if the next
instruction is YIELD_FROM. Regression introduced by WORDCODE (issue #26647).
..
.. bpo: 28774
.. date: 0399
.. nonce: cEehAr
.. section: Core and Builtins
Fix error position of the unicode error in ASCII and Latin1 encoders when a
string returned by the error handler contains multiple non-encodable
characters (non-ASCII for the ASCII codec, characters out of the
U+0000-U+00FF range for Latin1).
..
.. bpo: 28731
.. date: 0398
.. nonce: oNF59u
.. section: Core and Builtins
Optimize _PyDict_NewPresized() to create correct size dict. Improve speed of
dict literal with constant keys up to 30%.
..
.. bpo: 28532
.. date: 0397
.. nonce: KEYJny
.. section: Core and Builtins
Show sys.version when -V option is supplied twice.
..
.. bpo: 27100
.. date: 0396
.. nonce: poVjXq
.. section: Core and Builtins
The with-statement now checks for __enter__ before it checks for __exit__.
This gives less confusing error messages when both methods are missing.
Patch by Jonathan Ellington.
..
.. bpo: 28746
.. date: 0395
.. nonce: r5MXdB
.. section: Core and Builtins
Fix the set_inheritable() file descriptor method on platforms that do not
have the ioctl FIOCLEX and FIONCLEX commands.
..
.. bpo: 26920
.. date: 0394
.. nonce: 1URwGb
.. section: Core and Builtins
Fix not getting the locale's charset upon initializing the interpreter, on
platforms that do not have langinfo.
..
.. bpo: 28648
.. date: 0393
.. nonce: z7B52W
.. section: Core and Builtins
Fixed crash in Py_DecodeLocale() in debug build on Mac OS X when decode
astral characters.  Patch by Xiang Zhang.
..
.. bpo: 28665
.. date: 0392
.. nonce: v4nx86
.. section: Core and Builtins
Improve speed of the STORE_DEREF opcode by 40%.
..
.. bpo: 19398
.. date: 0391
.. nonce: RYbEGH
.. section: Core and Builtins
Extra slash no longer added to sys.path components in case of empty
compile-time PYTHONPATH components.
..
.. bpo: 28621
.. date: 0390
.. nonce: eCD7n-
.. section: Core and Builtins
Sped up converting int to float by reusing faster bits counting
implementation.  Patch by Adrian Wielgosik.
..
.. bpo: 28580
.. date: 0389
.. nonce: 8bqBmG
.. section: Core and Builtins
Optimize iterating split table values. Patch by Xiang Zhang.
..
.. bpo: 28583
.. date: 0388
.. nonce: F-QAx1
.. section: Core and Builtins
PyDict_SetDefault didn't combine split table when needed. Patch by Xiang
Zhang.
..
.. bpo: 28128
.. date: 0387
.. nonce: Lc2sFu
.. section: Core and Builtins
Deprecation warning for invalid str and byte escape sequences now prints
better information about where the error occurs. Patch by Serhiy Storchaka
and Eric Smith.
..
.. bpo: 28509
.. date: 0386
.. nonce: _Fa4Uq
.. section: Core and Builtins
dict.update() no longer allocate unnecessary large memory.
..
.. bpo: 28426
.. date: 0385
.. nonce: E_quyK
.. section: Core and Builtins
Fixed potential crash in PyUnicode_AsDecodedObject() in debug build.
..
.. bpo: 28517
.. date: 0384
.. nonce: ExPkm9
.. section: Core and Builtins
Fixed of-by-one error in the peephole optimizer that caused keeping
unreachable code.
..
.. bpo: 28214
.. date: 0383
.. nonce: 6ECJox
.. section: Core and Builtins
Improved exception reporting for problematic __set_name__ attributes.
..
.. bpo: 23782
.. date: 0382
.. nonce: lonDzj
.. section: Core and Builtins
Fixed possible memory leak in _PyTraceback_Add() and exception loss in
PyTraceBack_Here().
..
.. bpo: 28183
.. date: 0381
.. nonce: MJZeNd
.. section: Core and Builtins
Optimize and cleanup dict iteration.
..
.. bpo: 26081
.. date: 0380
.. nonce: _x5vjl
.. section: Core and Builtins
Added C implementation of asyncio.Future. Original patch by Yury Selivanov.
..
.. bpo: 28379
.. date: 0379
.. nonce: DuXlco
.. section: Core and Builtins
Added sanity checks and tests for PyUnicode_CopyCharacters(). Patch by Xiang
Zhang.
..
.. bpo: 28376
.. date: 0378
.. nonce: oPD-5D
.. section: Core and Builtins
The type of long range iterator is now registered as Iterator. Patch by Oren
Milman.
..
.. bpo: 28376
.. date: 0377
.. nonce: yTEhEo
.. section: Core and Builtins
Creating instances of range_iterator by calling range_iterator type now is
disallowed.  Calling iter() on range instance is the only way. Patch by Oren
Milman.
..
.. bpo: 26906
.. date: 0376
.. nonce: YBjcwI
.. section: Core and Builtins
Resolving special methods of uninitialized type now causes implicit
initialization of the type instead of a fail.
..
.. bpo: 18287
.. date: 0375
.. nonce: k6jffS
.. section: Core and Builtins
PyType_Ready() now checks that tp_name is not NULL. Original patch by Niklas
Koep.
..
.. bpo: 24098
.. date: 0374
.. nonce: XqlP_1
.. section: Core and Builtins
Fixed possible crash when AST is changed in process of compiling it.
..
.. bpo: 28201
.. date: 0373
.. nonce: GWUxAy
.. section: Core and Builtins
Dict reduces possibility of 2nd conflict in hash table when hashes have same
lower bits.
..
.. bpo: 28350
.. date: 0372
.. nonce: 8M5Eg9
.. section: Core and Builtins
String constants with null character no longer interned.
..
.. bpo: 26617
.. date: 0371
.. nonce: Gh5LvN
.. section: Core and Builtins
Fix crash when GC runs during weakref callbacks.
..
.. bpo: 27942
.. date: 0370
.. nonce: ZGuhns
.. section: Core and Builtins
String constants now interned recursively in tuples and frozensets.
..
.. bpo: 28289
.. date: 0369
.. nonce: l1kHlV
.. section: Core and Builtins
ImportError.__init__ now resets not specified attributes.
..
.. bpo: 21578
.. date: 0368
.. nonce: GI1bhj
.. section: Core and Builtins
Fixed misleading error message when ImportError called with invalid keyword
args.
..
.. bpo: 28203
.. date: 0367
.. nonce: LRn5vp
.. section: Core and Builtins
Fix incorrect type in complex(1.0, {2:3}) error message. Patch by Soumya
Sharma.
..
.. bpo: 28086
.. date: 0366
.. nonce: JsQPMQ
.. section: Core and Builtins
Single var-positional argument of tuple subtype was passed unscathed to the
C-defined function.  Now it is converted to exact tuple.
..
.. bpo: 28214
.. date: 0365
.. nonce: zQF8Em
.. section: Core and Builtins
Now __set_name__ is looked up on the class instead of the instance.
..
.. bpo: 27955
.. date: 0364
.. nonce: HC4pZ4
.. section: Core and Builtins
Fallback on reading /dev/urandom device when the getrandom() syscall fails
with EPERM, for example when blocked by SECCOMP.
..
.. bpo: 28192
.. date: 0363
.. nonce: eR6stU
.. section: Core and Builtins
Don't import readline in isolated mode.
..
.. bpo: 27441
.. date: 0362
.. nonce: scPKax
.. section: Core and Builtins
Remove some redundant assignments to ob_size in longobject.c. Thanks Oren
Milman.
..
.. bpo: 27222
.. date: 0361
.. nonce: 74PvFk
.. section: Core and Builtins
Clean up redundant code in long_rshift function. Thanks Oren Milman.
..
.. bpo: 0
.. date: 0360
.. nonce: 9EbOiD
.. section: Core and Builtins
Upgrade internal unicode databases to Unicode version 9.0.0.
..
.. bpo: 28131
.. date: 0359
.. nonce: owq0wW
.. section: Core and Builtins
Fix a regression in zipimport's compile_source().  zipimport should use the
same optimization level as the interpreter.
..
.. bpo: 28126
.. date: 0358
.. nonce: Qf6-uQ
.. section: Core and Builtins
Replace Py_MEMCPY with memcpy(). Visual Studio can properly optimize
memcpy().
..
.. bpo: 28120
.. date: 0357
.. nonce: e5xc1i
.. section: Core and Builtins
Fix dict.pop() for split dictionary when trying to remove a "pending key"
(Not yet inserted in split-table). Patch by Xiang Zhang.
..
.. bpo: 26182
.. date: 0356
.. nonce: jYlqTO
.. section: Core and Builtins
Raise DeprecationWarning when async and await keywords are used as
variable/attribute/class/function name.
..
.. bpo: 26182
.. date: 0355
.. nonce: a8JXK2
.. section: Core and Builtins
Fix a refleak in code that raises DeprecationWarning.
..
.. bpo: 28721
.. date: 0354
.. nonce: BO9BUF
.. section: Core and Builtins
Fix asynchronous generators aclose() and athrow() to handle
StopAsyncIteration propagation properly.
..
.. bpo: 26110
.. date: 0353
.. nonce: KRaID6
.. section: Core and Builtins
Speed-up method calls: add LOAD_METHOD and CALL_METHOD opcodes.
..
.. bpo: 31499
.. date: 2017-09-18-10-57-04
.. nonce: BydYhf
.. section: Library
xml.etree: Fix a crash when a parser is part of a reference cycle.
..
.. bpo: 31482
.. date: 2017-09-16-01-53-11
.. nonce: 39s5dS
.. section: Library
``random.seed()`` now works with bytes in version=1
..
.. bpo: 28556
.. date: 2017-09-14-11-02-56
.. nonce: EUOiYs
.. section: Library
typing.get_type_hints now finds the right globalns for classes and modules
by default (when no ``globalns`` was specified by the caller).
..
.. bpo: 28556
.. date: 2017-09-13-23-27-39
.. nonce: UmTQvv
.. section: Library
Speed improvements to the ``typing`` module.  Original PRs by Ivan
Levkivskyi and Mitar.
..
.. bpo: 31544
.. date: 2017-09-13-19-55-35
.. nonce: beTh6t
.. section: Library
The C accelerator module of ElementTree ignored exceptions raised when
looking up TreeBuilder target methods in XMLParser().
..
.. bpo: 31234
.. date: 2017-09-13-18-05-56
.. nonce: lGkcPg
.. section: Library
socket.create_connection() now fixes manually a reference cycle: clear the
variable storing the last exception on success.
..
.. bpo: 31457
.. date: 2017-09-13-13-33-39
.. nonce: bIVBtI
.. section: Library
LoggerAdapter objects can now be nested.
..
.. bpo: 31431
.. date: 2017-09-13-07-37-20
.. nonce: dj994R
.. section: Library
SSLContext.check_hostname now automatically sets SSLContext.verify_mode to
ssl.CERT_REQUIRED instead of failing with a ValueError.
..
.. bpo: 31233
.. date: 2017-09-13-02-17-11
.. nonce: r-IPIu
.. section: Library
socketserver.ThreadingMixIn now keeps a list of non-daemonic threads to wait
until all these threads complete in server_close().
..
.. bpo: 28638
.. date: 2017-09-08-14-31-15
.. nonce: lfbVyH
.. section: Library
Changed the implementation strategy for collections.namedtuple() to
substantially reduce the use of exec() in favor of precomputed methods. As a
result, the *verbose* parameter and *_source* attribute are no longer
supported.  The benefits include 1) having a smaller memory footprint for
applications using multiple named tuples, 2) faster creation of the named
tuple class (approx 4x to 6x depending on how it is measured), and 3) minor
speed-ups for instance creation using __new__, _make, and _replace.  (The
primary patch contributor is Jelle Zijlstra with further improvements by
INADA Naoki, Serhiy Storchaka, and Raymond Hettinger.)
..
.. bpo: 31400
.. date: 2017-09-08-14-19-57
.. nonce: YOTPKi
.. section: Library
Improves SSL error handling to avoid losing error numbers.
..
.. bpo: 27629
.. date: 2017-09-07-12-15-56
.. nonce: 7xJXEy
.. section: Library
Make return types of SSLContext.wrap_bio() and SSLContext.wrap_socket()
customizable.
..
.. bpo: 28958
.. date: 2017-09-06-19-41-01
.. nonce: x4-K5F
.. section: Library
ssl.SSLContext() now uses OpenSSL error information when a context cannot be
instantiated.
..
.. bpo: 28182
.. date: 2017-09-06-18-49-16
.. nonce: hRP8Bk
.. section: Library
The SSL module now raises SSLCertVerificationError when OpenSSL fails to
verify the peer's certificate. The exception contains more information about
the error.
..
.. bpo: 27340
.. date: 2017-09-06-06-50-41
.. nonce: GgekV5
.. section: Library
SSLSocket.sendall() now uses memoryview to create slices of data. This fixes
support for all bytes-like object. It is also more efficient and avoids
costly copies.
..
.. bpo: 14191
.. date: 2017-09-05-17-43-00
.. nonce: vhh2xx
.. section: Library
A new function ``argparse.ArgumentParser.parse_intermixed_args`` provides
the ability to parse command lines where there user intermixes options and
positional arguments.
..
.. bpo: 31178
.. date: 2017-09-05-14-55-28
.. nonce: JrSFo7
.. section: Library
Fix string concatenation bug in rare error path in the subprocess module
..
.. bpo: 31350
.. date: 2017-09-05-10-30-48
.. nonce: dXJ-7N
.. section: Library
Micro-optimize :func:`asyncio._get_running_loop` to become up to 10% faster.
..
.. bpo: 31170
.. date: 2017-09-04-23-41-35
.. nonce: QGmJ1t
.. section: Library
expat: Update libexpat from 2.2.3 to 2.2.4. Fix copying of partial
characters for UTF-8 input (libexpat bug 115):
https://github.com/libexpat/libexpat/issues/115
..
.. bpo: 29136
.. date: 2017-09-04-16-39-49
.. nonce: vSn1oR
.. section: Library
Add TLS 1.3 cipher suites and OP_NO_TLSv1_3.
..
.. bpo: 1198569
.. date: 2017-09-04-10-53-06
.. nonce: vhh2nY
.. section: Library
``string.Template`` subclasses can optionally define ``braceidpattern`` if
they want to specify different placeholder patterns inside and outside the
braces.  If None (the default) it falls back to ``idpattern``.
..
.. bpo: 31326
.. date: 2017-09-01-18-48-06
.. nonce: TB05tV
.. section: Library
concurrent.futures.ProcessPoolExecutor.shutdown() now explicitly closes the
call queue. Moreover, shutdown(wait=True) now also join the call queue
thread, to prevent leaking a dangling thread.
..
.. bpo: 27144
.. date: 2017-08-30-11-26-14
.. nonce: PEDJsE
.. section: Library
The ``map()`` and ``as_completed()`` iterators in ``concurrent.futures`` now
avoid keeping a reference to yielded objects.
..
.. bpo: 31281
.. date: 2017-08-29-07-14-14
.. nonce: DcFyNs
.. section: Library
Fix ``fileinput.FileInput(files, inplace=True)`` when ``files`` contain
``pathlib.Path`` objects.
..
.. bpo: 10746
.. date: 2017-08-28-13-01-05
.. nonce: nmAvfu
.. section: Library
Fix ctypes producing wrong :pep:`3118` type codes for integer types.
..
.. bpo: 27584
.. date: 2017-08-24-14-03-14
.. nonce: r11JHZ
.. section: Library
``AF_VSOCK`` has been added to the socket interface which allows
communication between virtual machines and their host.
..
.. bpo: 22536
.. date: 2017-08-23
.. nonce: _narf_
.. section: Library
The subprocess module now sets the filename when FileNotFoundError is raised
on POSIX systems due to the executable or cwd not being found.
..
.. bpo: 29741
.. date: 2017-08-23-00-31-32
.. nonce: EBn_DM
.. section: Library
Update some methods in the _pyio module to also accept integer types. Patch
by Oren Milman.
..
.. bpo: 31249
.. date: 2017-08-22-12-44-48
.. nonce: STPbb9
.. section: Library
concurrent.futures: WorkItem.run() used by ThreadPoolExecutor now breaks a
reference cycle between an exception object and the WorkItem object.
..
.. bpo: 31247
.. date: 2017-08-21-17-50-27
.. nonce: 8S3zJp
.. section: Library
xmlrpc.server now explicitly breaks reference cycles when using
sys.exc_info() in code handling exceptions.
..
.. bpo: 23835
.. date: 2017-08-21-16-06-19
.. nonce: da_4Kz
.. section: Library
configparser: reading defaults in the ``ConfigParser()`` constructor is now
using ``read_dict()``, making its behavior consistent with the rest of the
parser.  Non-string keys and values in the defaults dictionary are now being
implicitly converted to strings.  Patch by James Tocknell.
..
.. bpo: 31238
.. date: 2017-08-21-12-31-53
.. nonce: Gg0LRH
.. section: Library
pydoc: the stop() method of the private ServerThread class now waits until
DocServer.serve_until_quit() completes and then explicitly sets its
docserver attribute to None to break a reference cycle.
..
.. bpo: 5001
.. date: 2017-08-18-17-16-38
.. nonce: gwnthq
.. section: Library
Many asserts in ``multiprocessing`` are now more informative, and some error
types have been changed to more specific ones.
..
.. bpo: 31109
.. date: 2017-08-17-20-29-45
.. nonce: 7qtC64
.. section: Library
Convert zipimport to use Argument Clinic.
..
.. bpo: 30102
.. date: 2017-08-16-21-14-31
.. nonce: 1sPqmc
.. section: Library
The ssl and hashlib modules now call OPENSSL_add_all_algorithms_noconf() on
OpenSSL < 1.1.0. The function detects CPU features and enables optimizations
on some CPU architectures such as POWER8. Patch is based on research from
Gustavo Serra Scalet.
..
.. bpo: 18966
.. date: 2017-08-16-20-28-06
.. nonce: mjHWk2
.. section: Library
Non-daemonic threads created by a multiprocessing.Process are now joined on
child exit.
..
.. bpo: 31183
.. date: 2017-08-13-09-17-01
.. nonce: -2_YGj
.. section: Library
``dis`` now works with asynchronous generator and coroutine objects. Patch by
George Collins based on diagnosis by Luciano Ramalho.
..
.. bpo: 5001
.. date: 2017-08-12-09-25-55
.. nonce: huQi2Y
.. section: Library
There are a number of uninformative asserts in the ``multiprocessing`` module,
as noted in issue 5001. This change fixes two of the most potentially
problematic ones, since they are in error-reporting code, in the
``multiprocessing.managers.convert_to_error`` function. (It also makes more
informative a ValueError message.) The only potentially problematic change
is that the AssertionError is now a TypeError; however, this should also
help distinguish it from an AssertionError being *reported* by the
function/its caller (such as in issue 31169). - Patch by Allen W. Smith
(drallensmith on github).
..
.. bpo: 31185
.. date: 2017-08-11-19-30-00
.. nonce: i6TPgL
.. section: Library
Fixed miscellaneous errors in asyncio speedup module.
..
.. bpo: 31151
.. date: 2017-08-10-13-20-02
.. nonce: 730VBI
.. section: Library
socketserver.ForkingMixIn.server_close() now waits until all child processes
completed to prevent leaking zombie processes.
..
.. bpo: 31072
.. date: 2017-08-09-13-45-23
.. nonce: NLXDPV
.. section: Library
Add an ``include_file`` parameter to ``zipapp.create_archive()``
..
.. bpo: 24700
.. date: 2017-08-08-15-14-34
.. nonce: 44mvNV
.. section: Library
Optimize array.array comparison. It is now from 10x up to 70x faster when
comparing arrays holding values of the same integer type.
..
.. bpo: 31135
.. date: 2017-08-08-14-44-37
.. nonce: HH94xR
.. section: Library
ttk: fix the destroy() method of LabeledScale and OptionMenu classes. Call
the parent destroy() method even if the used attribute doesn't exist. The
LabeledScale.destroy() method now also explicitly clears label and scale
attributes to help the garbage collector to destroy all widgets.
..
.. bpo: 31107
.. date: 2017-08-02-12-48-15
.. nonce: 1t2hn5
.. section: Library
Fix ``copyreg._slotnames()`` mangled attribute calculation for classes whose
name begins with an underscore. Patch by Shane Harvey.
..
.. bpo: 31080
.. date: 2017-08-01-18-26-55
.. nonce: 2CFVCO
.. section: Library
Allow ``logging.config.fileConfig`` to accept kwargs and/or args.
..
.. bpo: 30897
.. date: 2017-08-01-15-56-50
.. nonce: OuT1-Y
.. section: Library
``pathlib.Path`` objects now include an ``is_mount()`` method (only
implemented on POSIX).  This is similar to ``os.path.ismount(p)``. Patch by
Cooper Ry Lees.
..
.. bpo: 31061
.. date: 2017-08-01-09-32-58
.. nonce: husAYX
.. section: Library
Fixed a crash when using asyncio and threads.
..
.. bpo: 30987
.. date: 2017-07-30-22-00-12
.. nonce: 228rW0
.. section: Library
Added support for CAN ISO-TP protocol in the socket module.
..
.. bpo: 30522
.. date: 2017-07-30-10-07-58
.. nonce: gAX1N-
.. section: Library
Added a ``setStream`` method to ``logging.StreamHandler`` to allow the
stream to be set after creation.
..
.. bpo: 30502
.. date: 2017-07-27-11-33-58
.. nonce: GJlfU8
.. section: Library
Fix handling of long oids in ssl.  Based on patch by Christian Heimes.
..
.. bpo: 5288
.. date: 2017-07-26-13-18-29
.. nonce: o_xEGj
.. section: Library
Support tzinfo objects with sub-minute offsets.
..
.. bpo: 30919
.. date: 2017-07-23-11-33-10
.. nonce: 5dYRru
.. section: Library
Fix shared memory performance regression in multiprocessing in 3.x.
Shared memory used anonymous memory mappings in 2.x, while 3.x mmaps actual
files. Try to be careful to do as little disk I/O as possible.
..
.. bpo: 26732
.. date: 2017-07-22-12-12-42
.. nonce: lYLWBH
.. section: Library
Fix too many fds in processes started with the "forkserver" method.
A child process would inherit as many fds as the number of still-running
children.
..
.. bpo: 29403
.. date: 2017-07-20-02-29-49
.. nonce: 3RinCV
.. section: Library
Fix ``unittest.mock``'s autospec to not fail on method-bound builtin
functions.  Patch by Aaron Gallagher.
..
.. bpo: 30961
.. date: 2017-07-18-23-47-51
.. nonce: 064jz0
.. section: Library
Fix decrementing a borrowed reference in tracemalloc.
..
.. bpo: 19896
.. date: 2017-07-18-13-24-50
.. nonce: -S0IWu
.. section: Library
Fix multiprocessing.sharedctypes to recognize typecodes ``'q'`` and ``'Q'``.
..
.. bpo: 30946
.. date: 2017-07-17-12-32-47
.. nonce: DUo-uA
.. section: Library
Remove obsolete code in readline module for platforms where GNU readline is
older than 2.1 or where select() is not available.
..
.. bpo: 25684
.. date: 2017-07-17-11-35-00
.. nonce: usELVx
.. section: Library
Change ``ttk.OptionMenu`` radiobuttons to be unique across instances of
``OptionMenu``.
..
.. bpo: 30886
.. date: 2017-07-10-12-14-22
.. nonce: nqQj34
.. section: Library
Fix multiprocessing.Queue.join_thread(): it now waits until the thread
completes, even if the thread was started by the same process which created
the queue.
..
.. bpo: 29854
.. date: 2017-07-07-02-18-57
.. nonce: J8wKb_
.. section: Library
Fix segfault in readline when using readline's history-size option.  Patch
by Nir Soffer.
..
.. bpo: 30794
.. date: 2017-07-04-22-00-20
.. nonce: qFwozm
.. section: Library
Added multiprocessing.Process.kill method to terminate using the SIGKILL
signal on Unix.
..
.. bpo: 30319
.. date: 2017-07-04-13-48-21
.. nonce: hg_3TX
.. section: Library
socket.close() now ignores ECONNRESET error.
..
.. bpo: 30828
.. date: 2017-07-04-13-10-52
.. nonce: CLvEvV
.. section: Library
Fix out of bounds write in ``asyncio.CFuture.remove_done_callback()``.
..
.. bpo: 30302
.. date: 2017-06-30-23-05-47
.. nonce: itwK_k
.. section: Library
Use keywords in the ``repr`` of ``datetime.timedelta``.
..
.. bpo: 30807
.. date: 2017-06-29-22-04-44
.. nonce: sLtjY-
.. section: Library
signal.setitimer() may disable the timer when passed a tiny value.
Tiny values (such as 1e-6) are valid non-zero values for setitimer(), which
is specified as taking microsecond-resolution intervals. However, on some
platform, our conversion routine could convert 1e-6 into a zero interval,
therefore disabling the timer instead of (re-)scheduling it.
..
.. bpo: 30441
.. date: 2017-06-29-14-25-14
.. nonce: 3Wh9kc
.. section: Library
Fix bug when modifying os.environ while iterating over it
..
.. bpo: 29585
.. date: 2017-06-29-00-17-38
.. nonce: x2V0my
.. section: Library
Avoid importing ``sysconfig`` from ``site`` to improve startup speed. Python
startup is about 5% faster on Linux and 30% faster on macOS.
..
.. bpo: 29293
.. date: 2017-06-29-00-07-22
.. nonce: Z6WZjD
.. section: Library
Add missing parameter "n" on multiprocessing.Condition.notify().
The doc claims multiprocessing.Condition behaves like threading.Condition,
but its notify() method lacked the optional "n" argument (to specify the
number of sleepers to wake up) that threading.Condition.notify() accepts.
..
.. bpo: 30532
.. date: 2017-06-26-11-01-59
.. nonce: qTeL1o
.. section: Library
Fix email header value parser dropping folding white space in certain cases.
..
.. bpo: 30596
.. date: 2017-06-24-18-55-58
.. nonce: VhB8iG
.. section: Library
Add a ``close()`` method to ``multiprocessing.Process``.
..
.. bpo: 9146
.. date: 2017-05-24-00-00-00
.. nonce: pinky_
.. section: Library
Fix a segmentation fault in _hashopenssl when standard hash functions such
as md5 are not available in the linked OpenSSL library.  As in some special
FIPS-140 build environments.
..
.. bpo: 29169
.. date: 0352
.. nonce: 8ypApm
.. section: Library
Update zlib to 1.2.11.
..
.. bpo: 30119
.. date: 0351
.. nonce: 4UMLNh
.. section: Library
ftplib.FTP.putline() now throws ValueError on commands that contains CR or
LF. Patch by Donghee Na.
..
.. bpo: 30879
.. date: 0350
.. nonce: N3KI-o
.. section: Library
os.listdir() and os.scandir() now emit bytes names when called with
bytes-like argument.
..
.. bpo: 30746
.. date: 0349
.. nonce: 7drQI0
.. section: Library
Prohibited the '=' character in environment variable names in
``os.putenv()`` and ``os.spawn*()``.
..
.. bpo: 30664
.. date: 0348
.. nonce: oyqiUl
.. section: Library
The description of a unittest subtest now preserves the order of keyword
arguments of TestCase.subTest().
..
.. bpo: 21071
.. date: 0346
.. nonce: Sw37rs
.. section: Library
struct.Struct.format type is now :class:`str` instead of :class:`bytes`.
..
.. bpo: 29212
.. date: 0345
.. nonce: HmTdef
.. section: Library
Fix concurrent.futures.thread.ThreadPoolExecutor threads to have a non
repr() based thread name by default when no thread_name_prefix is supplied.
They will now identify themselves as "ThreadPoolExecutor-y_n".
..
.. bpo: 29755
.. date: 0343
.. nonce: diQcY_
.. section: Library
Fixed the lgettext() family of functions in the gettext module. They now
always return bytes.
..
.. bpo: 30616
.. date: 0341
.. nonce: I2mDTz
.. section: Library
Functional API of enum allows to create empty enums. Patched by Donghee Na
..
.. bpo: 30038
.. date: 0340
.. nonce: vb4DWk
.. section: Library
Fix race condition between signal delivery and wakeup file descriptor. Patch
by Nathaniel Smith.
..
.. bpo: 23894
.. date: 0339
.. nonce: k2pADV
.. section: Library
lib2to3 now recognizes ``rb'...'`` and ``f'...'`` strings.
..
.. bpo: 24744
.. date: 0337
.. nonce: NKxUj3
.. section: Library
pkgutil.walk_packages function now raises ValueError if *path* is a string.
Patch by Sanyam Khurana.
..
.. bpo: 24484
.. date: 0336
.. nonce: vFem8K
.. section: Library
Avoid race condition in multiprocessing cleanup.
..
.. bpo: 30589
.. date: 0335
.. nonce: xyZGM0
.. section: Library
Fix multiprocessing.Process.exitcode to return the opposite of the signal
number when the process is killed by a signal (instead of 255) when using
the "forkserver" method.
..
.. bpo: 28994
.. date: 0334
.. nonce: 9vzun1
.. section: Library
The traceback no longer displayed for SystemExit raised in a callback
registered by atexit.
..
.. bpo: 30508
.. date: 0333
.. nonce: wNWRS2
.. section: Library
Don't log exceptions if Task/Future "cancel()" method was called.
..
.. bpo: 30645
.. date: 0332
.. nonce: xihJ4Y
.. section: Library
Fix path calculation in ``imp.load_package()``, fixing it for cases when a
package is only shipped with bytecodes. Patch by Alexandru Ardelean.
..
.. bpo: 11822
.. date: 0331
.. nonce: GQmKw3
.. section: Library
The dis.dis() function now is able to disassemble nested code objects.
..
.. bpo: 30624
.. date: 0330
.. nonce: g5oVSn
.. section: Library
selectors does not take KeyboardInterrupt and SystemExit into account,
leaving a fd in a bad state in case of error. Patch by Giampaolo Rodola'.
..
.. bpo: 30595
.. date: 0329
.. nonce: d0nRRA
.. section: Library
multiprocessing.Queue.get() with a timeout now polls its reader in
non-blocking mode if it succeeded to acquire the lock but the acquire took
longer than the timeout.
..
.. bpo: 28556
.. date: 0328
.. nonce: mESP7G
.. section: Library
Updates to typing module: Add generic AsyncContextManager, add support for
ContextManager on all versions. Original PRs by Jelle Zijlstra and Ivan
Levkivskyi
..
.. bpo: 30605
.. date: 0327
.. nonce: XqGz1r
.. section: Library
re.compile() no longer raises a BytesWarning when compiling a bytes instance
with misplaced inline modifier.  Patch by Roy Williams.
..
.. bpo: 29870
.. date: 0326
.. nonce: p960Ih
.. section: Library
Fix ssl sockets leaks when connection is aborted in asyncio/ssl
implementation. Patch by Michaël Sghaïer.
..
.. bpo: 29743
.. date: 0325
.. nonce: en2P4s
.. section: Library
Closing transport during handshake process leaks open socket. Patch by
Nikolay Kim
..
.. bpo: 27585
.. date: 0324
.. nonce: 0Ugqqu
.. section: Library
Fix waiter cancellation in asyncio.Lock. Patch by Mathieu Sornay.
..
.. bpo: 30014
.. date: 0323
.. nonce: x7Yx6o
.. section: Library
modify() method of poll(), epoll() and devpoll() based classes of selectors
module is around 10% faster.  Patch by Giampaolo Rodola'.
..
.. bpo: 30418
.. date: 0322
.. nonce: EwISQm
.. section: Library
On Windows, subprocess.Popen.communicate() now also ignore EINVAL on
stdin.write() if the child process is still running but closed the pipe.
..
.. bpo: 30463
.. date: 0321
.. nonce: CdOuSl
.. section: Library
Added empty __slots__ to abc.ABC.  This allows subclassers to deny __dict__
and __weakref__ creation.  Patch by Aaron Hall.
..
.. bpo: 30520
.. date: 0320
.. nonce: VYzaSn
.. section: Library
Loggers are now pickleable.
..
.. bpo: 30557
.. date: 0319
.. nonce: uykrLf
.. section: Library
faulthandler now correctly filters and displays exception codes on Windows
..
.. bpo: 30526
.. date: 0318
.. nonce: 7zTG30
.. section: Library
Add TextIOWrapper.reconfigure() and a TextIOWrapper.write_through attribute.
..
.. bpo: 30245
.. date: 0317
.. nonce: Xoa_8Y
.. section: Library
Fix possible overflow when organize struct.pack_into error message.  Patch
by Yuan Liu.
..
.. bpo: 30378
.. date: 0316
.. nonce: R_19_5
.. section: Library
Fix the problem that logging.handlers.SysLogHandler cannot handle IPv6
addresses.
..
.. bpo: 16500
.. date: 0315
.. nonce: 9ypo9k
.. section: Library
Allow registering at-fork handlers.
..
.. bpo: 30470
.. date: 0314
.. nonce: wAYhUc
.. section: Library
Deprecate invalid ctypes call protection on Windows.  Patch by Mariatta
Wijaya.
..
.. bpo: 30414
.. date: 0313
.. nonce: jGl1Lb
.. section: Library
multiprocessing.Queue._feed background running thread do not break from main
loop on exception.
..
.. bpo: 30003
.. date: 0312
.. nonce: BOl9HE
.. section: Library
Fix handling escape characters in HZ codec.  Based on patch by Ma Lin.
..
.. bpo: 30149
.. date: 0311
.. nonce: hE649r
.. section: Library
inspect.signature() now supports callables with variable-argument parameters
wrapped with partialmethod. Patch by Donghee Na.
..
.. bpo: 30436
.. date: 0310
.. nonce: b3zqE7
.. section: Library
importlib.find_spec() raises ModuleNotFoundError instead of AttributeError
if the specified parent module is not a package (i.e. lacks a __path__
attribute).
..
.. bpo: 30301
.. date: 0309
.. nonce: ywOkjN
.. section: Library
Fix AttributeError when using SimpleQueue.empty() under *spawn* and
*forkserver* start methods.
..
.. bpo: 30375
.. date: 0308
.. nonce: 9c8qM7
.. section: Library
Warnings emitted when compile a regular expression now always point to the
line in the user code.  Previously they could point into inners of the re
module if emitted from inside of groups or conditionals.
..
.. bpo: 30329
.. date: 0307
.. nonce: EuT36N
.. section: Library
imaplib and poplib now catch the Windows socket WSAEINVAL error (code 10022)
on shutdown(SHUT_RDWR): An invalid operation was attempted. This error
occurs sometimes on SSL connections.
..
.. bpo: 29196
.. date: 0306
.. nonce: qBq9eB
.. section: Library
Removed previously deprecated in Python 2.4 classes Plist, Dict and
_InternalDict in the plistlib module.  Dict values in the result of
functions readPlist() and readPlistFromBytes() are now normal dicts.  You no
longer can use attribute access to access items of these dictionaries.
..
.. bpo: 9850
.. date: 0305
.. nonce: c6SMxt
.. section: Library
The :mod:`macpath` is now deprecated and will be removed in Python 3.8.
..
.. bpo: 30299
.. date: 0304
.. nonce: O-5d4A
.. section: Library
Compiling regular expression in debug mode on CPython now displays the
compiled bytecode in human readable form.
..
.. bpo: 30048
.. date: 0303
.. nonce: ELRx8R
.. section: Library
Fixed ``Task.cancel()`` can be ignored when the task is running coroutine
and the coroutine returned without any more ``await``.
..
.. bpo: 30266
.. date: 0302
.. nonce: YJzHAH
.. section: Library
contextlib.AbstractContextManager now supports anti-registration by setting
__enter__ = None or __exit__ = None, following the pattern introduced in
bpo-25958. Patch by Jelle Zijlstra.
..
.. bpo: 30340
.. date: 0301
.. nonce: kvtGm-
.. section: Library
Enhanced regular expressions optimization. This increased the performance of
matching some patterns up to 25 times.
..
.. bpo: 30298
.. date: 0300
.. nonce: ZN-bWo
.. section: Library
Weaken the condition of deprecation warnings for inline modifiers. Now
allowed several subsequential inline modifiers at the start of the pattern
(e.g. ``'(?i)(?s)...'``).  In verbose mode whitespaces and comments now are
allowed before and between inline modifiers (e.g. ``'(?x) (?i) (?s)...'``).
..
.. bpo: 30285
.. date: 0299
.. nonce: s1vpsO
.. section: Library
Optimized case-insensitive matching and searching of regular expressions.
..
.. bpo: 29990
.. date: 0298
.. nonce: HWV6KE
.. section: Library
Fix range checking in GB18030 decoder.  Original patch by Ma Lin.
..
.. bpo: 29979
.. date: 0297
.. nonce: jGBMyE
.. section: Library
rewrite cgi.parse_multipart, reusing the FieldStorage class and making its
results consistent with those of FieldStorage for multipart/form-data
requests. Patch by Pierre Quentel.
..
.. bpo: 30243
.. date: 0296
.. nonce: RHQt0v
.. section: Library
Removed the __init__ methods of _json's scanner and encoder. Misusing them
could cause memory leaks or crashes.  Now scanner and encoder objects are
completely initialized in the __new__ methods.
..
.. bpo: 30215
.. date: 0295
.. nonce: SY8738
.. section: Library
Compiled regular expression objects with the re.LOCALE flag no longer depend
on the locale at compile time.  Only the locale at matching time affects the
result of matching.
..
.. bpo: 30185
.. date: 0294
.. nonce: Tiu1n8
.. section: Library
Avoid KeyboardInterrupt tracebacks in forkserver helper process when Ctrl-C
is received.
..
.. bpo: 30103
.. date: 0293
.. nonce: mmPjf5
.. section: Library
binascii.b2a_uu() and uu.encode() now support using ``'`'`` as zero instead
of space.
..
.. bpo: 28556
.. date: 0292
.. nonce: 51gjbP
.. section: Library
Various updates to typing module: add typing.NoReturn type, use
WrapperDescriptorType, minor bug-fixes.  Original PRs by Jim
Fasarakis-Hilliard and Ivan Levkivskyi.
..
.. bpo: 30205
.. date: 0291
.. nonce: BsxO34
.. section: Library
Fix getsockname() for unbound AF_UNIX sockets on Linux.
..
.. bpo: 30228
.. date: 0290
.. nonce: nF8Ov4
.. section: Library
The seek() and tell() methods of io.FileIO now set the internal seekable
attribute to avoid one syscall on open() (in buffered or text mode).
..
.. bpo: 30190
.. date: 0289
.. nonce: 5E7Hyb
.. section: Library
unittest's assertAlmostEqual and assertNotAlmostEqual provide a better
message in case of failure which includes the difference between left and
right arguments.  (patch by Giampaolo Rodola')
..
.. bpo: 30101
.. date: 0288
.. nonce: hxUqSL
.. section: Library
Add support for curses.A_ITALIC.
..
.. bpo: 29822
.. date: 0287
.. nonce: G7dX13
.. section: Library
inspect.isabstract() now works during __init_subclass__.  Patch by Nate
Soares.
..
.. bpo: 29960
.. date: 0286
.. nonce: g0wr3r
.. section: Library
Preserve generator state when _random.Random.setstate() raises an exception.
Patch by Bryan Olson.
..
.. bpo: 30070
.. date: 0285
.. nonce: XM_B41
.. section: Library
Fixed leaks and crashes in errors handling in the parser module.
..
.. bpo: 22352
.. date: 0284
.. nonce: gIQ5qC
.. section: Library
Column widths in the output of dis.dis() are now adjusted for large line
numbers and instruction offsets.
..
.. bpo: 30061
.. date: 0283
.. nonce: 2w_dX9
.. section: Library
Fixed crashes in IOBase methods __next__() and readlines() when readline()
or __next__() respectively return non-sizeable object. Fixed possible other
errors caused by not checking results of PyObject_Size(), PySequence_Size(),
or PyMapping_Size().
..
.. bpo: 30218
.. date: 0282
.. nonce: ab5oIg
.. section: Library
Fix PathLike support for shutil.unpack_archive. Patch by Jelle Zijlstra.
..
.. bpo: 10076
.. date: 0281
.. nonce: qCnwly
.. section: Library
Compiled regular expression and match objects in the re module now support
copy.copy() and copy.deepcopy() (they are considered atomic).
..
.. bpo: 30068
.. date: 0280
.. nonce: n4q47r
.. section: Library
_io._IOBase.readlines will check if it's closed first when hint is present.
..
.. bpo: 29694
.. date: 0279
.. nonce: LWKxb1
.. section: Library
Fixed race condition in pathlib mkdir with flags parents=True.  Patch by
Armin Rigo.
..
.. bpo: 29692
.. date: 0278
.. nonce: oyWrAE
.. section: Library
Fixed arbitrary unchaining of RuntimeError exceptions in
contextlib.contextmanager.  Patch by Siddharth Velankar.
..
.. bpo: 26187
.. date: 0277
.. nonce: aViyiR
.. section: Library
Test that sqlite3 trace callback is not called multiple times when schema is
changing.  Indirectly fixed by switching to use sqlite3_prepare_v2() in
bpo-9303.  Patch by Aviv Palivoda.
..
.. bpo: 30017
.. date: 0276
.. nonce: cKBuhU
.. section: Library
Allowed calling the close() method of the zip entry writer object multiple
times.  Writing to a closed writer now always produces a ValueError.
..
.. bpo: 29998
.. date: 0275
.. nonce: poeIKD
.. section: Library
Pickling and copying ImportError now preserves name and path attributes.
..
.. bpo: 29995
.. date: 0274
.. nonce: b3mOqx
.. section: Library
re.escape() now escapes only regex special characters.
..
.. bpo: 29962
.. date: 0273
.. nonce: r-ibsN
.. section: Library
Add math.remainder operation, implementing remainder as specified in IEEE
754.
..
.. bpo: 29649
.. date: 0272
.. nonce: 2eIxQ8
.. section: Library
Improve struct.pack_into() exception messages for problems with the buffer
size and offset.  Patch by Andrew Nester.
..
.. bpo: 29654
.. date: 0271
.. nonce: xRFPge
.. section: Library
Support If-Modified-Since HTTP header (browser cache).  Patch by Pierre
Quentel.
..
.. bpo: 29931
.. date: 0270
.. nonce: tfcTwK
.. section: Library
Fixed comparison check for ipaddress.ip_interface objects. Patch by Sanjay
Sundaresan.
..
.. bpo: 29953
.. date: 0269
.. nonce: Q1hSt-
.. section: Library
Fixed memory leaks in the replace() method of datetime and time objects when
pass out of bound fold argument.
..
.. bpo: 29942
.. date: 0268
.. nonce: CsGNuT
.. section: Library
Fix a crash in itertools.chain.from_iterable when encountering long runs of
empty iterables.
..
.. bpo: 10030
.. date: 0267
.. nonce: ZdhU3k
.. section: Library
Sped up reading encrypted ZIP files by 2 times.
..
.. bpo: 29204
.. date: 0266
.. nonce: 8Hbqn2
.. section: Library
Element.getiterator() and the html parameter of XMLParser() were deprecated
only in the documentation (since Python 3.2 and 3.4 correspondingly). Now
using them emits a deprecation warning.
..
.. bpo: 27863
.. date: 0265
.. nonce: pPYHHI
.. section: Library
Fixed multiple crashes in ElementTree caused by race conditions and wrong
types.
..
.. bpo: 25996
.. date: 0264
.. nonce: L2_giP
.. section: Library
Added support of file descriptors in os.scandir() on Unix. os.fwalk() is
sped up by 2 times by using os.scandir().
..
.. bpo: 28699
.. date: 0263
.. nonce: wZztZP
.. section: Library
Fixed a bug in pools in multiprocessing.pool that raising an exception at
the very first of an iterable may swallow the exception or make the program
hang. Patch by Davin Potts and Xiang Zhang.
..
.. bpo: 23890
.. date: 0262
.. nonce: GCFAAZ
.. section: Library
unittest.TestCase.assertRaises() now manually breaks a reference cycle to
not keep objects alive longer than expected.
..
.. bpo: 29901
.. date: 0261
.. nonce: QdgMvW
.. section: Library
The zipapp module now supports general path-like objects, not just
pathlib.Path.
..
.. bpo: 25803
.. date: 0260
.. nonce: CPDR0W
.. section: Library
Avoid incorrect errors raised by Path.mkdir(exist_ok=True) when the OS gives
priority to errors such as EACCES over EEXIST.
..
.. bpo: 29861
.. date: 0259
.. nonce: t2ZoRK
.. section: Library
Release references to tasks, their arguments and their results as soon as
they are finished in multiprocessing.Pool.
..
.. bpo: 19930
.. date: 0258
.. nonce: QCjO6A
.. section: Library
The mode argument of os.makedirs() no longer affects the file permission
bits of newly created intermediate-level directories.
..
.. bpo: 29884
.. date: 0257
.. nonce: kWXR8W
.. section: Library
faulthandler: Restore the old sigaltstack during teardown. Patch by
Christophe Zeitouny.
..
.. bpo: 25455
.. date: 0256
.. nonce: ZsahHN
.. section: Library
Fixed crashes in repr of recursive buffered file-like objects.
..
.. bpo: 29800
.. date: 0255
.. nonce: d2xASa
.. section: Library
Fix crashes in partial.__repr__ if the keys of partial.keywords are not
strings.  Patch by Michael Seifert.
..
.. bpo: 8256
.. date: 0254
.. nonce: jAwGQH
.. section: Library
Fixed possible failing or crashing input() if attributes "encoding" or
"errors" of sys.stdin or sys.stdout are not set or are not strings.
..
.. bpo: 28692
.. date: 0253
.. nonce: CDt-Gb
.. section: Library
Using non-integer value for selecting a plural form in gettext is now
deprecated.
..
.. bpo: 26121
.. date: 0252
.. nonce: LX-pQA
.. section: Library
Use C library implementation for math functions erf() and erfc().
..
.. bpo: 29619
.. date: 0251
.. nonce: WIGVxO
.. section: Library
os.stat() and os.DirEntry.inode() now convert inode (st_ino) using unsigned
integers.
..
.. bpo: 28298
.. date: 0250
.. nonce: PNOPsT
.. section: Library
Fix a bug that prevented array 'Q', 'L' and 'I' from accepting big intables
(objects that have __int__) as elements.
..
.. bpo: 29645
.. date: 0249
.. nonce: XCxTHM
.. section: Library
Speed up importing the webbrowser module.  webbrowser.register() is now
thread-safe.
..
.. bpo: 28231
.. date: 0248
.. nonce: MG1X09
.. section: Library
The zipfile module now accepts path-like objects for external paths.
..
.. bpo: 26915
.. date: 0247
.. nonce: qShJZO
.. section: Library
index() and count() methods of collections.abc.Sequence now check identity
before checking equality when do comparisons.
..
.. bpo: 28682
.. date: 0246
.. nonce: hUxdej
.. section: Library
Added support for bytes paths in os.fwalk().
..
.. bpo: 29728
.. date: 0245
.. nonce: 37jMwb
.. section: Library
Add new :const:`socket.TCP_NOTSENT_LOWAT` (Linux 3.12) constant. Patch by
Nathaniel J. Smith.
..
.. bpo: 29623
.. date: 0244
.. nonce: D3-NP2
.. section: Library
Allow use of path-like object as a single argument in ConfigParser.read().
Patch by David Ellis.
..
.. bpo: 9303
.. date: 0243
.. nonce: kDZRSd
.. section: Library
Migrate sqlite3 module to _v2 API.  Patch by Aviv Palivoda.
..
.. bpo: 28963
.. date: 0242
.. nonce: tPl8dq
.. section: Library
Fix out of bound iteration in asyncio.Future.remove_done_callback
implemented in C.
..
.. bpo: 29704
.. date: 0241
.. nonce: WHbx27
.. section: Library
asyncio.subprocess.SubprocessStreamProtocol no longer closes before all
pipes are closed.
..
.. bpo: 29271
.. date: 0240
.. nonce: y8Vj2v
.. section: Library
Fix Task.current_task and Task.all_tasks implemented in C to accept None
argument as their pure Python implementation.
..
.. bpo: 29703
.. date: 0239
.. nonce: ZdsPCR
.. section: Library
Fix asyncio to support instantiation of new event loops in child processes.
..
.. bpo: 29615
.. date: 0238
.. nonce: OpFKzg
.. section: Library
SimpleXMLRPCDispatcher no longer chains KeyError (or any other exception) to
exception(s) raised in the dispatched methods. Patch by Petr Motejlek.
..
.. bpo: 7769
.. date: 0237
.. nonce: xGRJWh
.. section: Library
Method register_function() of xmlrpc.server.SimpleXMLRPCDispatcher and its
subclasses can now be used as a decorator.
..
.. bpo: 29376
.. date: 0236
.. nonce: rrJhJy
.. section: Library
Fix assertion error in threading._DummyThread.is_alive().
..
.. bpo: 28624
.. date: 0235
.. nonce: 43TJib
.. section: Library
Add a test that checks that cwd parameter of Popen() accepts PathLike
objects.  Patch by Sayan Chowdhury.
..
.. bpo: 28518
.. date: 0234
.. nonce: o-Q2Nw
.. section: Library
Start a transaction implicitly before a DML statement. Patch by Aviv
Palivoda.
..
.. bpo: 29742
.. date: 0233
.. nonce: 8hqfEO
.. section: Library
get_extra_info() raises exception if get called on closed ssl transport.
Patch by Nikolay Kim.
..
.. bpo: 16285
.. date: 0232
.. nonce: 4f5gbp
.. section: Library
urllib.parse.quote is now based on RFC 3986 and hence includes '~' in the
set of characters that is not quoted by default. Patch by Christian Theune
and Ratnadeep Debnath.
..
.. bpo: 29532
.. date: 0231
.. nonce: YCwVQn
.. section: Library
Altering a kwarg dictionary passed to functools.partial() no longer affects
a partial object after creation.
..
.. bpo: 29110
.. date: 0230
.. nonce: wmE-_T
.. section: Library
Fix file object leak in aifc.open() when file is given as a filesystem path
and is not in valid AIFF format. Patch by Anthony Zhang.
..
.. bpo: 22807
.. date: 0229
.. nonce: VmoSkZ
.. section: Library
Add uuid.SafeUUID and uuid.UUID.is_safe to relay information from the
platform about whether generated UUIDs are generated with a multiprocessing
safe method.
..
.. bpo: 29576
.. date: 0228
.. nonce: F-b8_5
.. section: Library
Improve some deprecations in importlib. Some deprecated methods now emit
DeprecationWarnings and have better descriptive messages.
..
.. bpo: 29534
.. date: 0227
.. nonce: Ug3HPU
.. section: Library
Fixed different behaviour of Decimal.from_float() for _decimal and
_pydecimal. Thanks Andrew Nester.
..
.. bpo: 10379
.. date: 0226
.. nonce: mRlZsT
.. section: Library
locale.format_string now supports the 'monetary' keyword argument, and
locale.format is deprecated.
..
.. bpo: 29851
.. date: 0225
.. nonce: jqs_5s
.. section: Library
importlib.reload() now raises ModuleNotFoundError if the module lacks a
spec.
..
.. bpo: 28556
.. date: 0224
.. nonce: p6967e
.. section: Library
Various updates to typing module: typing.Counter, typing.ChainMap, improved
ABC caching, etc. Original PRs by Jelle Zijlstra, Ivan Levkivskyi, Manuel
Krebber, and Łukasz Langa.
..
.. bpo: 29100
.. date: 0223
.. nonce: LAAERS
.. section: Library
Fix datetime.fromtimestamp() regression introduced in Python 3.6.0: check
minimum and maximum years.
..
.. bpo: 29416
.. date: 0222
.. nonce: KJGyI_
.. section: Library
Prevent infinite loop in pathlib.Path.mkdir
..
.. bpo: 29444
.. date: 0221
.. nonce: cEwgmk
.. section: Library
Fixed out-of-bounds buffer access in the group() method of the match object.
Based on patch by WGH.
..
.. bpo: 29377
.. date: 0220
.. nonce: 4AvSrC
.. section: Library
Add WrapperDescriptorType, MethodWrapperType, and MethodDescriptorType
built-in types to types module. Original patch by Manuel Krebber.
..
.. bpo: 29218
.. date: 0219
.. nonce: -Qoti0
.. section: Library
Unused install_misc command is now removed.  It has been documented as
unused since 2000.  Patch by Eric N. Vander Weele.
..
.. bpo: 29368
.. date: 0218
.. nonce: nTtA_V
.. section: Library
The extend() method is now called instead of the append() method when
unpickle collections.deque and other list-like objects. This can speed up
unpickling to 2 times.
..
.. bpo: 29338
.. date: 0217
.. nonce: EpvQJl
.. section: Library
The help of a builtin or extension class now includes the constructor
signature if __text_signature__ is provided for the class.
..
.. bpo: 29335
.. date: 0216
.. nonce: _KC7IK
.. section: Library
Fix subprocess.Popen.wait() when the child process has exited to a stopped
instead of terminated state (ex: when under ptrace).
..
.. bpo: 29290
.. date: 0215
.. nonce: XBqptF
.. section: Library
Fix a regression in argparse that help messages would wrap at non-breaking
spaces.
..
.. bpo: 28735
.. date: 0214
.. nonce: admHLO
.. section: Library
Fixed the comparison of mock.MagickMock with mock.ANY.
..
.. bpo: 29197
.. date: 0213
.. nonce: sZssFZ
.. section: Library
Removed deprecated function ntpath.splitunc().
..
.. bpo: 29210
.. date: 0212
.. nonce: y1UHWf
.. section: Library
Removed support of deprecated argument "exclude" in tarfile.TarFile.add().
..
.. bpo: 29219
.. date: 0211
.. nonce: kxui7t
.. section: Library
Fixed infinite recursion in the repr of uninitialized ctypes.CDLL instances.
..
.. bpo: 29192
.. date: 0210
.. nonce: mY31H8
.. section: Library
Removed deprecated features in the http.cookies module.
..
.. bpo: 29193
.. date: 0209
.. nonce: CgcjEx
.. section: Library
A format string argument for string.Formatter.format() is now
positional-only.
..
.. bpo: 29195
.. date: 0208
.. nonce: vK5LjU
.. section: Library
Removed support of deprecated undocumented keyword arguments in methods of
regular expression objects.
..
.. bpo: 28969
.. date: 0207
.. nonce: j3HJYO
.. section: Library
Fixed race condition in C implementation of functools.lru_cache. KeyError
could be raised when cached function with full cache was simultaneously
called from different threads with the same uncached arguments.
..
.. bpo: 20804
.. date: 0206
.. nonce: XyZhvi
.. section: Library
The unittest.mock.sentinel attributes now preserve their identity when they
are copied or pickled.
..
.. bpo: 29142
.. date: 0205
.. nonce: xo6kAv
.. section: Library
In urllib.request, suffixes in no_proxy environment variable with leading
dots could match related hostnames again (e.g. .b.c matches a.b.c). Patch by
Milan Oberkirch.
..
.. bpo: 28961
.. date: 0204
.. nonce: Rt93vg
.. section: Library
Fix unittest.mock._Call helper: don't ignore the name parameter anymore.
Patch written by Jiajun Huang.
..
.. bpo: 15812
.. date: 0203
.. nonce: R1U-Ec
.. section: Library
inspect.getframeinfo() now correctly shows the first line of a context.
Patch by Sam Breese.
..
.. bpo: 28985
.. date: 0202
.. nonce: TMWJFg
.. section: Library
Update authorizer constants in sqlite3 module. Patch by Dingyuan Wang.
..
.. bpo: 29079
.. date: 0201
.. nonce: g4YLix
.. section: Library
Prevent infinite loop in pathlib.resolve() on Windows
..
.. bpo: 13051
.. date: 0200
.. nonce: YzC1Te
.. section: Library
Fixed recursion errors in large or resized curses.textpad.Textbox.  Based on
patch by Tycho Andersen.
..
.. bpo: 9770
.. date: 0199
.. nonce: WJJnwP
.. section: Library
curses.ascii predicates now work correctly with negative integers.
..
.. bpo: 28427
.. date: 0198
.. nonce: vUd-va
.. section: Library
old keys should not remove new values from WeakValueDictionary when
collecting from another thread.
..
.. bpo: 28923
.. date: 0197
.. nonce: naVULD
.. section: Library
Remove editor artifacts from Tix.py.
..
.. bpo: 28871
.. date: 0196
.. nonce: cPMXCJ
.. section: Library
Fixed a crash when deallocate deep ElementTree.
..
.. bpo: 19542
.. date: 0195
.. nonce: 5tCkaK
.. section: Library
Fix bugs in WeakValueDictionary.setdefault() and WeakValueDictionary.pop()
when a GC collection happens in another thread.
..
.. bpo: 20191
.. date: 0194
.. nonce: Q7uZCS
.. section: Library
Fixed a crash in resource.prlimit() when passing a sequence that doesn't own
its elements as limits.
..
.. bpo: 16255
.. date: 0193
.. nonce: p2YA85
.. section: Library
subprocess.Popen uses /system/bin/sh on Android as the shell, instead of
/bin/sh.
..
.. bpo: 28779
.. date: 0192
.. nonce: t-mjED
.. section: Library
multiprocessing.set_forkserver_preload() would crash the forkserver process
if a preloaded module instantiated some multiprocessing objects such as
locks.
..
.. bpo: 26937
.. date: 0191
.. nonce: c9kgiA
.. section: Library
The chown() method of the tarfile.TarFile class does not fail now when the
grp module cannot be imported, as for example on Android platforms.
..
.. bpo: 28847
.. date: 0190
.. nonce: GiWd9w
.. section: Library
dbm.dumb now supports reading read-only files and no longer writes the index
file when it is not changed.  A deprecation warning is now emitted if the
index file is missed and recreated in the 'r' and 'w' modes (will be an
error in future Python releases).
..
.. bpo: 27030
.. date: 0189
.. nonce: GoGlFH
.. section: Library
Unknown escapes consisting of ``'\'`` and an ASCII letter in re.sub()
replacement templates regular expressions now are errors.
..
.. bpo: 28835
.. date: 0188
.. nonce: iWBYH7
.. section: Library
Fix a regression introduced in warnings.catch_warnings(): call
warnings.showwarning() if it was overridden inside the context manager.
..
.. bpo: 27172
.. date: 0187
.. nonce: mVKfLT
.. section: Library
To assist with upgrades from 2.7, the previously documented deprecation of
``inspect.getfullargspec()`` has been reversed. This decision may be
revisited again after the Python 2.7 branch is no longer officially
supported.
..
.. bpo: 28740
.. date: 0186
.. nonce: rY8kz-
.. section: Library
Add sys.getandroidapilevel(): return the build time API version of Android
as an integer. Function only available on Android.
..
.. bpo: 26273
.. date: 0185
.. nonce: ilNIWN
.. section: Library
Add new :const:`socket.TCP_CONGESTION` (Linux 2.6.13) and
:const:`socket.TCP_USER_TIMEOUT` (Linux 2.6.37) constants. Patch written by
Omar Sandoval.
..
.. bpo: 28752
.. date: 0184
.. nonce: Q-4oRE
.. section: Library
Restored the __reduce__() methods of datetime objects.
..
.. bpo: 28727
.. date: 0183
.. nonce: ubZP_b
.. section: Library
Regular expression patterns, _sre.SRE_Pattern objects created by
re.compile(), become comparable (only x==y and x!=y operators). This change
should fix the issue #18383: don't duplicate warning filters when the
warnings module is reloaded (thing usually only done in unit tests).
..
.. bpo: 20572
.. date: 0182
.. nonce: NCRmvz
.. section: Library
Remove the subprocess.Popen.wait endtime parameter.  It was deprecated in
3.4 and undocumented prior to that.
..
.. bpo: 25659
.. date: 0181
.. nonce: lE2IlT
.. section: Library
In ctypes, prevent a crash calling the from_buffer() and from_buffer_copy()
methods on abstract classes like Array.
..
.. bpo: 28548
.. date: 0180
.. nonce: IeNrnG
.. section: Library
In the "http.server" module, parse the protocol version if possible, to
avoid using HTTP 0.9 in some error responses.
..
.. bpo: 19717
.. date: 0179
.. nonce: HXCAIz
.. section: Library
Makes Path.resolve() succeed on paths that do not exist. Patch by Vajrasky
Kok
..
.. bpo: 28563
.. date: 0178
.. nonce: iweEiw
.. section: Library
Fixed possible DoS and arbitrary code execution when handle plural form
selections in the gettext module.  The expression parser now supports exact
syntax supported by GNU gettext.
..
.. bpo: 28387
.. date: 0177
.. nonce: 1clJu7
.. section: Library
Fixed possible crash in _io.TextIOWrapper deallocator when the garbage
collector is invoked in other thread.  Based on patch by Sebastian Cufre.
..
.. bpo: 27517
.. date: 0176
.. nonce: 1CYM8A
.. section: Library
LZMA compressor and decompressor no longer raise exceptions if given empty
data twice.  Patch by Benjamin Fogle.
..
.. bpo: 28549
.. date: 0175
.. nonce: ShnM2y
.. section: Library
Fixed segfault in curses's addch() with ncurses6.
..
.. bpo: 28449
.. date: 0174
.. nonce: 5JK6ES
.. section: Library
tarfile.open() with mode "r" or "r:" now tries to open a tar file with
compression before trying to open it without compression.  Otherwise it had
50% chance failed with ignore_zeros=True.
..
.. bpo: 23262
.. date: 0173
.. nonce: 6EVB7N
.. section: Library
The webbrowser module now supports Firefox 36+ and derived browsers.  Based
on patch by Oleg Broytman.
..
.. bpo: 24241
.. date: 0172
.. nonce: y7N12p
.. section: Library
The webbrowser in an X environment now prefers using the default browser
directly. Also, the webbrowser register() function now has a documented
'preferred' argument, to specify browsers to be returned by get() with no
arguments. Patch by David Steele
..
.. bpo: 27939
.. date: 0171
.. nonce: mTfADV
.. section: Library
Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused by
representing the scale as float value internally in Tk.  tkinter.IntVar now
works if float value is set to underlying Tk variable.
..
.. bpo: 28255
.. date: 0170
.. nonce: G3iOPm
.. section: Library
calendar.TextCalendar.prweek() no longer prints a space after a weeks's
calendar.  calendar.TextCalendar.pryear() no longer prints redundant newline
after a year's calendar.  Based on patch by Xiang Zhang.
..
.. bpo: 28255
.. date: 0169
.. nonce: fHNZu0
.. section: Library
calendar.TextCalendar.prmonth() no longer prints a space at the start of new
line after printing a month's calendar.  Patch by Xiang Zhang.
..
.. bpo: 20491
.. date: 0168
.. nonce: ObgnQ2
.. section: Library
The textwrap.TextWrapper class now honors non-breaking spaces. Based on
patch by Kaarle Ritvanen.
..
.. bpo: 28353
.. date: 0167
.. nonce: sKGbLL
.. section: Library
os.fwalk() no longer fails on broken links.
..
.. bpo: 28430
.. date: 0166
.. nonce: 4MiEYT
.. section: Library
Fix iterator of C implemented asyncio.Future doesn't accept non-None value
is passed to it.send(val).
..
.. bpo: 27025
.. date: 0165
.. nonce: foAViS
.. section: Library
Generated names for Tkinter widgets now start by the "!" prefix for
readability.
..
.. bpo: 25464
.. date: 0164
.. nonce: HDUTCu
.. section: Library
Fixed HList.header_exists() in tkinter.tix module by addin a workaround to
Tix library bug.
..
.. bpo: 28488
.. date: 0163
.. nonce: TgO112
.. section: Library
shutil.make_archive() no longer adds entry "./" to ZIP archive.
..
.. bpo: 25953
.. date: 0162
.. nonce: EKKJAQ
.. section: Library
re.sub() now raises an error for invalid numerical group reference in
replacement template even if the pattern is not found in the string.  Error
message for invalid group reference now includes the group index and the
position of the reference. Based on patch by SilentGhost.
..
.. bpo: 28469
.. date: 0161
.. nonce: QZW1Np
.. section: Library
timeit now uses the sequence 1, 2, 5, 10, 20, 50,... instead of 1, 10,
100,... for autoranging.
..
.. bpo: 28115
.. date: 0160
.. nonce: 4FIjIE
.. section: Library
Command-line interface of the zipfile module now uses argparse. Added
support of long options.
..
.. bpo: 18219
.. date: 0159
.. nonce: 1ANQN1
.. section: Library
Optimize csv.DictWriter for large number of columns. Patch by Mariatta
Wijaya.
..
.. bpo: 28448
.. date: 0158
.. nonce: 5bduWe
.. section: Library
Fix C implemented asyncio.Future didn't work on Windows.
..
.. bpo: 23214
.. date: 0157
.. nonce: -4Q5Z7
.. section: Library
In the "io" module, the argument to BufferedReader and BytesIO's read1()
methods is now optional and can be -1, matching the BufferedIOBase
specification.
..
.. bpo: 28480
.. date: 0156
.. nonce: 9lHw6m
.. section: Library
Fix error building socket module when multithreading is disabled.
..
.. bpo: 28240
.. date: 0155
.. nonce: hqzQvS
.. section: Library
timeit: remove ``-c/--clock`` and ``-t/--time`` command line options which
were deprecated since Python 3.3.
..
.. bpo: 28240
.. date: 0154
.. nonce: IwQMgd
.. section: Library
timeit now repeats the benchmarks 5 times instead of only 3 to make
benchmarks more reliable.
..
.. bpo: 28240
.. date: 0153
.. nonce: cXljq-
.. section: Library
timeit autorange now uses a single loop iteration if the benchmark takes
less than 10 seconds, instead of 10 iterations. "python3 -m timeit -s
'import time' 'time.sleep(1)'" now takes 4 seconds instead of 40 seconds.
..
.. bpo: 0
.. date: 0152
.. nonce: 5Y0ngw
.. section: Library
Distutils.sdist now looks for README and setup.py files with case
sensitivity. This behavior matches that found in Setuptools 6.0 and later.
See `setuptools 100 <https://github.com/pypa/setuptools/issues/100>`_ for
rationale.
..
.. bpo: 24452
.. date: 0151
.. nonce: pVsjt0
.. section: Library
Make webbrowser support Chrome on Mac OS X. Patch by Ned Batchelder.
..
.. bpo: 20766
.. date: 0150
.. nonce: 4kvCzx
.. section: Library
Fix references leaked by pdb in the handling of SIGINT handlers.
..
.. bpo: 27998
.. date: 0149
.. nonce: CPhy4H
.. section: Library
Fixed bytes path support in os.scandir() on Windows. Patch by Eryk Sun.
..
.. bpo: 28317
.. date: 0148
.. nonce: LgHleA
.. section: Library
The disassembler now decodes FORMAT_VALUE argument.
..
.. bpo: 28380
.. date: 0147
.. nonce: jKPMzH
.. section: Library
unittest.mock Mock autospec functions now properly support assert_called,
assert_not_called, and assert_called_once.
..
.. bpo: 28229
.. date: 0146
.. nonce: BKAxcS
.. section: Library
lzma module now supports pathlib.
..
.. bpo: 28321
.. date: 0145
.. nonce: bQ-IIX
.. section: Library
Fixed writing non-BMP characters with binary format in plistlib.
..
.. bpo: 28225
.. date: 0144
.. nonce: 6N28nu
.. section: Library
bz2 module now supports pathlib.  Initial patch by Ethan Furman.
..
.. bpo: 28227
.. date: 0143
.. nonce: 7lUz8i
.. section: Library
gzip now supports pathlib.  Patch by Ethan Furman.
..
.. bpo: 28332
.. date: 0142
.. nonce: Ed8fNk
.. section: Library
Deprecated silent truncations in socket.htons and socket.ntohs. Original
patch by Oren Milman.
..
.. bpo: 27358
.. date: 0141
.. nonce: t288Iv
.. section: Library
Optimized merging var-keyword arguments and improved error message when
passing a non-mapping as a var-keyword argument.
..
.. bpo: 28257
.. date: 0140
.. nonce: SVD_IH
.. section: Library
Improved error message when passing a non-iterable as a var-positional
argument.  Added opcode BUILD_TUPLE_UNPACK_WITH_CALL.
..
.. bpo: 28322
.. date: 0139
.. nonce: l9hzap
.. section: Library
Fixed possible crashes when unpickle itertools objects from incorrect pickle
data.  Based on patch by John Leitch.
..
.. bpo: 28228
.. date: 0138
.. nonce: 1qBwdM
.. section: Library
imghdr now supports pathlib.
..
.. bpo: 28226
.. date: 0137
.. nonce: nMXiwU
.. section: Library
compileall now supports pathlib.
..
.. bpo: 28314
.. date: 0136
.. nonce: N7YrkN
.. section: Library
Fix function declaration (C flags) for the getiterator() method of
xml.etree.ElementTree.Element.
..
.. bpo: 28148
.. date: 0135
.. nonce: Flzndx
.. section: Library
Stop using localtime() and gmtime() in the time module.
Introduced platform independent _PyTime_localtime API that is similar to
POSIX localtime_r, but available on all platforms.  Patch by Ed Schouten.
..
.. bpo: 28253
.. date: 0134
.. nonce: aLfmhe
.. section: Library
Fixed calendar functions for extreme months: 0001-01 and 9999-12.
Methods itermonthdays() and itermonthdays2() are reimplemented so that they
don't call itermonthdates() which can cause datetime.date under/overflow.
..
.. bpo: 28275
.. date: 0133
.. nonce: EhWIsz
.. section: Library
Fixed possible use after free in the decompress() methods of the
LZMADecompressor and BZ2Decompressor classes. Original patch by John Leitch.
..
.. bpo: 27897
.. date: 0132
.. nonce: I0Ppmx
.. section: Library
Fixed possible crash in sqlite3.Connection.create_collation() if pass
invalid string-like object as a name.  Patch by Xiang Zhang.
..
.. bpo: 18844
.. date: 0131
.. nonce: fQsEdn
.. section: Library
random.choices() now has k as a keyword-only argument to improve the
readability of common cases and come into line with the signature used in
other languages.
..
.. bpo: 18893
.. date: 0130
.. nonce: osiX5c
.. section: Library
Fix invalid exception handling in Lib/ctypes/macholib/dyld.py. Patch by
Madison May.
..
.. bpo: 27611
.. date: 0129
.. nonce: A_ArH_
.. section: Library
Fixed support of default root window in the tkinter.tix module. Added the
master parameter in the DisplayStyle constructor.
..
.. bpo: 27348
.. date: 0128
.. nonce: tDx7Vw
.. section: Library
In the traceback module, restore the formatting of exception messages like
"Exception: None".  This fixes a regression introduced in 3.5a2.
..
.. bpo: 25651
.. date: 0127
.. nonce: 3UhyPo
.. section: Library
Allow false values to be used for msg parameter of subTest().
..
.. bpo: 27778
.. date: 0126
.. nonce: Yyo1aP
.. section: Library
Fix a memory leak in os.getrandom() when the getrandom() is interrupted by a
signal and a signal handler raises a Python exception.
..
.. bpo: 28200
.. date: 0125
.. nonce: 4IEbr7
.. section: Library
Fix memory leak on Windows in the os module (fix path_converter() function).
..
.. bpo: 25400
.. date: 0124
.. nonce: d9Qn0E
.. section: Library
RobotFileParser now correctly returns default values for crawl_delay and
request_rate.  Initial patch by Peter Wirtz.
..
.. bpo: 27932
.. date: 0123
.. nonce: mtgl-6
.. section: Library
Prevent memory leak in win32_ver().
..
.. bpo: 0
.. date: 0122
.. nonce: iPpjqX
.. section: Library
Fix UnboundLocalError in socket._sendfile_use_sendfile.
..
.. bpo: 28075
.. date: 0121
.. nonce: aLiUs9
.. section: Library
Check for ERROR_ACCESS_DENIED in Windows implementation of os.stat().  Patch
by Eryk Sun.
..
.. bpo: 22493
.. date: 0120
.. nonce: Mv_hZf
.. section: Library
Warning message emitted by using inline flags in the middle of regular
expression now contains a (truncated) regex pattern. Patch by Tim Graham.
..
.. bpo: 25270
.. date: 0119
.. nonce: jrZruM
.. section: Library
Prevent codecs.escape_encode() from raising SystemError when an empty
bytestring is passed.
..
.. bpo: 28181
.. date: 0118
.. nonce: NGc4Yv
.. section: Library
Get antigravity over HTTPS. Patch by Kaartic Sivaraam.
..
.. bpo: 25895
.. date: 0117
.. nonce: j92qoQ
.. section: Library
Enable WebSocket URL schemes in urllib.parse.urljoin. Patch by Gergely Imreh
and Markus Holtermann.
..
.. bpo: 28114
.. date: 0116
.. nonce: gmFXsA
.. section: Library
Fix a crash in parse_envlist() when env contains byte strings. Patch by Eryk
Sun.
..
.. bpo: 27599
.. date: 0115
.. nonce: itvm8T
.. section: Library
Fixed buffer overrun in binascii.b2a_qp() and binascii.a2b_qp().
..
.. bpo: 27906
.. date: 0114
.. nonce: TBBXrv
.. section: Library
Fix socket accept exhaustion during high TCP traffic. Patch by Kevin Conway.
..
.. bpo: 28174
.. date: 0113
.. nonce: CV1UdI
.. section: Library
Handle when SO_REUSEPORT isn't properly supported. Patch by Seth Michael
Larson.
..
.. bpo: 26654
.. date: 0112
.. nonce: XtzTE9
.. section: Library
Inspect functools.partial in asyncio.Handle.__repr__. Patch by iceboy.
..
.. bpo: 26909
.. date: 0111
.. nonce: ASiakT
.. section: Library
Fix slow pipes IO in asyncio. Patch by INADA Naoki.
..
.. bpo: 28176
.. date: 0110
.. nonce: sU8R6L
.. section: Library
Fix callbacks race in asyncio.SelectorLoop.sock_connect.
..
.. bpo: 27759
.. date: 0109
.. nonce: qpMDGq
.. section: Library
Fix selectors incorrectly retain invalid file descriptors. Patch by Mark
Williams.
..
.. bpo: 28325
.. date: 0108
.. nonce: wAHmnK
.. section: Library
Remove vestigial MacOS 9 macurl2path module and its tests.
..
.. bpo: 28368
.. date: 0107
.. nonce: n594X4
.. section: Library
Refuse monitoring processes if the child watcher has no loop attached. Patch
by Vincent Michel.
..
.. bpo: 28369
.. date: 0106
.. nonce: 8DTANe
.. section: Library
Raise RuntimeError when transport's FD is used with add_reader, add_writer,
etc.
..
.. bpo: 28370
.. date: 0105
.. nonce: 18jBuZ
.. section: Library
Speedup asyncio.StreamReader.readexactly. Patch by Коренберг Марк.
..
.. bpo: 28371
.. date: 0104
.. nonce: U9Zqdk
.. section: Library
Deprecate passing asyncio.Handles to run_in_executor.
..
.. bpo: 28372
.. date: 0103
.. nonce: njcIPk
.. section: Library
Fix asyncio to support formatting of non-python coroutines.
..
.. bpo: 28399
.. date: 0102
.. nonce: QKIqRX
.. section: Library
Remove UNIX socket from FS before binding. Patch by Коренберг Марк.
..
.. bpo: 27972
.. date: 0101
.. nonce: ZK-GFm
.. section: Library
Prohibit Tasks to await on themselves.
..
.. bpo: 24142
.. date: 0100
.. nonce: IrZnFs
.. section: Library
Reading a corrupt config file left configparser in an invalid state.
Original patch by Florian Höch.
..
.. bpo: 29581
.. date: 0099
.. nonce: gHCrxP
.. section: Library
ABCMeta.__new__ now accepts ``**kwargs``, allowing abstract base classes to
use keyword parameters in __init_subclass__. Patch by Nate Soares.
..
.. bpo: 25532
.. date: 0098
.. nonce: ey4Yez
.. section: Library
inspect.unwrap() will now only try to unwrap an object
sys.getrecursionlimit() times, to protect against objects which create a new
object on every attribute access.
..
.. bpo: 30177
.. date: 0097
.. nonce: JGIJNL
.. section: Library
path.resolve(strict=False) no longer cuts the path after the first element
not present in the filesystem.  Patch by Antoine Pietri.
..
.. bpo: 31294
.. date: 2017-09-07-20-49-09
.. nonce: WgI18w
.. section: Documentation
Fix incomplete code snippet in the ZeroMQSocketListener and
ZeroMQSocketHandler examples and adapt them to Python 3.
..
.. bpo: 21649
.. date: 2017-09-06-10-11-57
.. nonce: EUvqA9
.. section: Documentation
Add RFC 7525 and Mozilla server side TLS links to SSL documentation.
..
.. bpo: 31128
.. date: 2017-08-31
.. nonce: uoa3cr
.. section: Documentation
Allow the pydoc server to bind to arbitrary hostnames.
..
.. bpo: 30803
.. date: 2017-07-29-14-55-50
.. nonce: 6hutqQ
.. section: Documentation
Clarify doc on truth value testing. Original patch by Peter Thomassen.
..
.. bpo: 30176
.. date: 0060
.. nonce: VivmCg
.. section: Documentation
Add missing attribute related constants in curses documentation.
..
.. bpo: 30052
.. date: 0059
.. nonce: TpmpaF
.. section: Documentation
the link targets for :func:`bytes` and :func:`bytearray` are now their
respective type definitions, rather than the corresponding builtin function
entries. Use :ref:`bytes <func-bytes>` and :ref:`bytearray <func-bytearray>`
to reference the latter.
In order to ensure this and future cross-reference updates are applied
automatically, the daily documentation builds now disable the default output
caching features in Sphinx.
..
.. bpo: 26985
.. date: 0058
.. nonce: NB5_9S
.. section: Documentation
Add missing info of code object in inspect documentation.
..
.. bpo: 19824
.. date: 0057
.. nonce: We9an6
.. section: Documentation
Improve the documentation for, and links to, template strings by emphasizing
their utility for internationalization, and by clarifying some usage
constraints. (See also: bpo-20314, bpo-12518)
..
.. bpo: 28929
.. date: 0056
.. nonce: Md7kb0
.. section: Documentation
Link the documentation to its source file on GitHub.
..
.. bpo: 25008
.. date: 0055
.. nonce: CeIzyU
.. section: Documentation
Document smtpd.py as effectively deprecated and add a pointer to aiosmtpd, a
third-party asyncio-based replacement.
..
.. bpo: 26355
.. date: 0054
.. nonce: SDq_8Y
.. section: Documentation
Add canonical header link on each page to corresponding major version of the
documentation. Patch by Matthias Bussonnier.
..
.. bpo: 29349
.. date: 0053
.. nonce: PjSo-t
.. section: Documentation
Fix Python 2 syntax in code for building the documentation.
..
.. bpo: 23722
.. date: 0052
.. nonce: nFjY3C
.. section: Documentation
The data model reference and the porting section in the 3.6 What's New guide
now cover the additional ``__classcell__`` handling needed for custom
metaclasses to fully support :pep:`487` and zero-argument ``super()``.
..
.. bpo: 28513
.. date: 0051
.. nonce: L3joAz
.. section: Documentation
Documented command-line interface of zipfile.
..
.. bpo: 29639
.. date: 2017-09-08-15-59-07
.. nonce: yIZecp
.. section: Tests
test.support.HOST is now "localhost", a new HOSTv4 constant has been added
for your ``127.0.0.1`` needs, similar to the existing HOSTv6 constant.
..
.. bpo: 31320
.. date: 2017-09-05-14-23-35
.. nonce: JRDHx7
.. section: Tests
Silence traceback in test_ssl
..
.. bpo: 31346
.. date: 2017-09-04-16-21-18
.. nonce: xni1VR
.. section: Tests
Prefer PROTOCOL_TLS_CLIENT and PROTOCOL_TLS_SERVER protocols for SSLContext.
..
.. bpo: 25674
.. date: 2017-09-04-13-03-55
.. nonce: whVTXh
.. section: Tests
Remove sha256.tbs-internet.com ssl test
..
.. bpo: 30715
.. date: 2017-07-25-15-27-44
.. nonce: Sp7bTF
.. section: Tests
Address ALPN callback changes for OpenSSL 1.1.0f. The latest version behaves
like OpenSSL 1.0.2 and no longer aborts handshake.
..
.. bpo: 30822
.. date: 2017-07-20-14-29-54
.. nonce: X0wREo
.. section: Tests
regrtest: Exclude tzdata from regrtest --all. When running the test suite
using --use=all / -u all, exclude tzdata since it makes test_datetime too
slow (15-20 min on some buildbots) which then times out on some buildbots.
Fix also regrtest command line parser to allow passing -u extralargefile to
run test_zipfile64.
..
.. bpo: 30695
.. date: 2017-06-30-11-20-20
.. nonce: lo7FQX
.. section: Tests
Add the ``set_nomemory(start, stop)`` and ``remove_mem_hooks()`` functions to
the ``_testcapi`` module.
..
.. bpo: 30357
.. date: 0012
.. nonce: n4CPEa
.. section: Tests
test_thread: setUp() now uses support.threading_setup() and
support.threading_cleanup() to wait until threads complete to avoid random
side effects on following tests. Initial patch written by Grzegorz Grzywacz.
..
.. bpo: 30197
.. date: 0011
.. nonce: c5wRfu
.. section: Tests
Enhanced functions swap_attr() and swap_item() in the test.support module.
They now work when delete replaced attribute or item inside the with
statement.  The old value of the attribute or item (or None if it doesn't
exist) now will be assigned to the target of the "as" clause, if there is
one.
..
.. bpo: 24932
.. date: 0010
.. nonce: XLTzvR
.. section: Tests
Use proper command line parsing in _testembed
..
.. bpo: 28950
.. date: 0009
.. nonce: 1W8Glo
.. section: Tests
Disallow -j0 to be combined with -T/-l in regrtest command line arguments.
..
.. bpo: 28683
.. date: 0008
.. nonce: Fp-Hdq
.. section: Tests
Fix the tests that bind() a unix socket and raise PermissionError on Android
for a non-root user.
..
.. bpo: 26936
.. date: 0007
.. nonce: XSZSVS
.. section: Tests
Fix the test_socket failures on Android - getservbyname(),  getservbyport()
and getaddrinfo() are broken on some Android API levels.
..
.. bpo: 28666
.. date: 0006
.. nonce: RtTk-4
.. section: Tests
Now test.support.rmtree is able to remove unwritable or unreadable
directories.
..
.. bpo: 23839
.. date: 0005
.. nonce: zsT_L9
.. section: Tests
Various caches now are cleared before running every test file.
..
.. bpo: 26944
.. date: 0004
.. nonce: ChZ_BO
.. section: Tests
Fix test_posix for Android where 'id -G' is entirely wrong or missing the
effective gid.
..
.. bpo: 28409
.. date: 0003
.. nonce: Q2IlxJ
.. section: Tests
regrtest: fix the parser of command line arguments.
..
.. bpo: 28217
.. date: 0002
.. nonce: Y37OKV
.. section: Tests
Adds _testconsole module to test console input.
..
.. bpo: 26939
.. date: 0001
.. nonce: 7j_W5R
.. section: Tests
Add the support.setswitchinterval() function to fix test_functools hanging
on the Android armv7 qemu emulator.
..
.. bpo: 31354
.. date: 2017-09-08-11-48-11
.. nonce: 4f-VJK
.. section: Build
Allow ``--with-lto`` to be used on all builds, not just ``make profile-opt``.
..
.. bpo: 31370
.. date: 2017-09-06-23-14-08
.. nonce: -j4kN4
.. section: Build
Remove support for building --without-threads.
This option is not really useful anymore in the 21st century. Removing lots
of conditional paths allows us to simplify the code base, including in
difficult to maintain low-level internal code.
..
.. bpo: 31341
.. date: 2017-09-04-14-43-46
.. nonce: XLuZFk
.. section: Build
Per :pep:`11`, support for the IRIX operating system was removed.
..
.. bpo: 30854
.. date: 2017-07-05-16-54-59
.. nonce: sPADRI
.. section: Build
Fix compile error when compiling --without-threads. Patch by Masayuki
Yamamoto.
..
.. bpo: 30687
.. date: 0050
.. nonce: 8mqHnu
.. section: Build
Locate msbuild.exe on Windows when building rather than vcvarsall.bat
..
.. bpo: 20210
.. date: 0049
.. nonce: MN_n-r
.. section: Build
Support the *disabled* marker in Setup files. Extension modules listed after
this marker are not built at all, neither by the Makefile nor by setup.py.
..
.. bpo: 29941
.. date: 0048
.. nonce: ylh45A
.. section: Build
Add ``--with-assertions`` configure flag to explicitly enable C ``assert()``
checks. Defaults to off. ``--with-pydebug`` implies ``--with-assertions``.
..
.. bpo: 28787
.. date: 0047
.. nonce: vhH_6a
.. section: Build
Fix out-of-tree builds of Python when configured with ``--with--dtrace``.
..
.. bpo: 29243
.. date: 0046
.. nonce: WDK4hT
.. section: Build
Prevent unnecessary rebuilding of Python during ``make test``, ``make
install`` and some other make targets when configured with
``--enable-optimizations``.
..
.. bpo: 23404
.. date: 0045
.. nonce: PdYVWg
.. section: Build
Don't regenerate generated files based on file modification time anymore:
the action is now explicit. Replace ``make touch`` with ``make regen-all``.
..
.. bpo: 29643
.. date: 0044
.. nonce: 4WLIJQ
.. section: Build
Fix ``--enable-optimization`` didn't work.
..
.. bpo: 27593
.. date: 0043
.. nonce: v87xEr
.. section: Build
sys.version and the platform module python_build(), python_branch(), and
python_revision() functions now use git information rather than hg when
building from a repo.
..
.. bpo: 29572
.. date: 0042
.. nonce: iZ1XKK
.. section: Build
Update Windows build and OS X installers to use OpenSSL 1.0.2k.
..
.. bpo: 27659
.. date: 0041
.. nonce: i8UzRC
.. section: Build
Prohibit implicit C function declarations: use
``-Werror=implicit-function-declaration`` when possible (GCC and Clang,
but it depends on the compiler version). Patch written by Chi Hsuan Yen.
..
.. bpo: 29384
.. date: 0040
.. nonce: v3IqBE
.. section: Build
Remove old Be OS helper scripts.
..
.. bpo: 26851
.. date: 0039
.. nonce: R5243g
.. section: Build
Set Android compilation and link flags.
..
.. bpo: 28768
.. date: 0038
.. nonce: b9_a6E
.. section: Build
Fix implicit declaration of function _setmode. Patch by Masayuki Yamamoto
..
.. bpo: 29080
.. date: 0037
.. nonce: b3qLQT
.. section: Build
Removes hard dependency on hg.exe from PCBuild/build.bat
..
.. bpo: 23903
.. date: 0036
.. nonce: JXJ889
.. section: Build
Added missed names to PC/python3.def.
..
.. bpo: 28762
.. date: 0035
.. nonce: Ru0YN_
.. section: Build
lockf() is available on Android API level 24, but the F_LOCK macro is not
defined in android-ndk-r13.
..
.. bpo: 28538
.. date: 0034
.. nonce: FqtN7v
.. section: Build
Fix the compilation error that occurs because if_nameindex() is available on
Android API level 24, but the if_nameindex structure is not defined.
..
.. bpo: 20211
.. date: 0033
.. nonce: gpNptI
.. section: Build
Do not add the directory for installing C header files and the directory for
installing object code libraries to the cross compilation search paths.
Original patch by Thomas Petazzoni.
..
.. bpo: 28849
.. date: 0032
.. nonce: AzRRF5
.. section: Build
Do not define sys.implementation._multiarch on Android.
..
.. bpo: 10656
.. date: 0031
.. nonce: pR8FFU
.. section: Build
Fix out-of-tree building on AIX.  Patch by Tristan Carel and Michael
Haubenwallner.
..
.. bpo: 26359
.. date: 0030
.. nonce: CLz6qy
.. section: Build
Rename --with-optimiations to --enable-optimizations.
..
.. bpo: 28444
.. date: 0029
.. nonce: zkc9nT
.. section: Build
Fix missing extensions modules when cross compiling.
..
.. bpo: 28208
.. date: 0028
.. nonce: DtoP1i
.. section: Build
Update Windows build and OS X installers to use SQLite 3.14.2.
..
.. bpo: 28248
.. date: 0027
.. nonce: KY_-en
.. section: Build
Update Windows build and OS X installers to use OpenSSL 1.0.2j.
..
.. bpo: 21124
.. date: 0026
.. nonce: 1bbArU
.. section: Build
Fix building the _struct module on Cygwin by passing ``NULL`` instead of
``&PyType_Type`` to PyVarObject_HEAD_INIT.  Patch by Masayuki Yamamoto.
..
.. bpo: 13756
.. date: 0025
.. nonce: sslhpC
.. section: Build
Fix building extensions modules on Cygwin.  Patch by Roumen Petrov, based on
original patch by Jason Tishler.
..
.. bpo: 21085
.. date: 0024
.. nonce: 2VvyUF
.. section: Build
Add configure check for siginfo_t.si_band, which Cygwin does not provide.
Patch by Masayuki Yamamoto with review and rebase by Erik Bray.
..
.. bpo: 28258
.. date: 0023
.. nonce: iKtAHd
.. section: Build
Fixed build with Estonian locale (python-config and distclean targets in
Makefile).  Patch by Arfrever Frehtes Taifersar Arahesis.
..
.. bpo: 26661
.. date: 0022
.. nonce: Z_HNbs
.. section: Build
setup.py now detects system libffi with multiarch wrapper.
..
.. bpo: 27979
.. date: 0021
.. nonce: fR0KgM
.. section: Build
A full copy of libffi is no longer bundled for use when building _ctypes on
non-OSX UNIX platforms.  An installed copy of libffi is now required when
building _ctypes on such platforms.
..
.. bpo: 15819
.. date: 0020
.. nonce: QVDr3E
.. section: Build
Remove redundant include search directory option for building outside the
source tree.
..
.. bpo: 28676
.. date: 0019
.. nonce: Wxf6Ds
.. section: Build
Prevent missing 'getentropy' declaration warning on macOS. Patch by Gareth
Rees.
..
.. bpo: 31392
.. date: 2017-09-07-20-09-04
.. nonce: h92bWF
.. section: Windows
Update Windows build to use OpenSSL 1.1.0f
..
.. bpo: 30389
.. date: 2017-09-06-17-14-54
.. nonce: 9Dizrx
.. section: Windows
Adds detection of Visual Studio 2017 to distutils on Windows.
..
.. bpo: 31358
.. date: 2017-09-05-19-46-52
.. nonce: n1Fjxc
.. section: Windows
zlib is no longer bundled in the CPython source, instead it is downloaded on
demand just like bz2, lzma, OpenSSL, Tcl/Tk, and SQLite.
..
.. bpo: 31340
.. date: 2017-09-04-13-19-05
.. nonce: MbkzLi
.. section: Windows
Change to building with MSVC v141 (included with Visual Studio 2017)
..
.. bpo: 30581
.. date: 2017-08-04-10-05-19
.. nonce: OQhR7l
.. section: Windows
os.cpu_count() now returns the correct number of processors on Windows when
the number of logical processors is greater than 64.
..
.. bpo: 30916
.. date: 2017-07-15-00-40-12
.. nonce: BpCrro
.. section: Windows
Pre-build OpenSSL, Tcl and Tk and include the binaries in the build.
..
.. bpo: 30731
.. date: 2017-07-13-11-22-53
.. nonce: nmMDwI
.. section: Windows
Add a missing xmlns to python.manifest so that it matches the schema.
..
.. bpo: 30291
.. date: 2017-06-28-03-20-48
.. nonce: zBpOl6
.. section: Windows
Allow requiring 64-bit interpreters from py.exe using -64 suffix.
Contributed by Steve (Gadget) Barnes.
..
.. bpo: 30362
.. date: 2017-06-28-03-08-22
.. nonce: XxeVMB
.. section: Windows
Adds list options (-0, -0p) to py.exe launcher. Contributed by Steve Barnes.
..
.. bpo: 23451
.. date: 2017-06-27-07-04-06
.. nonce: bl_QOB
.. section: Windows
Fix socket deprecation warnings in socketmodule.c. Patch by Segev Finer.
..
.. bpo: 30450
.. date: 0088
.. nonce: qsaK8y
.. section: Windows
The build process on Windows no longer depends on Subversion, instead
pulling external code from GitHub via a Python script.  If Python 3.6 is not
found on the system (via ``py -3.6``), NuGet is used to download a copy of
32-bit Python.
..
.. bpo: 29579
.. date: 0087
.. nonce: 07B-FQ
.. section: Windows
Removes readme.txt from the installer.
..
.. bpo: 25778
.. date: 0086
.. nonce: 8uKJ82
.. section: Windows
winreg does not truncate string correctly (Patch by Eryk Sun)
..
.. bpo: 28896
.. date: 0085
.. nonce: qOcBBL
.. section: Windows
Deprecate WindowsRegistryFinder and disable it by default
..
.. bpo: 28522
.. date: 0084
.. nonce: XHMQa7
.. section: Windows
Fixes mishandled buffer reallocation in getpathp.c
..
.. bpo: 28402
.. date: 0083
.. nonce: v9zETJ
.. section: Windows
Adds signed catalog files for stdlib on Windows.
..
.. bpo: 28333
.. date: 0082
.. nonce: KnpeO4
.. section: Windows
Enables Unicode for ps1/ps2 and input() prompts. (Patch by Eryk Sun)
..
.. bpo: 28251
.. date: 0081
.. nonce: tR_AFs
.. section: Windows
Improvements to help manuals on Windows.
..
.. bpo: 28110
.. date: 0080
.. nonce: cnkP5F
.. section: Windows
launcher.msi has different product codes between 32-bit and 64-bit
..
.. bpo: 28161
.. date: 0079
.. nonce: hF91LI
.. section: Windows
Opening CON for write access fails
..
.. bpo: 28162
.. date: 0078
.. nonce: 3FHPVD
.. section: Windows
WindowsConsoleIO readall() fails if first line starts with Ctrl+Z
..
.. bpo: 28163
.. date: 0077
.. nonce: -DUgJw
.. section: Windows
WindowsConsoleIO fileno() passes wrong flags to _open_osfhandle
..
.. bpo: 28164
.. date: 0076
.. nonce: 5MfN0J
.. section: Windows
_PyIO_get_console_type fails for various paths
..
.. bpo: 28137
.. date: 0075
.. nonce: C1uvzY
.. section: Windows
Renames Windows path file to ._pth
..
.. bpo: 28138
.. date: 0074
.. nonce: pNdv64
.. section: Windows
Windows ._pth file should allow import site
..
.. bpo: 31493
.. date: 2017-09-16-23-43-39
.. nonce: nmHMCR
.. section: IDLE
IDLE code context -- fix code update and font update timers.
Canceling timers prevents a warning message when test_idle completes.
..
.. bpo: 31488
.. date: 2017-09-16-01-21-20
.. nonce: 0rtXIT
.. section: IDLE
IDLE - Update non-key options in former extension classes. When applying
configdialog changes, call .reload for each feature class. Change ParenMatch
so updated options affect existing instances attached to existing editor
windows.
..
.. bpo: 31477
.. date: 2017-09-15-12-38-47
.. nonce: n__6sa
.. section: IDLE
IDLE - Improve rstrip entry in doc. Strip trailing whitespace strips more
than blank spaces.  Multiline string literals are not skipped.
..
.. bpo: 31480
.. date: 2017-09-14-17-53-53
.. nonce: 4WJ0pl
.. section: IDLE
IDLE - make tests pass with zzdummy extension disabled by default.
..
.. bpo: 31421
.. date: 2017-09-12-08-38-27
.. nonce: mYfQNq
.. section: IDLE
Document how IDLE runs tkinter programs. IDLE calls tcl/tk update in the
background in order to make live
interaction and experimentation with tkinter applications much easier.
..
.. bpo: 31414
.. date: 2017-09-11-15-46-05
.. nonce: wiepgK
.. section: IDLE
IDLE -- fix tk entry box tests by deleting first. Adding to an int entry is
not the same as deleting and inserting because int('') will fail.
..
.. bpo: 31051
.. date: 2017-08-30-00-06-58
.. nonce: 50Jp_Q
.. section: IDLE
Rearrange IDLE configdialog GenPage into Window, Editor, and Help sections.
..
.. bpo: 30617
.. date: 2017-08-27-16-49-36
.. nonce: UHnswr
.. section: IDLE
IDLE - Add docstrings and tests for outwin subclass of editor.
Move some data and functions from the class to module level. Patch by Cheryl
Sabella.
..
.. bpo: 31287
.. date: 2017-08-27-15-31-33
.. nonce: aZERfI
.. section: IDLE
IDLE - Do not modify tkinter.message in test_configdialog.
..
.. bpo: 27099
.. date: 2017-08-24-13-48-16
.. nonce: rENefC
.. section: IDLE
Convert IDLE's built-in 'extensions' to regular features.
About 10 IDLE features were implemented as supposedly optional extensions.
Their different behavior could be confusing or worse for users and not good
for maintenance.  Hence the conversion.
The main difference for users is that user configurable key bindings for
builtin features are now handled uniformly.  Now, editing a binding in a
keyset only affects its value in the keyset.  All bindings are defined
together in the system-specific default keysets in config-extensions.def.
All custom keysets are saved as a whole in config-extension.cfg.  All take
effect as soon as one clicks Apply or Ok.
The affected events are '<<force-open-completions>>', '<<expand-word>>',
'<<force-open-calltip>>', '<<flash-paren>>', '<<format-paragraph>>',
'<<run-module>>', '<<check-module>>', and '<<zoom-height>>'.  Any (global)
customizations made before 3.6.3 will not affect their keyset-specific
customization after 3.6.3. and vice versa.
Initial patch by Charles Wohlganger.
..
.. bpo: 31206
.. date: 2017-08-18-14-13-42
.. nonce: F1-tKK
.. section: IDLE
IDLE: Factor HighPage(Frame) class from ConfigDialog. Patch by Cheryl
Sabella.
..
.. bpo: 31001
.. date: 2017-08-17-15-00-20
.. nonce: KLxYHC
.. section: IDLE
Add tests for configdialog highlight tab.  Patch by Cheryl Sabella.
..
.. bpo: 31205
.. date: 2017-08-15-12-58-23
.. nonce: iuziZ5
.. section: IDLE
IDLE: Factor KeysPage(Frame) class from ConfigDialog.  The slightly modified
tests continue to pass.  Patch by Cheryl Sabella.
..
.. bpo: 31130
.. date: 2017-08-07-14-02-56
.. nonce: FbsC7f
.. section: IDLE
IDLE -- stop leaks in test_configdialog. Initial patch by Victor Stinner.
..
.. bpo: 31002
.. date: 2017-08-03-17-54-02
.. nonce: kUSgTE
.. section: IDLE
Add tests for configdialog keys tab. Patch by Cheryl Sabella.
..
.. bpo: 19903
.. date: 2017-08-03-14-08-42
.. nonce: sqE1FS
.. section: IDLE
IDLE: Calltips use ``inspect.signature`` instead of ``inspect.getfullargspec``.
This improves calltips for builtins converted to use Argument Clinic. Patch
by Louie Lu.
..
.. bpo: 31083
.. date: 2017-07-31-23-20-51
.. nonce: 991FXm
.. section: IDLE
IDLE - Add an outline of a TabPage class in configdialog. Update existing
classes to match outline. Initial patch by Cheryl Sabella.
..
.. bpo: 31050
.. date: 2017-07-30-17-39-59
.. nonce: AXR3kP
.. section: IDLE
Factor GenPage(Frame) class from ConfigDialog. The slightly modified tests
continue to pass. Patch by Cheryl Sabella.
..
.. bpo: 31004
.. date: 2017-07-30-01-00-58
.. nonce: m8cc1t
.. section: IDLE
IDLE - Factor FontPage(Frame) class from ConfigDialog.
Slightly modified tests continue to pass. Fix General tests. Patch mostly by
Cheryl Sabella.
..
.. bpo: 30781
.. date: 2017-07-28-18-59-06
.. nonce: ud5m18
.. section: IDLE
IDLE - Use ttk widgets in ConfigDialog. Patches by Terry Jan Reedy and
Cheryl Sabella.
..
.. bpo: 31060
.. date: 2017-07-27-14-48-42
.. nonce: GdY_VY
.. section: IDLE
IDLE - Finish rearranging methods of ConfigDialog Grouping methods
pertaining to each tab and the buttons will aid writing tests and improving
the tabs and will enable splitting the groups into classes.
..
.. bpo: 30853
.. date: 2017-07-27-10-01-14
.. nonce: enPvvc
.. section: IDLE
IDLE -- Factor a VarTrace class out of ConfigDialog.
Instance tracers manages pairs consisting of a tk variable and a callback
function.  When tracing is turned on, setting the variable calls the
function.  Test coverage for the new class is 100%.
..
.. bpo: 31003
.. date: 2017-07-25-01-28-35
.. nonce: bYINVH
.. section: IDLE
IDLE: Add more tests for General tab.
..
.. bpo: 30993
.. date: 2017-07-22-18-08-41
.. nonce: 34vJkB
.. section: IDLE
IDLE - Improve configdialog font page and tests.
In configdialog: Document causal pathways in create_font_tab docstring.
Simplify some attribute names. Move set_samples calls to var_changed_font
(idea from Cheryl Sabella).  Move related functions to positions after the
create widgets function.
In test_configdialog: Fix test_font_set so not order dependent.  Fix renamed
test_indent_scale so it tests the widget.  Adjust tests for movement of
set_samples call.  Add tests for load functions.  Put all font tests in one
class and tab indent tests in another.  Except for two lines, these tests
completely cover the related functions.
..
.. bpo: 30981
.. date: 2017-07-21-01-55-14
.. nonce: ZFvQPt
.. section: IDLE
IDLE -- Add more configdialog font page tests.
..
.. bpo: 28523
.. date: 2017-07-21-00-54-52
.. nonce: OPcqYJ
.. section: IDLE
IDLE: replace 'colour' with 'color' in configdialog.
..
.. bpo: 30917
.. date: 2017-07-17-23-35-57
.. nonce: hSiuuO
.. section: IDLE
Add tests for idlelib.config.IdleConf. Increase coverage from 46% to 96%.
Patch by Louie Lu.
..
.. bpo: 30934
.. date: 2017-07-15-22-26-57
.. nonce: BanuSB
.. section: IDLE
Document coverage details for idlelib tests.
Add section to idlelib/idle-test/README.txt.
Include check that branches are taken both ways.
Exclude IDLE-specific code that does not run during unit tests.
..
.. bpo: 30913
.. date: 2017-07-13-23-07-33
.. nonce: aezn_e
.. section: IDLE
IDLE: Document ConfigDialog tk Vars, methods, and widgets in docstrings This
will facilitate improving the dialog and splitting up the class. Original
patch by Cheryl Sabella.
..
.. bpo: 30899
.. date: 2017-07-11-02-26-17
.. nonce: SQmVO8
.. section: IDLE
IDLE: Add tests for ConfigParser subclasses in config. Patch by Louie Lu.
..
.. bpo: 30881
.. date: 2017-07-11-02-21-42
.. nonce: 4KAq_9
.. section: IDLE
IDLE: Add docstrings to browser.py. Patch by Cheryl Sabella.
..
.. bpo: 30851
.. date: 2017-07-09-23-53-00
.. nonce: AHXBYa
.. section: IDLE
IDLE: Remove unused variables in configdialog.  One is a duplicate, one is
set but cannot be altered by users. Patch by Cheryl Sabella.
..
.. bpo: 30870
.. date: 2017-07-08-17-57-04
.. nonce: IcR2pf
.. section: IDLE
IDLE: In Settings dialog, select font with Up, Down keys as well as mouse.
Initial patch by Louie Lu.
..
.. bpo: 8231
.. date: 2017-07-07-21-10-55
.. nonce: yEge3L
.. section: IDLE
IDLE: call config.IdleConf.GetUserCfgDir only once.
..
.. bpo: 30779
.. date: 2017-07-07-20-26-37
.. nonce: 8KXEXN
.. section: IDLE
IDLE: Factor ConfigChanges class from configdialog, put in config; test. *
In config, put dump test code in a function; run it and unittest in   'if
__name__ == '__main__'. * Add class config.ConfigChanges based on
changes_class_v4.py on bpo issue. * Add class test_config.ChangesTest,
partly using configdialog_tests_v1.py. * Revise configdialog to use
ConfigChanges; see tracker msg297804. * Revise test_configdialog to match
configdialog changes. * Remove configdialog functions unused or moved to
ConfigChanges. Cheryl Sabella contributed parts of the patch.
..
.. bpo: 30777
.. date: 2017-07-04-22-45-46
.. nonce: uxzlMB
.. section: IDLE
IDLE: configdialog - Add docstrings and fix comments. Patch by Cheryl
Sabella.
..
.. bpo: 30495
.. date: 2017-06-29-18-23-06
.. nonce: qIWgc4
.. section: IDLE
IDLE: Improve textview with docstrings, PEP8 names, and more tests. Patch by
Cheryl Sabella.
..
.. bpo: 30723
.. date: 2017-06-27-19-05-40
.. nonce: rQh06y
.. section: IDLE
IDLE: Make several improvements to parenmatch. Add 'parens' style to
highlight both opener and closer. Make 'default' style, which is not
default, a synonym for 'opener'. Make time-delay work the same with all
styles. Add help for config dialog extensions tab, including help for
parenmatch. Add new tests.  Original patch by Charles Wohlganger.
..
.. bpo: 30674
.. date: 2017-06-27-01-40-34
.. nonce: ppK_q8
.. section: IDLE
IDLE: add docstrings to grep module. Patch by Cheryl Sabella
..
.. bpo: 21519
.. date: 2017-06-27-00-29-56
.. nonce: fTj9T0
.. section: IDLE
IDLE's basic custom key entry dialog now detects duplicates properly.
Original patch by Saimadhav Heblikar.
..
.. bpo: 29910
.. date: 2017-06-26-22-45-27
.. nonce: mqHh7u
.. section: IDLE
IDLE no longer deletes a character after commenting out a region by a key
shortcut.  Add ``return 'break'`` for this and other potential conflicts
between IDLE and default key bindings.
..
.. bpo: 30728
.. date: 2017-06-26-15-47-13
.. nonce: qH4TGL
.. section: IDLE
Review and change idlelib.configdialog names. Lowercase method and attribute
names. Replace 'colour' with 'color', expand overly cryptic names, delete
unneeded underscores. Replace ``import *`` with specific imports. Patches by
Cheryl Sabella.
..
.. bpo: 6739
.. date: 2017-06-26-00-28-59
.. nonce: x5MfhB
.. section: IDLE
IDLE: Verify user-entered key sequences by trying to bind them with tk. Add
tests for all 3 validation functions. Original patch by G Polo.  Tests added
by Cheryl Sabella.
..
.. bpo: 15786
.. date: 0096
.. nonce: _XRbaR
.. section: IDLE
Fix several problems with IDLE's autocompletion box. The following should
now work: clicking on selection box items; using the scrollbar; selecting an
item by hitting Return. Hangs on MacOSX should no longer happen. Patch by
Louie Lu.
..
.. bpo: 25514
.. date: 0095
.. nonce: 882pXa
.. section: IDLE
Add doc subsubsection about IDLE failure to start. Popup no-connection
message directs users to this section.
..
.. bpo: 30642
.. date: 0094
.. nonce: 3Zujzt
.. section: IDLE
Fix reference leaks in IDLE tests. Patches by Louie Lu and Terry Jan Reedy.
..
.. bpo: 30495
.. date: 0093
.. nonce: I3i5vL
.. section: IDLE
Add docstrings for textview.py and use PEP8 names. Patches by Cheryl Sabella
and Terry Jan Reedy.
..
.. bpo: 30290
.. date: 0092
.. nonce: fZ3kod
.. section: IDLE
Help-about: use pep8 names and add tests. Increase coverage to 100%. Patches
by Louie Lu, Cheryl Sabella, and Terry Jan Reedy.
..
.. bpo: 30303
.. date: 0091
.. nonce: 2L2F-4
.. section: IDLE
Add _utest option to textview; add new tests. Increase coverage to 100%.
Patches by Louie Lu and Terry Jan Reedy.
..
.. bpo: 29071
.. date: 0090
.. nonce: FCOpJn
.. section: IDLE
IDLE colors f-string prefixes (but not invalid ur prefixes).
..
.. bpo: 28572
.. date: 0089
.. nonce: 1_duKY
.. section: IDLE
Add 10% to coverage of IDLE's test_configdialog. Update and augment
description of the configuration system.
..
.. bpo: 30983
.. date: 2017-08-18-17-19-23
.. nonce: ggGz9z
.. section: Tools/Demos
gdb integration commands (py-bt, etc.) work on optimized shared builds now,
too.  :pep:`523` introduced _PyEval_EvalFrameDefault which inlines
PyEval_EvalFrameEx on non-debug shared builds.  This broke the ability to
use py-bt, py-up, and a few other Python-specific gdb integrations. The
problem is fixed by only looking for _PyEval_EvalFrameDefault frames in
python-gdb.py.  Original patch by Bruno "Polaco" Penteado.
..
.. bpo: 29748
.. date: 0018
.. nonce: 6pV6s9
.. section: Tools/Demos
Added the slice index converter in Argument Clinic.
..
.. bpo: 24037
.. date: 0017
.. nonce: KPFC7o
.. section: Tools/Demos
Argument Clinic now uses the converter ``bool(accept={int})`` rather than
``int`` for semantical booleans.  This avoids repeating the default value for
Python and C and will help in converting to ``bool`` in future.
..
.. bpo: 29367
.. date: 0016
.. nonce: 4dOKL0
.. section: Tools/Demos
python-gdb.py now supports also ``method-wrapper`` (``wrapperobject``)
objects.
..
.. bpo: 28023
.. date: 0015
.. nonce: 4gzSGp
.. section: Tools/Demos
Fix python-gdb.py didn't support new dict implementation.
..
.. bpo: 15369
.. date: 0014
.. nonce: bdZ3n-
.. section: Tools/Demos
The pybench and pystone microbenchmark have been removed from Tools. Please
use the new Python benchmark suite https://github.com/python/pyperformance
which is more reliable and includes a portable version of pybench working on
Python 2 and Python 3.
..
.. bpo: 28102
.. date: 0013
.. nonce: 5fKaek
.. section: Tools/Demos
The zipfile module CLI now prints usage to stderr. Patch by Stephen J.
Turnbull.
..
.. bpo: 31338
.. date: 2017-09-05-17-51-12
.. nonce: LjA43Y
.. section: C API
Added the ``Py_UNREACHABLE()`` macro for code paths which are never expected
to be reached.  This and a few other useful macros are now documented in the
C API manual.
..
.. bpo: 30832
.. date: 2017-07-03-17-25-40
.. nonce: PcTAEP
.. section: C API
Remove own implementation for thread-local storage.
CPython has provided the own implementation for thread-local storage (TLS)
on Python/thread.c, it's used in the case which a platform has not supplied
native TLS.  However, currently all supported platforms (Windows and
pthreads) have provided native TLS and defined the Py_HAVE_NATIVE_TLS macro
with unconditional in any case.
..
.. bpo: 30708
.. date: 0073
.. nonce: np-l1j
.. section: C API
PyUnicode_AsWideCharString() now raises a ValueError if the second argument
is NULL and the wchar_t\* string contains null characters.
..
.. bpo: 16500
.. date: 0072
.. nonce: lRpooa
.. section: C API
Deprecate PyOS_AfterFork() and add PyOS_BeforeFork(),
PyOS_AfterFork_Parent() and PyOS_AfterFork_Child().
..
.. bpo: 6532
.. date: 0071
.. nonce: qcH6k1
.. section: C API
The type of results of PyThread_start_new_thread() and
PyThread_get_thread_ident(), and the id parameter of
PyThreadState_SetAsyncExc() changed from "long" to "unsigned long".
..
.. bpo: 27867
.. date: 0070
.. nonce: J-8CGo
.. section: C API
Function PySlice_GetIndicesEx() is deprecated and replaced with a macro if
Py_LIMITED_API is not set or set to the value between 0x03050400 and
0x03060000 (not including) or 0x03060100 or higher.  Added functions
PySlice_Unpack() and PySlice_AdjustIndices().
..
.. bpo: 29083
.. date: 0069
.. nonce: tGTjr_
.. section: C API
Fixed the declaration of some public API functions. PyArg_VaParse() and
PyArg_VaParseTupleAndKeywords() were not available in limited API.
PyArg_ValidateKeywordArguments(), PyArg_UnpackTuple() and Py_BuildValue()
were not available in limited API of version < 3.3 when PY_SSIZE_T_CLEAN is
defined.
..
.. bpo: 28769
.. date: 0068
.. nonce: Ecmtn8
.. section: C API
The result of PyUnicode_AsUTF8AndSize() and PyUnicode_AsUTF8() is now of
type ``const char *`` rather of ``char *``.
..
.. bpo: 29058
.. date: 0067
.. nonce: 0wNVP8
.. section: C API
All stable API extensions added after Python 3.2 are now available only when
Py_LIMITED_API is set to the PY_VERSION_HEX value of the minimum Python
version supporting this API.
..
.. bpo: 28822
.. date: 0066
.. nonce: gMqwvb
.. section: C API
The index parameters *start* and *end* of PyUnicode_FindChar() are now
adjusted to behave like ``str[start:end]``.
..
.. bpo: 28808
.. date: 0065
.. nonce: A03X6r
.. section: C API
PyUnicode_CompareWithASCIIString() now never raises exceptions.
..
.. bpo: 28761
.. date: 0064
.. nonce: iOgCoX
.. section: C API
The fields name and doc of structures PyMemberDef, PyGetSetDef,
PyStructSequence_Field, PyStructSequence_Desc, and wrapperbase are now of
type ``const char *`` rather of ``char *``.
..
.. bpo: 28748
.. date: 0063
.. nonce: AMgb_G
.. section: C API
Private variable _Py_PackageContext is now of type ``const char *`` rather
of ``char *``.
..
.. bpo: 19569
.. date: 0062
.. nonce: IPke0J
.. section: C API
Compiler warnings are now emitted if use most of deprecated functions.
..
.. bpo: 28426
.. date: 0061
.. nonce: zPwvbI
.. section: C API
Deprecated undocumented functions PyUnicode_AsEncodedObject(),
PyUnicode_AsDecodedObject(), PyUnicode_AsDecodedUnicode() and
PyUnicode_AsEncodedUnicode().

.. bpo: 23571
.. date: 8990
.. nonce: GTkAkq
.. release date: 2015-03-09
.. section: Core and Builtins
PyObject_Call() and PyCFunction_Call() now raise a SystemError if a function
returns a result and raises an exception. The SystemError is chained to the
previous exception.
..
.. bpo: 22524
.. date: 8989
.. nonce: Ks6_2x
.. section: Library
New os.scandir() function, part of the :pep:`471`: "os.scandir() function -- a
better and faster directory iterator". Patch written by Ben Hoyt.
..
.. bpo: 23103
.. date: 8988
.. nonce: I3RLIV
.. section: Library
Reduced the memory consumption of IPv4Address and IPv6Address.
..
.. bpo: 21793
.. date: 8987
.. nonce: GQtYMM
.. section: Library
BaseHTTPRequestHandler again logs response code as numeric, not as
stringified enum.  Patch by Demian Brecht.
..
.. bpo: 23476
.. date: 8986
.. nonce: 82QV9I
.. section: Library
In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST flag on
certificate stores when it is available.
..
.. bpo: 23576
.. date: 8985
.. nonce: 98F-PP
.. section: Library
Avoid stalling in SSL reads when EOF has been reached in the SSL layer but
the underlying connection hasn't been closed.
..
.. bpo: 23504
.. date: 8984
.. nonce: o31h5I
.. section: Library
Added an __all__ to the types module.
..
.. bpo: 23563
.. date: 8983
.. nonce: iQB-ba
.. section: Library
Optimized utility functions in urllib.parse.
..
.. bpo: 7830
.. date: 8982
.. nonce: irvPdC
.. section: Library
Flatten nested functools.partial.
..
.. bpo: 20204
.. date: 8981
.. nonce: DorA4b
.. section: Library
Added the __module__ attribute to _tkinter classes.
..
.. bpo: 19980
.. date: 8980
.. nonce: whwzL_
.. section: Library
Improved help() for non-recognized strings.  help('') now shows the help on
str.  help('help') now shows the help on help(). Original patch by Mark
Lawrence.
..
.. bpo: 23521
.. date: 8979
.. nonce: HvwFfd
.. section: Library
Corrected pure python implementation of timedelta division.
Eliminated OverflowError from ``timedelta * float`` for some floats;
Corrected rounding in timedelta true division.
..
.. bpo: 21619
.. date: 8978
.. nonce: uL0SZh
.. section: Library
Popen objects no longer leave a zombie after exit in the with statement if
the pipe was broken.  Patch by Martin Panter.
..
.. bpo: 22936
.. date: 8977
.. nonce: JrhGYd
.. section: Library
Make it possible to show local variables in tracebacks for both the
traceback module and unittest.
..
.. bpo: 15955
.. date: 8976
.. nonce: _8nYPy
.. section: Library
Add an option to limit the output size in bz2.decompress(). Patch by
Nikolaus Rath.
..
.. bpo: 6639
.. date: 8975
.. nonce: rmjUmG
.. section: Library
Module-level turtle functions no longer raise TclError after closing the
window.
..
.. bpo: 814253
.. date: 8974
.. nonce: icZb-I
.. section: Library
Group references and conditional group references now work in lookbehind
assertions in regular expressions. (See also: bpo-9179)
..
.. bpo: 23215
.. date: 8973
.. nonce: VHVSVX
.. section: Library
Multibyte codecs with custom error handlers that ignores errors consumed too
much memory and raised SystemError or MemoryError. Original patch by Aleksi
Torhamo.
..
.. bpo: 5700
.. date: 8972
.. nonce: iA5yzL
.. section: Library
io.FileIO() called flush() after closing the file. flush() was not called in
close() if closefd=False.
..
.. bpo: 23374
.. date: 8971
.. nonce: 8A9LuZ
.. section: Library
Fixed pydoc failure with non-ASCII files when stdout encoding differs from
file system encoding (e.g. on Mac OS).
..
.. bpo: 23481
.. date: 8970
.. nonce: ZWwliG
.. section: Library
Remove RC4 from the SSL module's default cipher list.
..
.. bpo: 21548
.. date: 8969
.. nonce: CmO_Yh
.. section: Library
Fix pydoc.synopsis() and pydoc.apropos() on modules with empty docstrings.
..
.. bpo: 22885
.. date: 8968
.. nonce: p8FnYk
.. section: Library
Fixed arbitrary code execution vulnerability in the dbm.dumb module.
Original patch by Claudiu Popa.
..
.. bpo: 23239
.. date: 8967
.. nonce: PGUq7T
.. section: Library
ssl.match_hostname() now supports matching of IP addresses.
..
.. bpo: 23146
.. date: 8966
.. nonce: PW-O3u
.. section: Library
Fix mishandling of absolute Windows paths with forward slashes in pathlib.
..
.. bpo: 23096
.. date: 8965
.. nonce: Ftrmf3
.. section: Library
Pickle representation of floats with protocol 0 now is the same for both
Python and C implementations.
..
.. bpo: 19105
.. date: 8964
.. nonce: ZK07Ff
.. section: Library
pprint now more efficiently uses free space at the right.
..
.. bpo: 14910
.. date: 8963
.. nonce: zueIhP
.. section: Library
Add allow_abbrev parameter to argparse.ArgumentParser. Patch by Jonathan
Paugh, Steven Bethard, paul j3 and Daniel Eriksson.
..
.. bpo: 21717
.. date: 8962
.. nonce: Knut81
.. section: Library
tarfile.open() now supports 'x' (exclusive creation) mode.
..
.. bpo: 23344
.. date: 8961
.. nonce: ieu8C1
.. section: Library
marshal.dumps() is now 20-25% faster on average.
..
.. bpo: 20416
.. date: 8960
.. nonce: cwEgkL
.. section: Library
marshal.dumps() with protocols 3 and 4 is now 40-50% faster on average.
..
.. bpo: 23421
.. date: 8959
.. nonce: eckzoV
.. section: Library
Fixed compression in tarfile CLI.  Patch by wdv4758h.
..
.. bpo: 23367
.. date: 8958
.. nonce: kHnFiz
.. section: Library
Fix possible overflows in the unicodedata module.
..
.. bpo: 23361
.. date: 8957
.. nonce: I_w0-z
.. section: Library
Fix possible overflow in Windows subprocess creation code.
..
.. bpo: 0
.. date: 8956
.. nonce: sfmjTs
.. section: Library
logging.handlers.QueueListener now takes a respect_handler_level keyword
argument which, if set to True, will pass messages to handlers taking
handler levels into account.
..
.. bpo: 19705
.. date: 8955
.. nonce: WLzTRV
.. section: Library
turtledemo now has a visual sorting algorithm demo.  Original patch from
Jason Yeo.
..
.. bpo: 23801
.. date: 8954
.. nonce: jyJK3z
.. section: Library
Fix issue where cgi.FieldStorage did not always ignore the entire preamble
to a multipart body.
..
.. bpo: 23445
.. date: 8953
.. nonce: 7fmkYO
.. section: Build
pydebug builds now use "gcc -Og" where possible, to make the resulting
executable faster.
..
.. bpo: 23686
.. date: 8952
.. nonce: B7jDXY
.. section: Build
Update OS X 10.5 installer build to use OpenSSL 1.0.2a.
..
.. bpo: 20204
.. date: 8951
.. nonce: M_jcNK
.. section: C API
Deprecation warning is now raised for builtin types without the __module__
attribute.
..
.. bpo: 23465
.. date: 8950
.. nonce: qBauCy
.. section: Windows
Implement :pep:`486` - Make the Python Launcher aware of virtual environments.
Patch by Paul Moore.
..
.. bpo: 23437
.. date: 8949
.. nonce: ro9X8r
.. section: Windows
Make user scripts directory versioned on Windows. Patch by Paul Moore.

.. bpo: 28128
.. date: 9744
.. nonce: Lc2sFu
.. release date: 2016-10-31
.. section: Core and Builtins
Deprecation warning for invalid str and byte escape sequences now prints
better information about where the error occurs. Patch by Serhiy Storchaka
and Eric Smith.
..
.. bpo: 28509
.. date: 9743
.. nonce: _Fa4Uq
.. section: Core and Builtins
dict.update() no longer allocate unnecessary large memory.
..
.. bpo: 28426
.. date: 9742
.. nonce: E_quyK
.. section: Core and Builtins
Fixed potential crash in PyUnicode_AsDecodedObject() in debug build.
..
.. bpo: 28517
.. date: 9741
.. nonce: ExPkm9
.. section: Core and Builtins
Fixed of-by-one error in the peephole optimizer that caused keeping
unreachable code.
..
.. bpo: 28214
.. date: 9740
.. nonce: 6ECJox
.. section: Core and Builtins
Improved exception reporting for problematic __set_name__ attributes.
..
.. bpo: 23782
.. date: 9739
.. nonce: lonDzj
.. section: Core and Builtins
Fixed possible memory leak in _PyTraceback_Add() and exception loss in
PyTraceBack_Here().
..
.. bpo: 28471
.. date: 9738
.. nonce: Vd5pv7
.. section: Core and Builtins
Fix "Python memory allocator called without holding the GIL" crash in
socket.setblocking.
..
.. bpo: 27517
.. date: 9737
.. nonce: 1CYM8A
.. section: Library
LZMA compressor and decompressor no longer raise exceptions if given empty
data twice.  Patch by Benjamin Fogle.
..
.. bpo: 28549
.. date: 9736
.. nonce: ShnM2y
.. section: Library
Fixed segfault in curses's addch() with ncurses6.
..
.. bpo: 28449
.. date: 9735
.. nonce: 5JK6ES
.. section: Library
tarfile.open() with mode "r" or "r:" now tries to open a tar file with
compression before trying to open it without compression.  Otherwise it had
50% chance failed with ignore_zeros=True.
..
.. bpo: 23262
.. date: 9734
.. nonce: 6EVB7N
.. section: Library
The webbrowser module now supports Firefox 36+ and derived browsers.  Based
on patch by Oleg Broytman.
..
.. bpo: 27939
.. date: 9733
.. nonce: mTfADV
.. section: Library
Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused by
representing the scale as float value internally in Tk.  tkinter.IntVar now
works if float value is set to underlying Tk variable.
..
.. bpo: 18844
.. date: 9732
.. nonce: oif1-H
.. section: Library
The various ways of specifying weights for random.choices() now produce the
same result sequences.
..
.. bpo: 28255
.. date: 9731
.. nonce: _ZH4wm
.. section: Library
calendar.TextCalendar().prmonth() no longer prints a space at the start of
new line after printing a month's calendar.  Patch by Xiang Zhang.
..
.. bpo: 20491
.. date: 9730
.. nonce: ObgnQ2
.. section: Library
The textwrap.TextWrapper class now honors non-breaking spaces. Based on
patch by Kaarle Ritvanen.
..
.. bpo: 28353
.. date: 9729
.. nonce: sKGbLL
.. section: Library
os.fwalk() no longer fails on broken links.
..
.. bpo: 28430
.. date: 9728
.. nonce: 4MiEYT
.. section: Library
Fix iterator of C implemented asyncio.Future doesn't accept non-None value
is passed to it.send(val).
..
.. bpo: 27025
.. date: 9727
.. nonce: foAViS
.. section: Library
Generated names for Tkinter widgets now start by the "!" prefix for
readability.
..
.. bpo: 25464
.. date: 9726
.. nonce: HDUTCu
.. section: Library
Fixed HList.header_exists() in tkinter.tix module by addin a workaround to
Tix library bug.
..
.. bpo: 28488
.. date: 9725
.. nonce: TgO112
.. section: Library
shutil.make_archive() no longer adds entry "./" to ZIP archive.
..
.. bpo: 25953
.. date: 9724
.. nonce: EKKJAQ
.. section: Library
re.sub() now raises an error for invalid numerical group reference in
replacement template even if the pattern is not found in the string.  Error
message for invalid group reference now includes the group index and the
position of the reference. Based on patch by SilentGhost.
..
.. bpo: 18219
.. date: 9723
.. nonce: 1ANQN1
.. section: Library
Optimize csv.DictWriter for large number of columns. Patch by Mariatta
Wijaya.
..
.. bpo: 28448
.. date: 9722
.. nonce: 5bduWe
.. section: Library
Fix C implemented asyncio.Future didn't work on Windows.
..
.. bpo: 28480
.. date: 9721
.. nonce: 9lHw6m
.. section: Library
Fix error building socket module when multithreading is disabled.
..
.. bpo: 24452
.. date: 9720
.. nonce: m9Kyg3
.. section: Library
Make webbrowser support Chrome on Mac OS X.
..
.. bpo: 20766
.. date: 9719
.. nonce: 4kvCzx
.. section: Library
Fix references leaked by pdb in the handling of SIGINT handlers.
..
.. bpo: 28492
.. date: 9718
.. nonce: pFRLQE
.. section: Library
Fix how StopIteration exception is raised in _asyncio.Future.
..
.. bpo: 28500
.. date: 9717
.. nonce: NINKzZ
.. section: Library
Fix asyncio to handle async gens GC from another thread.
..
.. bpo: 26923
.. date: 9716
.. nonce: 8dh3AV
.. section: Library
Fix asyncio.Gather to refuse being cancelled once all children are done.
Patch by Johannes Ebke.
..
.. bpo: 26796
.. date: 9715
.. nonce: TZyAfJ
.. section: Library
Don't configure the number of workers for default threadpool executor.
Initial patch by Hans Lawrenz.
..
.. bpo: 28544
.. date: 9714
.. nonce: KD1oFP
.. section: Library
Implement asyncio.Task in C.
..
.. bpo: 28522
.. date: 9713
.. nonce: XHMQa7
.. section: Windows
Fixes mishandled buffer reallocation in getpathp.c
..
.. bpo: 28444
.. date: 9712
.. nonce: zkc9nT
.. section: Build
Fix missing extensions modules when cross compiling.
..
.. bpo: 28208
.. date: 9711
.. nonce: DtoP1i
.. section: Build
Update Windows build and OS X installers to use SQLite 3.14.2.
..
.. bpo: 28248
.. date: 9710
.. nonce: KY_-en
.. section: Build
Update Windows build and OS X installers to use OpenSSL 1.0.2j.
..
.. bpo: 26944
.. date: 9709
.. nonce: ChZ_BO
.. section: Tests
Fix test_posix for Android where 'id -G' is entirely wrong or missing the
effective gid.
..
.. bpo: 28409
.. date: 9708
.. nonce: Q2IlxJ
.. section: Tests
regrtest: fix the parser of command line arguments.

.. bpo: 38945
.. date: 2019-12-01-22-44-40
.. nonce: ztmNXc
.. release date: 2019-12-18
.. section: Security
Newline characters have been escaped when performing uu encoding to prevent
them from overflowing into to content section of the encoded file. This
prevents malicious or accidental modification of data during the decoding
process.
..
.. bpo: 37228
.. date: 2019-11-21-21-36-54
.. nonce: yBZnFG
.. section: Security
Due to significant security concerns, the *reuse_address* parameter of
:meth:`asyncio.loop.create_datagram_endpoint` is no longer supported. This
is because of the behavior of ``SO_REUSEADDR`` in UDP. For more details, see
the documentation for ``loop.create_datagram_endpoint()``. (Contributed by
Kyle Stanley, Antoine Pitrou, and Yury Selivanov in :issue:`37228`.)
..
.. bpo: 38804
.. date: 2019-11-15-00-54-42
.. nonce: vjbM8V
.. section: Security
Fixes a ReDoS vulnerability in :mod:`http.cookiejar`. Patch by Ben Caller.
..
.. bpo: 39028
.. date: 2019-12-17-23-20-51
.. nonce: SND4TB
.. section: Core and Builtins
Slightly improve the speed of keyword argument parsing with many kwargs by
strengthening the assumption that kwargs are interned strings.
..
.. bpo: 39080
.. date: 2019-12-17-21-45-36
.. nonce: OrxEVS
.. section: Core and Builtins
Fix the value of *end_col_offset* for Starred Expression AST nodes when they
are among the elements in the *args* attribute of Call AST nodes.
..
.. bpo: 39031
.. date: 2019-12-12-21-05-43
.. nonce: imlCYZ
.. section: Core and Builtins
When parsing an "elif" node, lineno and col_offset of the node now point to
the "elif" keyword and not to its condition, making it consistent with the
"if" node. Patch by Lysandros Nikolaou.
..
.. bpo: 20443
.. date: 2019-12-09-17-05-53
.. nonce: 8OyT5P
.. section: Core and Builtins
In Python 3.9.0a1, sys.argv[0] was made an absolute path if a filename was
specified on the command line. Revert this change, since most users expect
sys.argv to be unmodified.
..
.. bpo: 39008
.. date: 2019-12-09-10-38-51
.. nonce: Rrp6f1
.. section: Core and Builtins
:c:func:`PySys_Audit` now requires ``Py_ssize_t`` to be used for size
arguments in the format string, regardless of whether ``PY_SSIZE_T_CLEAN``
was defined at include time.
..
.. bpo: 38673
.. date: 2019-12-01-00-17-44
.. nonce: K_Tze-
.. section: Core and Builtins
In REPL mode, don't switch to PS2 if the line starts with comment or
whitespace. Based on work by Batuhan Taşkaya.
..
.. bpo: 38922
.. date: 2019-11-26-12-20-34
.. nonce: i6ja-i
.. section: Core and Builtins
Calling ``replace`` on a code object now raises the ``code.__new__`` audit
event.
..
.. bpo: 38920
.. date: 2019-11-26-09-16-47
.. nonce: Vx__sT
.. section: Core and Builtins
Add audit hooks for when :func:`sys.excepthook` and
:func:`sys.unraisablehook` are invoked.
..
.. bpo: 38892
.. date: 2019-11-22-22-18-50
.. nonce: LS586s
.. section: Core and Builtins
Improve documentation for audit events table and functions.
..
.. bpo: 38852
.. date: 2019-11-22-09-55-21
.. nonce: y7oPEa
.. section: Core and Builtins
Set the thread stack size to 8 Mb for debug builds on android platforms.
..
.. bpo: 38858
.. date: 2019-11-21-09-02-49
.. nonce: bDLH04
.. section: Core and Builtins
Each Python subinterpreter now has its own "small integer singletons":
numbers in [-5; 257] range. It is no longer possible to change the number of
small integers at build time by overriding ``NSMALLNEGINTS`` and
``NSMALLPOSINTS`` macros: macros should now be modified manually in
``pycore_pystate.h`` header file.
..
.. bpo: 36854
.. date: 2019-11-20-12-01-37
.. nonce: Zga_md
.. section: Core and Builtins
The garbage collector state becomes per interpreter
(``PyInterpreterState.gc``), rather than being global
(``_PyRuntimeState.gc``).
..
.. bpo: 38835
.. date: 2019-11-18-16-37-49
.. nonce: -U4se1
.. section: Core and Builtins
The ``PyFPE_START_PROTECT()`` and ``PyFPE_END_PROTECT()`` macros are empty:
they have been doing nothing for the last year, so stop using them.
..
.. bpo: 38328
.. date: 2019-11-11-23-44-15
.. nonce: IFrrjq
.. section: Core and Builtins
Sped up the creation time of constant :class:`list` and :class:`set`
displays. Patch by Brandt Bucher.
..
.. bpo: 38707
.. date: 2019-11-08-00-36-10
.. nonce: SZL036
.. section: Core and Builtins
``MainThread.native_id`` is now correctly reset in child processes spawned
using :class:`multiprocessing.Process`, instead of retaining the parent's
value.
..
.. bpo: 38629
.. date: 2019-10-29-17-11-15
.. nonce: 3qinhF
.. section: Core and Builtins
Added ``__floor__`` and ``__ceil__`` methods to float object. Patch by
Batuhan Taşkaya.
..
.. bpo: 27145
.. date: 2019-09-06-16-40-12
.. nonce: njuCXU
.. section: Core and Builtins
int + int and int - int operators can now return small integer singletons.
Patch by hongweipeng.
..
.. bpo: 38021
.. date: 2019-09-03-19-16-57
.. nonce: KnUhdB
.. section: Core and Builtins
Provide a platform tag for AIX that is sufficient for PEP425 binary
distribution identification. Patch by Michael Felt.
..
.. bpo: 35409
.. date: 2019-07-13-18-01-13
.. nonce: ozbcsR
.. section: Core and Builtins
Ignore GeneratorExit exceptions when throwing an exception into the aclose
coroutine of an asynchronous generator.
..
.. bpo: 33387
.. date: 2018-03-13-14-46-03
.. nonce: v821M7
.. section: Core and Builtins
Removed WITH_CLEANUP_START, WITH_CLEANUP_FINISH, BEGIN_FINALLY, END_FINALLY,
CALL_FINALLY and POP_FINALLY bytecodes. Replaced with RERAISE and
WITH_EXCEPT_START bytecodes. The compiler now generates different code for
exceptional and non-exceptional branches for 'with' and 'try-except'
statements. For 'try-finally' statements the 'finally' block is replicated
for each exit from the 'try' body.
..
.. bpo: 39033
.. date: 2019-12-13-18-54-49
.. nonce: cepuyD
.. section: Library
Fix :exc:`NameError` in :mod:`zipimport`. Patch by Karthikeyan Singaravelan.
..
.. bpo: 39022
.. date: 2019-12-10-23-34-48
.. nonce: QDtIxI
.. section: Library
Update importlib.metadata to include improvements from importlib_metadata
1.3 including better serialization of EntryPoints and improved documentation
for custom finders.
..
.. bpo: 39006
.. date: 2019-12-09-14-40-09
.. nonce: v4VsPg
.. section: Library
Fix asyncio when the ssl module is missing: only check for ssl.SSLSocket
instance if the ssl module is available.
..
.. bpo: 38708
.. date: 2019-12-07-22-25-39
.. nonce: rZTUfk
.. section: Library
Fix a potential IndexError in email parser when parsing an empty msg-id.
..
.. bpo: 38698
.. date: 2019-12-07-21-49-50
.. nonce: HxoSym
.. section: Library
Add a new ``InvalidMessageID`` token to email parser to represent invalid
Message-ID headers.  Also, add defects when there is remaining value after
parsing the header.
..
.. bpo: 38994
.. date: 2019-12-07-18-58-44
.. nonce: IJYhz_
.. section: Library
Implement ``__class_getitem__`` for ``os.PathLike``, ``pathlib.Path``.
..
.. bpo: 38979
.. date: 2019-12-07-16-32-42
.. nonce: q0sIHy
.. section: Library
Return class from ``ContextVar.__class_getitem__`` to simplify subclassing.
..
.. bpo: 38978
.. date: 2019-12-07-13-40-52
.. nonce: R3gHZI
.. section: Library
Implement ``__class_getitem__`` on asyncio objects (Future, Task, Queue).
Patch by Batuhan Taskaya.
..
.. bpo: 38916
.. date: 2019-12-06-18-47-56
.. nonce: K-raU8
.. section: Library
:class:`array.array`: Remove ``tostring()`` and ``fromstring()`` methods.
They were aliases to ``tobytes()`` and ``frombytes()``, deprecated since
Python 3.2.
..
.. bpo: 38986
.. date: 2019-12-06-15-11-42
.. nonce: bg6iZt
.. section: Library
Make repr of C accelerated TaskWakeupMethWrapper the same as of pure Python
version.
..
.. bpo: 38982
.. date: 2019-12-05-18-21-26
.. nonce: W3u-03
.. section: Library
Fix asyncio ``PidfdChildWatcher``: handle ``waitpid()`` error. If
``waitpid()`` is called elsewhere, ``waitpid()`` call fails with
:exc:`ChildProcessError`: use return code 255 in this case, and log a
warning. It ensures that the pidfd file descriptor is closed if this error
occurs.
..
.. bpo: 38529
.. date: 2019-12-05-16-13-25
.. nonce: yvQgx3
.. section: Library
Drop too noisy asyncio warning about deletion of a stream without explicit
``.close()`` call.
..
.. bpo: 27413
.. date: 2019-12-05-02-02-58
.. nonce: 212Th2
.. section: Library
Added ability to pass through ``ensure_ascii`` options to json.dumps in the
``json.tool`` command-line interface.
..
.. bpo: 38634
.. date: 2019-12-04-15-56-28
.. nonce: pq0ZWa
.. section: Library
The :mod:`readline` module now detects if Python is linked to libedit at
runtime on all platforms.  Previously, the check was only done on macOS.
..
.. bpo: 33684
.. date: 2019-12-04-15-28-40
.. nonce: QeSmQP
.. section: Library
Fix ``json.tool`` failed to read a JSON file with non-ASCII characters when
locale encoding is not UTF-8.
..
.. bpo: 38698
.. date: 2019-12-02-10-35-19
.. nonce: WZnAPQ
.. section: Library
Prevent UnboundLocalError to pop up in parse_message_id.
parse_message_id() was improperly using a token defined inside an exception
handler, which was raising ``UnboundLocalError`` on parsing an invalid value.
Patch by Claudiu Popa.
..
.. bpo: 38927
.. date: 2019-11-27-17-47-00
.. nonce: qT7xKY
.. section: Library
Use ``python -m pip`` instead of ``pip`` to upgrade dependencies in venv.
..
.. bpo: 26730
.. date: 2019-11-27-16-30-02
.. nonce: 56cdBn
.. section: Library
Fix ``SpooledTemporaryFile.rollover()`` might corrupt the file when it is in
text mode. Patch by Serhiy Storchaka.
..
.. bpo: 38881
.. date: 2019-11-22-20-03-46
.. nonce: 7HV1Q0
.. section: Library
random.choices() now raises a ValueError when all the weights are zero.
..
.. bpo: 38876
.. date: 2019-11-22-10-58-58
.. nonce: qqy1Vp
.. section: Library
Raise pickle.UnpicklingError when loading an item from memo for invalid
input.
The previous code was raising a ``KeyError`` for both the Python and C
implementation. This was caused by the specified index of an invalid input
which did not exist in the memo structure, where the pickle stores what
objects it has seen. The malformed input would have caused either a ``BINGET``
or ``LONG_BINGET`` load from the memo, leading to a ``KeyError`` as the
determined index was bogus. Patch by Claudiu Popa.
..
.. bpo: 38688
.. date: 2019-11-22-10-45-03
.. nonce: iKx23z
.. section: Library
Calling func:``shutil.copytree`` to copy a directory tree from one directory
to another subdirectory resulted in an endless loop and a RecursionError. A
fix was added to consume an iterator and create the list of the entries to
be copied, avoiding the recursion for newly created directories. Patch by
Bruno P. Kinoshita.
..
.. bpo: 38863
.. date: 2019-11-21-16-30-00
.. nonce: RkdTjf
.. section: Library
Improve :func:`is_cgi` function in :mod:`http.server`, which enables
processing the case that cgi directory is a child of another directory other
than root.
..
.. bpo: 37838
.. date: 2019-11-21-11-39-17
.. nonce: lRFcEC
.. section: Library
:meth:`typing.get_type_hints` properly handles functions decorated with
:meth:`functools.wraps`.
..
.. bpo: 38870
.. date: 2019-11-20-22-43-48
.. nonce: rLVZEv
.. section: Library
Expose :func:`ast.unparse` as a function of the :mod:`ast` module that can
be used to unparse an :class:`ast.AST` object and produce a string with code
that would produce an equivalent :class:`ast.AST` object when parsed. Patch
by Pablo Galindo and Batuhan Taskaya.
..
.. bpo: 38859
.. date: 2019-11-19-16-30-46
.. nonce: AZUzL8
.. section: Library
AsyncMock now returns StopAsyncIteration on the exhaustion of a side_effects
iterable. Since PEP-479 its Impossible to raise a StopIteration exception
from a coroutine.
..
.. bpo: 38857
.. date: 2019-11-19-16-28-25
.. nonce: YPUkU9
.. section: Library
AsyncMock fix for return values that are awaitable types.  This also covers
side_effect iterable values that happened to be awaitable, and wraps
callables that return an awaitable type. Before these awaitables were being
awaited instead of being returned as is.
..
.. bpo: 38834
.. date: 2019-11-18-17-08-23
.. nonce: abcdef
.. section: Library
:class:`typing.TypedDict` subclasses now track which keys are optional using
the ``__required_keys__`` and ``__optional_keys__`` attributes, to enable
runtime validation by downstream projects.  Patch by Zac Hatfield-Dodds.
..
.. bpo: 38821
.. date: 2019-11-16-23-26-25
.. nonce: -albNN
.. section: Library
Fix unhandled exceptions in :mod:`argparse` when internationalizing error
messages for arguments with ``nargs`` set to special (non-integer) values.
Patch by Federico Bond.
..
.. bpo: 38820
.. date: 2019-11-16-16-09-07
.. nonce: ivhUSV
.. section: Library
Make Python compatible with OpenSSL 3.0.0. :func:`ssl.SSLSocket.getpeercert`
no longer returns IPv6 addresses with a trailing new line.
..
.. bpo: 38811
.. date: 2019-11-15-18-06-04
.. nonce: AmdQ6M
.. section: Library
Fix an unhandled exception in :mod:`pathlib` when :meth:`os.link` is
missing. Patch by Toke Høiland-Jørgensen.
..
.. bpo: 38686
.. date: 2019-11-06-15-26-15
.. nonce: HNFBce
.. section: Library
Added support for multiple ``qop`` values in
:class:`urllib.request.AbstractDigestAuthHandler`.
..
.. bpo: 38712
.. date: 2019-11-05-21-10-12
.. nonce: ezJ0TP
.. section: Library
Add the Linux-specific :func:`signal.pidfd_send_signal` function, which
allows sending a signal to a process identified by a file descriptor rather
than a pid.
..
.. bpo: 38348
.. date: 2019-10-02-18-15-28
.. nonce: _-5eq2
.. section: Library
Add ``-i`` and ``--indent`` (indentation level), and ``--no-type-comments``
(type comments) command line options to ast parsing tool.
..
.. bpo: 37523
.. date: 2019-10-02-02-55-37
.. nonce: GguwJ6
.. section: Library
Change :class:`zipfile.ZipExtFile` to raise ``ValueError`` when trying to
access the underlying file object after it has been closed. This new
behavior is consistent with how accessing closed files is handled in other
parts of Python.
..
.. bpo: 38045
.. date: 2019-09-30-12-09-41
.. nonce: VDRtd3
.. section: Library
Improve the performance of :func:`enum._decompose` in :mod:`enum`. Patch by
hongweipeng.
..
.. bpo: 36820
.. date: 2019-05-06-15-34-17
.. nonce: Eh5mIB
.. section: Library
Break cycle generated when saving an exception in socket.py, codeop.py and
dyld.py as they keep alive not only the exception but user objects through
the ``__traceback__`` attribute. Patch by Mario Corchero.
..
.. bpo: 36406
.. date: 2019-03-24-12-12-27
.. nonce: mCEkOl
.. section: Library
Handle namespace packages in :mod:`doctest`. Patch by Karthikeyan
Singaravelan.
..
.. bpo: 34776
.. date: 2018-09-23-14-24-37
.. nonce: 1SrQe3
.. section: Library
Fix dataclasses to support forward references in type annotations
..
.. bpo: 20928
.. date: 2018-03-30-16-18-12
.. nonce: ieXu6I
.. section: Library
ElementTree supports recursive XInclude processing.  Patch by Stefan Behnel.
..
.. bpo: 29636
.. date: 2018-02-22-11-24-33
.. nonce: ogGRE2
.. section: Library
Add whitespace options for formatting JSON with the ``json.tool`` CLI. The
following mutually exclusive options are now supported: ``--indent`` for
setting the indent level in spaces; ``--tab`` for indenting with tabs;
``--no-indent`` for suppressing newlines; and ``--compact`` for suppressing
all whitespace. The default behavior remains the same as ``--indent=4``.
..
.. bpo: 38928
.. date: 2019-11-27-17-51-27
.. nonce: AfgvfO
.. section: Documentation
Correct when venv's ``upgrade_dependencies()`` and ``--upgrade-deps`` are
added.
..
.. bpo: 38899
.. date: 2019-11-22-15-57-29
.. nonce: 4aYPW2
.. section: Documentation
Update documentation to state that to activate virtual environments under
fish one should use ``source``, not ``.`` as documented at
https://fishshell.com/docs/current/cmds/source.html.
..
.. bpo: 22377
.. date: 2019-10-01-10-53-46
.. nonce: 5ni-iC
.. section: Documentation
Improves documentation of the values that :meth:`datetime.datetime.strptime`
accepts for ``%Z``. Patch by Karl Dubost.
..
.. bpo: 38546
.. date: 2019-12-18-14-52-08
.. nonce: 2kxNuM
.. section: Tests
Fix test_ressources_gced_in_workers() of test_concurrent_futures: explicitly
stop the manager to prevent leaking a child process running in the
background after the test completes.
..
.. bpo: 38546
.. date: 2019-12-17-15-27-07
.. nonce: 82JwN2
.. section: Tests
Multiprocessing and concurrent.futures tests now stop the resource tracker
process when tests complete.
..
.. bpo: 38614
.. date: 2019-12-10-14-26-23
.. nonce: 89JpNh
.. section: Tests
Replace hardcoded timeout constants in tests with new :mod:`test.support`
constants: :data:`~test.support.LOOPBACK_TIMEOUT`,
:data:`~test.support.INTERNET_TIMEOUT`, :data:`~test.support.SHORT_TIMEOUT`
and :data:`~test.support.LONG_TIMEOUT`. It becomes easier to adjust these
four timeout constants for all tests at once, rather than having to adjust
every single test file.
..
.. bpo: 38547
.. date: 2019-12-09-11-32-34
.. nonce: Juw54e
.. section: Tests
Fix test_pty: if the process is the session leader, closing the master file
descriptor raises a SIGHUP signal: simply ignore SIGHUP when running the
tests.
..
.. bpo: 38992
.. date: 2019-12-08-15-11-06
.. nonce: cVoHOZ
.. section: Tests
Fix a test for :func:`math.fsum` that was failing due to constant folding.
..
.. bpo: 38991
.. date: 2019-12-07-00-52-09
.. nonce: JE3_o-
.. section: Tests
:mod:`test.support`: :func:`~test.support.run_python_until_end`,
:func:`~test.support.assert_python_ok` and
:func:`~test.support.assert_python_failure` functions no longer strip
whitespaces from stderr. Remove ``test.support.strip_python_stderr()``
function.
..
.. bpo: 38965
.. date: 2019-12-04-17-08-55
.. nonce: yqax3m
.. section: Tests
Fix test_faulthandler on GCC 10. Use the "volatile" keyword in
``faulthandler._stack_overflow()`` to prevent tail call optimization on any
compiler, rather than relying on compiler specific pragma.
..
.. bpo: 38875
.. date: 2019-11-21-09-11-06
.. nonce: wSZJal
.. section: Tests
test_capi: trashcan tests now require the test "cpu" resource.
..
.. bpo: 38841
.. date: 2019-11-20-16-08-19
.. nonce: 5F5Lbw
.. section: Tests
Skip asyncio test_create_datagram_endpoint_existing_sock_unix on platforms
lacking a functional bind() for named unix domain sockets.
..
.. bpo: 38692
.. date: 2019-11-20-15-42-06
.. nonce: aqAvyF
.. section: Tests
Skip the test_posix.test_pidfd_open() test if ``os.pidfd_open()`` fails with
a :exc:`PermissionError`. This situation can happen in a Linux sandbox using
a syscall whitelist which doesn't allow the ``pidfd_open()`` syscall yet.
..
.. bpo: 38839
.. date: 2019-11-18-22-10-55
.. nonce: di6tXv
.. section: Tests
Fix some unused functions in tests. Patch by Adam Johnson.
..
.. bpo: 38669
.. date: 2019-11-04-02-54-16
.. nonce: pazXZ8
.. section: Tests
Raise :exc:`TypeError` when passing target as a string with
:meth:`unittest.mock.patch.object`.
..
.. bpo: 37957
.. date: 2019-10-30-00-01-43
.. nonce: X1r78F
.. section: Tests
test.regrtest now can receive a list of test patterns to ignore (using the
-i/--ignore argument) or a file with a list of patterns to ignore (using the
--ignore-file argument). Patch by Pablo Galindo.
..
.. bpo: 37404
.. date: 2019-12-01-21-45-24
.. nonce: cNsA7S
.. section: Build
:mod:`asyncio` now raises :exc:`TypeError` when calling incompatible
methods with an :class:`ssl.SSLSocket` socket.  Patch by Ido Michael.
..
.. bpo: 36500
.. date: 2019-04-02-01-59-26
.. nonce: fyG6_U
.. section: Build
Added an optional "regen" project to the Visual Studio solution that will
regenerate all grammar, tokens, and opcodes.
..
.. bpo: 39007
.. date: 2019-12-09-10-40-34
.. nonce: vtarxo
.. section: Windows
Add auditing events to functions in :mod:`winreg`.
..
.. bpo: 33125
.. date: 2019-11-14-08-57-50
.. nonce: EN5MWS
.. section: Windows
Add support for building and releasing Windows ARM64 packages.
..
.. bpo: 37931
.. date: 2019-08-23-12-14-34
.. nonce: goYgQj
.. section: macOS
Fixed a crash on OSX dynamic builds that occurred when re-initializing the
posix module after a Py_Finalize if the environment had changed since the
previous ``import posix``. Patch by Benoît Hudson.
..
.. bpo: 38944
.. date: 2019-11-30-12-10-36
.. nonce: _3xjKG
.. section: IDLE
Escape key now closes IDLE completion windows.  Patch by Johnny Najera.
..
.. bpo: 38943
.. date: 2019-11-29-23-44-11
.. nonce: 8pUKKs
.. section: IDLE
Fix IDLE autocomplete windows not always appearing on some systems. Patch by
Johnny Najera.
..
.. bpo: 38862
.. date: 2019-11-23-21-50-57
.. nonce: KQ9A0m
.. section: IDLE
'Strip Trailing Whitespace' on the Format menu removes extra newlines at the
end of non-shell files.
..
.. bpo: 38636
.. date: 2019-10-30-22-11-16
.. nonce: hUhDeB
.. section: IDLE
Fix IDLE Format menu tab toggle and file indent width. These functions
(default shortcuts Alt-T and Alt-U) were mistakenly disabled in 3.7.5 and
3.8.0.
..
.. bpo: 38896
.. date: 2019-11-22-19-43-43
.. nonce: 6wvNMJ
.. section: C API
Remove ``PyUnicode_ClearFreeList()`` function: the Unicode free list has
been removed in Python 3.3.
..
.. bpo: 37340
.. date: 2019-11-20-11-08-06
.. nonce: JBQJMS
.. section: C API
Remove ``PyMethod_ClearFreeList()`` and ``PyCFunction_ClearFreeList()``
functions: the free lists of bound method objects have been removed.
..
.. bpo: 38835
.. date: 2019-11-18-15-38-23
.. nonce: II8Szd
.. section: C API
Exclude ``PyFPE_START_PROTECT()`` and ``PyFPE_END_PROTECT()`` macros of
``pyfpe.h`` from ``Py_LIMITED_API`` (stable API).

.. bpo: 25630
.. date: 9450
.. nonce: ZxzcoY
.. release date: 2015-11-22
.. section: Core and Builtins
Fix a possible segfault during argument parsing in functions that accept
filesystem paths.
..
.. bpo: 23564
.. date: 9449
.. nonce: XHarGG
.. section: Core and Builtins
Fixed a partially broken sanity check in the _posixsubprocess internals
regarding how fds_to_pass were passed to the child.  The bug had no actual
impact as subprocess.py already avoided it.
..
.. bpo: 25388
.. date: 9448
.. nonce: zm3uuQ
.. section: Core and Builtins
Fixed tokenizer crash when processing undecodable source code with a null
byte.
..
.. bpo: 25462
.. date: 9447
.. nonce: eXDzgO
.. section: Core and Builtins
The hash of the key now is calculated only once in most operations in C
implementation of OrderedDict.
..
.. bpo: 22995
.. date: 9446
.. nonce: 90kpuP
.. section: Core and Builtins
Default implementation of __reduce__ and __reduce_ex__ now rejects builtin
types with not defined __new__.
..
.. bpo: 25555
.. date: 9445
.. nonce: MUpG-j
.. section: Core and Builtins
Fix parser and AST: fill lineno and col_offset of "arg" node when compiling
AST from Python objects.
..
.. bpo: 24802
.. date: 9444
.. nonce: Qie066
.. section: Core and Builtins
Avoid buffer overreads when int(), float(), compile(), exec() and eval() are
passed bytes-like objects.  These objects are not necessarily terminated by
a null byte, but the functions assumed they were.
..
.. bpo: 24726
.. date: 9443
.. nonce: AHk4v2
.. section: Core and Builtins
Fixed a crash and leaking NULL in repr() of OrderedDict that was mutated by
direct calls of dict methods.
..
.. bpo: 25449
.. date: 9442
.. nonce: VqTOFi
.. section: Core and Builtins
Iterating OrderedDict with keys with unstable hash now raises KeyError in C
implementations as well as in Python implementation.
..
.. bpo: 25395
.. date: 9441
.. nonce: htkE3W
.. section: Core and Builtins
Fixed crash when highly nested OrderedDict structures were garbage
collected.
..
.. bpo: 25274
.. date: 9440
.. nonce: QCGvAF
.. section: Core and Builtins
sys.setrecursionlimit() now raises a RecursionError if the new recursion
limit is too low depending at the current recursion depth. Modify also the
"lower-water mark" formula to make it monotonic. This mark is used to decide
when the overflowed flag of the thread state is reset.
..
.. bpo: 24402
.. date: 9439
.. nonce: MAgi3X
.. section: Core and Builtins
Fix input() to prompt to the redirected stdout when sys.stdout.fileno()
fails.
..
.. bpo: 24806
.. date: 9438
.. nonce: Nb0znT
.. section: Core and Builtins
Prevent builtin types that are not allowed to be subclassed from being
subclassed through multiple inheritance.
..
.. bpo: 24848
.. date: 9437
.. nonce: HlUSuy
.. section: Core and Builtins
Fixed a number of bugs in UTF-7 decoding of misformed data.
..
.. bpo: 25280
.. date: 9436
.. nonce: ivTMwd
.. section: Core and Builtins
Import trace messages emitted in verbose (-v) mode are no longer formatted
twice.
..
.. bpo: 25003
.. date: 9435
.. nonce: _ban92
.. section: Core and Builtins
On Solaris 11.3 or newer, os.urandom() now uses the getrandom() function
instead of the getentropy() function. The getentropy() function is blocking
to generate very good quality entropy, os.urandom() doesn't need such
high-quality entropy.
..
.. bpo: 25182
.. date: 9434
.. nonce: gBDq-T
.. section: Core and Builtins
The stdprinter (used as sys.stderr before the io module is imported at
startup) now uses the backslashreplace error handler.
..
.. bpo: 25131
.. date: 9433
.. nonce: j5hH6a
.. section: Core and Builtins
Make the line number and column offset of set/dict literals and
comprehensions correspond to the opening brace.
..
.. bpo: 25150
.. date: 9432
.. nonce: 0Gh-Ty
.. section: Core and Builtins
Hide the private :samp:`_Py_atomic_{xxx}` symbols from the public Python.h header to
fix a compilation error with OpenMP. PyThreadState_GET() becomes an alias to
PyThreadState_Get() to avoid ABI incompatibilities.
..
.. bpo: 25626
.. date: 9431
.. nonce: TQ3fvb
.. section: Library
Change three zlib functions to accept sizes that fit in Py_ssize_t, but
internally cap those sizes to UINT_MAX.  This resolves a regression in 3.5
where GzipFile.read() failed to read chunks larger than 2 or 4 GiB.  The
change affects the zlib.Decompress.decompress() max_length parameter, the
zlib.decompress() bufsize parameter, and the zlib.Decompress.flush() length
parameter.
..
.. bpo: 25583
.. date: 9430
.. nonce: Gk-cim
.. section: Library
Avoid incorrect errors raised by os.makedirs(exist_ok=True) when the OS
gives priority to errors such as EACCES over EEXIST.
..
.. bpo: 25593
.. date: 9429
.. nonce: 56uegI
.. section: Library
Change semantics of EventLoop.stop() in asyncio.
..
.. bpo: 6973
.. date: 9428
.. nonce: nl5cHt
.. section: Library
When we know a subprocess.Popen process has died, do not allow the
send_signal(), terminate(), or kill() methods to do anything as they could
potentially signal a different process.
..
.. bpo: 25590
.. date: 9427
.. nonce: aCt-yW
.. section: Library
In the Readline completer, only call getattr() once per attribute.
..
.. bpo: 25498
.. date: 9426
.. nonce: AvqEBl
.. section: Library
Fix a crash when garbage-collecting ctypes objects created by wrapping a
memoryview.  This was a regression made in 3.5a1.  Based on patch by
Eryksun.
..
.. bpo: 25584
.. date: 9425
.. nonce: 124mYw
.. section: Library
Added "escape" to the __all__ list in the glob module.
..
.. bpo: 25584
.. date: 9424
.. nonce: ZeWX0J
.. section: Library
Fixed recursive glob() with patterns starting with ``**``.
..
.. bpo: 25446
.. date: 9423
.. nonce: k1DByx
.. section: Library
Fix regression in smtplib's AUTH LOGIN support.
..
.. bpo: 18010
.. date: 9422
.. nonce: Azyf1C
.. section: Library
Fix the pydoc web server's module search function to handle exceptions from
importing packages.
..
.. bpo: 25554
.. date: 9421
.. nonce: UM9MlR
.. section: Library
Got rid of circular references in regular expression parsing.
..
.. bpo: 25510
.. date: 9420
.. nonce: 79g7LA
.. section: Library
fileinput.FileInput.readline() now returns b'' instead of '' at the end if
the FileInput was opened with binary mode. Patch by Ryosuke Ito.
..
.. bpo: 25503
.. date: 9419
.. nonce: Zea0Y7
.. section: Library
Fixed inspect.getdoc() for inherited docstrings of properties. Original
patch by John Mark Vandenberg.
..
.. bpo: 25515
.. date: 9418
.. nonce: fQsyYG
.. section: Library
Always use os.urandom as a source of randomness in uuid.uuid4.
..
.. bpo: 21827
.. date: 9417
.. nonce: k2oreR
.. section: Library
Fixed textwrap.dedent() for the case when largest common whitespace is a
substring of smallest leading whitespace. Based on patch by Robert Li.
..
.. bpo: 25447
.. date: 9416
.. nonce: eDYc4t
.. section: Library
The lru_cache() wrapper objects now can be copied and pickled (by returning
the original object unchanged).
..
.. bpo: 25390
.. date: 9415
.. nonce: 6mSgRq
.. section: Library
typing: Don't crash on Union[str, Pattern].
..
.. bpo: 25441
.. date: 9414
.. nonce: d7zph6
.. section: Library
asyncio: Raise error from drain() when socket is closed.
..
.. bpo: 25410
.. date: 9413
.. nonce: QAs_3B
.. section: Library
Cleaned up and fixed minor bugs in C implementation of OrderedDict.
..
.. bpo: 25411
.. date: 9412
.. nonce: qsJTCb
.. section: Library
Improved Unicode support in SMTPHandler through better use of the email
package. Thanks to user simon04 for the patch.
..
.. bpo: 25407
.. date: 9411
.. nonce: ukNt1D
.. section: Library
Remove mentions of the formatter module being removed in Python 3.6.
..
.. bpo: 25406
.. date: 9410
.. nonce: 5MZKU_
.. section: Library
Fixed a bug in C implementation of OrderedDict.move_to_end() that caused
segmentation fault or hang in iterating after moving several items to the
start of ordered dict.
..
.. bpo: 25364
.. date: 9409
.. nonce: u_1Wi6
.. section: Library
zipfile now works in threads disabled builds.
..
.. bpo: 25328
.. date: 9408
.. nonce: Rja1Xg
.. section: Library
smtpd's SMTPChannel now correctly raises a ValueError if both decode_data
and enable_SMTPUTF8 are set to true.
..
.. bpo: 25316
.. date: 9407
.. nonce: dHQHWI
.. section: Library
distutils raises OSError instead of DistutilsPlatformError when MSVC is not
installed.
..
.. bpo: 25380
.. date: 9406
.. nonce: sKZ6-I
.. section: Library
Fixed protocol for the STACK_GLOBAL opcode in pickletools.opcodes.
..
.. bpo: 23972
.. date: 9405
.. nonce: s2g30g
.. section: Library
Updates asyncio datagram create method allowing reuseport and reuseaddr
socket options to be set prior to binding the socket. Mirroring the existing
asyncio create_server method the reuseaddr option for datagram sockets
defaults to True if the O/S is 'posix' (except if the platform is Cygwin).
Patch by Chris Laws.
..
.. bpo: 25304
.. date: 9404
.. nonce: CsmLyI
.. section: Library
Add asyncio.run_coroutine_threadsafe().  This lets you submit a coroutine to
a loop from another thread, returning a concurrent.futures.Future.  By
Vincent Michel.
..
.. bpo: 25232
.. date: 9403
.. nonce: KhKjCE
.. section: Library
Fix CGIRequestHandler to split the query from the URL at the first question
mark (?) rather than the last. Patch from Xiang Zhang.
..
.. bpo: 24657
.. date: 9402
.. nonce: h2Ag7y
.. section: Library
Prevent CGIRequestHandler from collapsing slashes in the query part of the
URL as if it were a path. Patch from Xiang Zhang.
..
.. bpo: 24483
.. date: 9401
.. nonce: WPLGSJ
.. section: Library
C implementation of functools.lru_cache() now calculates key's hash only
once.
..
.. bpo: 22958
.. date: 9400
.. nonce: Ebu7Gl
.. section: Library
Constructor and update method of weakref.WeakValueDictionary now accept the
self and the dict keyword arguments.
..
.. bpo: 22609
.. date: 9399
.. nonce: fV7hdV
.. section: Library
Constructor of collections.UserDict now accepts the self keyword argument.
..
.. bpo: 25111
.. date: 9398
.. nonce: azL4qE
.. section: Library
Fixed comparison of traceback.FrameSummary.
..
.. bpo: 25262
.. date: 9397
.. nonce: pQS5cB
.. section: Library
Added support for BINBYTES8 opcode in Python implementation of unpickler.
Highest 32 bits of 64-bit size for BINUNICODE8 and BINBYTES8 opcodes no
longer silently ignored on 32-bit platforms in C implementation.
..
.. bpo: 25034
.. date: 9396
.. nonce: eGvOIb
.. section: Library
Fix string.Formatter problem with auto-numbering and nested format_specs.
Patch by Anthon van der Neut.
..
.. bpo: 25233
.. date: 9395
.. nonce: EdZV9x
.. section: Library
Rewrite the guts of asyncio.Queue and asyncio.Semaphore to be more
understandable and correct.
..
.. bpo: 25203
.. date: 9394
.. nonce: IgDEbt
.. section: Library
Failed readline.set_completer_delims() no longer left the module in
inconsistent state.
..
.. bpo: 23600
.. date: 9393
.. nonce: 7J_RD5
.. section: Library
Default implementation of tzinfo.fromutc() was returning wrong results in
some cases.
..
.. bpo: 23329
.. date: 9392
.. nonce: yccJBE
.. section: Library
Allow the ssl module to be built with older versions of LibreSSL.
..
.. bpo: 0
.. date: 9391
.. nonce: ww9QSm
.. section: Library
Prevent overflow in _Unpickler_Read.
..
.. bpo: 25047
.. date: 9390
.. nonce: kc8tqx
.. section: Library
The XML encoding declaration written by Element Tree now respects the letter
case given by the user. This restores the ability to write encoding names in
uppercase like "UTF-8", which worked in Python 2.
..
.. bpo: 25135
.. date: 9389
.. nonce: gVHNy-
.. section: Library
Make deque_clear() safer by emptying the deque before clearing. This helps
avoid possible reentrancy issues.
..
.. bpo: 19143
.. date: 9388
.. nonce: 76SBSO
.. section: Library
platform module now reads Windows version from kernel32.dll to avoid
compatibility shims.
..
.. bpo: 25092
.. date: 9387
.. nonce: fQ37Ac
.. section: Library
Fix datetime.strftime() failure when errno was already set to EINVAL.
..
.. bpo: 23517
.. date: 9386
.. nonce: 3ABmf1
.. section: Library
Fix rounding in fromtimestamp() and utcfromtimestamp() methods of
datetime.datetime: microseconds are now rounded to nearest with ties going
to nearest even integer (ROUND_HALF_EVEN), instead of being rounding towards
minus infinity (ROUND_FLOOR). It's important that these methods use the same
rounding mode than datetime.timedelta to keep the property:
(datetime(1970,1,1) + timedelta(seconds=t)) == datetime.utcfromtimestamp(t).
It also the rounding mode used by round(float) for example.
..
.. bpo: 25155
.. date: 9385
.. nonce: JiETzD
.. section: Library
Fix datetime.datetime.now() and datetime.datetime.utcnow() on Windows to
support date after year 2038. It was a regression introduced in Python
3.5.0.
..
.. bpo: 25108
.. date: 9384
.. nonce: zGPbgA
.. section: Library
Omitted internal frames in traceback functions print_stack(),
format_stack(), and extract_stack() called without arguments.
..
.. bpo: 25118
.. date: 9383
.. nonce: wGm1u6
.. section: Library
Fix a regression of Python 3.5.0 in os.waitpid() on Windows.
..
.. bpo: 24684
.. date: 9382
.. nonce: t4T77O
.. section: Library
socket.socket.getaddrinfo() now calls PyUnicode_AsEncodedString() instead of
calling the encode() method of the host, to handle correctly custom string
with an encode() method which doesn't return a byte string. The encoder of
the IDNA codec is now called directly instead of calling the encode() method
of the string.
..
.. bpo: 25060
.. date: 9381
.. nonce: zLdvIk
.. section: Library
Correctly compute stack usage of the BUILD_MAP opcode.
..
.. bpo: 24857
.. date: 9380
.. nonce: PpJWZ9
.. section: Library
Comparing call_args to a long sequence now correctly returns a boolean
result instead of raising an exception.  Patch by A Kaptur.
..
.. bpo: 23144
.. date: 9379
.. nonce: cLf67X
.. section: Library
Make sure that HTMLParser.feed() returns all the data, even when
convert_charrefs is True.
..
.. bpo: 24982
.. date: 9378
.. nonce: sGMMAR
.. section: Library
shutil.make_archive() with the "zip" format now adds entries for directories
(including empty directories) in ZIP file.
..
.. bpo: 25019
.. date: 9377
.. nonce: JQJlOZ
.. section: Library
Fixed a crash caused by setting non-string key of expat parser. Based on
patch by John Leitch.
..
.. bpo: 16180
.. date: 9376
.. nonce: 6IUcNS
.. section: Library
Exit pdb if file has syntax error, instead of trapping user in an infinite
loop.  Patch by Xavier de Gaye.
..
.. bpo: 24891
.. date: 9375
.. nonce: ddVmHS
.. section: Library
Fix a race condition at Python startup if the file descriptor of stdin (0),
stdout (1) or stderr (2) is closed while Python is creating sys.stdin,
sys.stdout and sys.stderr objects. These attributes are now set to None if
the creation of the object failed, instead of raising an OSError exception.
Initial patch written by Marco Paolini.
..
.. bpo: 24992
.. date: 9374
.. nonce: 5sqF74
.. section: Library
Fix error handling and a race condition (related to garbage collection) in
collections.OrderedDict constructor.
..
.. bpo: 24881
.. date: 9373
.. nonce: ZoVZXu
.. section: Library
Fixed setting binary mode in Python implementation of FileIO on Windows and
Cygwin.  Patch from Akira Li.
..
.. bpo: 25578
.. date: 9372
.. nonce: G6S-ft
.. section: Library
Fix (another) memory leak in SSLSocket.getpeercer().
..
.. bpo: 25530
.. date: 9371
.. nonce: hDFkwu
.. section: Library
Disable the vulnerable SSLv3 protocol by default when creating
ssl.SSLContext.
..
.. bpo: 25569
.. date: 9370
.. nonce: CfvQjK
.. section: Library
Fix memory leak in SSLSocket.getpeercert().
..
.. bpo: 25471
.. date: 9369
.. nonce: T0A02M
.. section: Library
Sockets returned from accept() shouldn't appear to be nonblocking.
..
.. bpo: 25319
.. date: 9368
.. nonce: iyuglv
.. section: Library
When threading.Event is reinitialized, the underlying condition should use a
regular lock rather than a recursive lock.
..
.. bpo: 21112
.. date: 9367
.. nonce: vSFU1r
.. section: Library
Fix regression in unittest.expectedFailure on subclasses. Patch from Berker
Peksag.
..
.. bpo: 24764
.. date: 9366
.. nonce: QwFZ2S
.. section: Library
cgi.FieldStorage.read_multi() now ignores the Content-Length header in part
headers. Patch written by Peter Landry and reviewed by Pierre Quentel.
..
.. bpo: 24913
.. date: 9365
.. nonce: p2ZAJ4
.. section: Library
Fix overrun error in deque.index(). Found by John Leitch and Bryce Darling.
..
.. bpo: 24774
.. date: 9364
.. nonce: xLbskG
.. section: Library
Fix docstring in http.server.test. Patch from Chiu-Hsiang Hsu.
..
.. bpo: 21159
.. date: 9363
.. nonce: ochL5W
.. section: Library
Improve message in configparser.InterpolationMissingOptionError. Patch from
Łukasz Langa.
..
.. bpo: 20362
.. date: 9362
.. nonce: 5aP_Ri
.. section: Library
Honour TestCase.longMessage correctly in assertRegex. Patch from Ilia
Kurenkov.
..
.. bpo: 23572
.. date: 9361
.. nonce: QhQ9RD
.. section: Library
Fixed functools.singledispatch on classes with false metaclasses.  Patch by
Ethan Furman.
..
.. bpo: 0
.. date: 9360
.. nonce: DO1sFa
.. section: Library
asyncio: ensure_future() now accepts awaitable objects.
..
.. bpo: 15348
.. date: 9359
.. nonce: d1Fg01
.. section: IDLE
Stop the debugger engine (normally in a user process) before closing the
debugger window (running in the IDLE process). This prevents the
RuntimeErrors that were being caught and ignored.
..
.. bpo: 24455
.. date: 9358
.. nonce: x6YqtE
.. section: IDLE
Prevent IDLE from hanging when a) closing the shell while the debugger is
active (15347); b) closing the debugger with the [X] button (15348); and c)
activating the debugger when already active (24455). The patch by Mark
Roseman does this by making two changes. 1. Suspend and resume the
gui.interaction method with the tcl vwait mechanism intended for this
purpose (instead of root.mainloop & .quit). 2. In gui.run, allow any
existing interaction to terminate first.
..
.. bpo: 0
.. date: 9357
.. nonce: Yp9LRY
.. section: IDLE
Change 'The program' to 'Your program' in an IDLE 'kill program?' message to
make it clearer that the program referred to is the currently running user
program, not IDLE itself.
..
.. bpo: 24750
.. date: 9356
.. nonce: xgsi-K
.. section: IDLE
Improve the appearance of the IDLE editor window status bar. Patch by Mark
Roseman.
..
.. bpo: 25313
.. date: 9355
.. nonce: xMXHpO
.. section: IDLE
Change the handling of new built-in text color themes to better address the
compatibility problem introduced by the addition of IDLE Dark. Consistently
use the revised idleConf.CurrentTheme everywhere in idlelib.
..
.. bpo: 24782
.. date: 9354
.. nonce: RgIPYE
.. section: IDLE
Extension configuration is now a tab in the IDLE Preferences dialog rather
than a separate dialog.  The former tabs are now a sorted list.  Patch by
Mark Roseman.
..
.. bpo: 22726
.. date: 9353
.. nonce: x8T0dA
.. section: IDLE
Re-activate the config dialog help button with some content about the other
buttons and the new IDLE Dark theme.
..
.. bpo: 24820
.. date: 9352
.. nonce: TFPJhr
.. section: IDLE
IDLE now has an 'IDLE Dark' built-in text color theme. It is more or less
IDLE Classic inverted, with a cobalt blue background. Strings, comments,
keywords, ... are still green, red, orange, ... . To use it with IDLEs
released before November 2015, hit the 'Save as New Custom Theme' button and
enter a new name, such as 'Custom Dark'.  The custom theme will work with
any IDLE release, and can be modified.
..
.. bpo: 25224
.. date: 9351
.. nonce: 5Llwo4
.. section: IDLE
README.txt is now an idlelib index for IDLE developers and curious users.
The previous user content is now in the IDLE doc chapter. 'IDLE' now means
'Integrated Development and Learning Environment'.
..
.. bpo: 24820
.. date: 9350
.. nonce: ZUz9Fn
.. section: IDLE
Users can now set breakpoint colors in Settings -> Custom Highlighting.
Original patch by Mark Roseman.
..
.. bpo: 24972
.. date: 9349
.. nonce: uc0uNo
.. section: IDLE
Inactive selection background now matches active selection background, as
configured by users, on all systems.  Found items are now always highlighted
on Windows.  Initial patch by Mark Roseman.
..
.. bpo: 24570
.. date: 9348
.. nonce: s3EkNn
.. section: IDLE
Idle: make calltip and completion boxes appear on Macs affected by a tk
regression.  Initial patch by Mark Roseman.
..
.. bpo: 24988
.. date: 9347
.. nonce: tXqq4T
.. section: IDLE
Idle ScrolledList context menus (used in debugger) now work on Mac Aqua.
Patch by Mark Roseman.
..
.. bpo: 24801
.. date: 9346
.. nonce: -bj_Ou
.. section: IDLE
Make right-click for context menu work on Mac Aqua. Patch by Mark Roseman.
..
.. bpo: 25173
.. date: 9345
.. nonce: EZzrPg
.. section: IDLE
Associate tkinter messageboxes with a specific widget. For Mac OSX, make
them a 'sheet'.  Patch by Mark Roseman.
..
.. bpo: 25198
.. date: 9344
.. nonce: -j_BV7
.. section: IDLE
Enhance the initial html viewer now used for Idle Help. Properly indent
fixed-pitch text (patch by Mark Roseman). Give code snippet a very
Sphinx-like light blueish-gray background. Re-use initial width and height
set by users for shell and editor. When the Table of Contents (TOC) menu is
used, put the section header at the top of the screen.
..
.. bpo: 25225
.. date: 9343
.. nonce: 9pvdq6
.. section: IDLE
Condense and rewrite Idle doc section on text colors.
..
.. bpo: 21995
.. date: 9342
.. nonce: C5Rmzx
.. section: IDLE
Explain some differences between IDLE and console Python.
..
.. bpo: 22820
.. date: 9341
.. nonce: hix_8X
.. section: IDLE
Explain need for *print* when running file from Idle editor.
..
.. bpo: 25224
.. date: 9340
.. nonce: UVMYQq
.. section: IDLE
Doc: augment Idle feature list and no-subprocess section.
..
.. bpo: 25219
.. date: 9339
.. nonce: 8_9DYg
.. section: IDLE
Update doc for Idle command line options. Some were missing and notes were
not correct.
..
.. bpo: 24861
.. date: 9338
.. nonce: Ecg2yT
.. section: IDLE
Most of idlelib is private and subject to change. Use idleib.idle.* to start
Idle. See idlelib.__init__.__doc__.
..
.. bpo: 25199
.. date: 9337
.. nonce: ih7yY3
.. section: IDLE
Idle: add synchronization comments for future maintainers.
..
.. bpo: 16893
.. date: 9336
.. nonce: bZtPgJ
.. section: IDLE
Replace help.txt with help.html for Idle doc display. The new
idlelib/help.html is rstripped Doc/build/html/library/idle.html. It looks
better than help.txt and will better document Idle as released. The tkinter
html viewer that works for this file was written by Mark Roseman. The now
unused EditorWindow.HelpDialog class and helt.txt file are deprecated.
..
.. bpo: 24199
.. date: 9335
.. nonce: VKnZEv
.. section: IDLE
Deprecate unused idlelib.idlever with possible removal in 3.6.
..
.. bpo: 24790
.. date: 9334
.. nonce: hD1hlj
.. section: IDLE
Remove extraneous code (which also create 2 & 3 conflicts).
..
.. bpo: 22558
.. date: 9333
.. nonce: Pk02YC
.. section: Documentation
Add remaining doc links to source code for Python-coded modules. Patch by
Yoni Lavi.
..
.. bpo: 12067
.. date: 9332
.. nonce: nLD2M-
.. section: Documentation
Rewrite Comparisons section in the Expressions chapter of the language
reference. Some of the details of comparing mixed types were incorrect or
ambiguous. NotImplemented is only relevant at a lower level than the
Expressions chapter. Added details of comparing range() objects, and default
behaviour and consistency suggestions for user-defined classes. Patch from
Andy Maier.
..
.. bpo: 24952
.. date: 9331
.. nonce: RHhFPE
.. section: Documentation
Clarify the default size argument of stack_size() in the "threading" and
"_thread" modules. Patch from Mattip.
..
.. bpo: 23725
.. date: 9330
.. nonce: 49TZ5f
.. section: Documentation
Overhaul tempfile docs. Note deprecated status of mktemp. Patch from
Zbigniew Jędrzejewski-Szmek.
..
.. bpo: 24808
.. date: 9329
.. nonce: MGjc3F
.. section: Documentation
Update the types of some PyTypeObject fields.  Patch by Joseph Weston.
..
.. bpo: 22812
.. date: 9328
.. nonce: kLCF0G
.. section: Documentation
Fix unittest discovery examples. Patch from Pam McA'Nulty.
..
.. bpo: 25449
.. date: 9327
.. nonce: MP6KNs
.. section: Tests
Added tests for OrderedDict subclasses.
..
.. bpo: 25099
.. date: 9326
.. nonce: tJQOWx
.. section: Tests
Make test_compileall not fail when an entry on sys.path cannot be written to
(commonly seen in administrative installs on Windows).
..
.. bpo: 23919
.. date: 9325
.. nonce: vJnjaq
.. section: Tests
Prevents assert dialogs appearing in the test suite.
..
.. bpo: 0
.. date: 9324
.. nonce: X-Bk5l
.. section: Tests
``PCbuild\rt.bat`` now accepts an unlimited number of arguments to pass
along to regrtest.py.  Previously there was a limit of 9.
..
.. bpo: 24915
.. date: 9323
.. nonce: PgD3Cx
.. section: Build
Add LLVM support for PGO builds and use the test suite to generate the
profile data. Initial patch by Alecsandru Patrascu of Intel.
..
.. bpo: 24910
.. date: 9322
.. nonce: ZZdfl0
.. section: Build
Windows MSIs now have unique display names.
..
.. bpo: 24986
.. date: 9321
.. nonce: 1WyXeU
.. section: Build
It is now possible to build Python on Windows without errors when external
libraries are not available.
..
.. bpo: 25450
.. date: 9320
.. nonce: X4xlWf
.. section: Windows
Updates shortcuts to start Python in installation directory.
..
.. bpo: 25164
.. date: 9319
.. nonce: FHVOOA
.. section: Windows
Changes default all-users install directory to match per-user directory.
..
.. bpo: 25143
.. date: 9318
.. nonce: hmxsia
.. section: Windows
Improves installer error messages for unsupported platforms.
..
.. bpo: 25163
.. date: 9317
.. nonce: uCRe8H
.. section: Windows
Display correct directory in installer when using non-default settings.
..
.. bpo: 25361
.. date: 9316
.. nonce: GETaSY
.. section: Windows
Disables use of SSE2 instructions in Windows 32-bit build
..
.. bpo: 25089
.. date: 9315
.. nonce: n_YJgw
.. section: Windows
Adds logging to installer for case where launcher is not selected on
upgrade.
..
.. bpo: 25165
.. date: 9314
.. nonce: aUTN1e
.. section: Windows
Windows uninstallation should not remove launcher if other versions remain
..
.. bpo: 25112
.. date: 9313
.. nonce: frdKij
.. section: Windows
py.exe launcher is missing icons
..
.. bpo: 25102
.. date: 9312
.. nonce: 6y6Akl
.. section: Windows
Windows installer does not precompile for -O or -OO.
..
.. bpo: 25081
.. date: 9311
.. nonce: dcRCTO
.. section: Windows
Makes Back button in installer go back to upgrade page when upgrading.
..
.. bpo: 25091
.. date: 9310
.. nonce: 1u-VKy
.. section: Windows
Increases font size of the installer.
..
.. bpo: 25126
.. date: 9309
.. nonce: ANx3DW
.. section: Windows
Clarifies that the non-web installer will download some components.
..
.. bpo: 25213
.. date: 9308
.. nonce: KGmXoe
.. section: Windows
Restores requestedExecutionLevel to manifest to disable UAC virtualization.
..
.. bpo: 25022
.. date: 9307
.. nonce: vAt_zr
.. section: Windows
Removed very outdated PC/example_nt/ directory.
..
.. bpo: 25440
.. date: 9306
.. nonce: 5xhyGr
.. section: Tools/Demos
Fix output of python-config --extension-suffix.

.. date: 2025-11-04-19-20-05
.. gh-issue: 140849
.. nonce: YjB2ZZ
.. release date: 2025-11-18
.. section: Windows
Update bundled liblzma to version 5.8.1.
..
.. date: 2025-11-12-12-54-28
.. gh-issue: 141442
.. nonce: 50dS3P
.. section: Tools/Demos
The iOS testbed now correctly handles test arguments that contain spaces.
..
.. date: 2025-10-29-15-20-19
.. gh-issue: 140702
.. nonce: ZXtW8h
.. section: Tools/Demos
The iOS testbed app will now expose the ``GITHUB_ACTIONS`` environment
variable to iOS apps being tested.
..
.. date: 2025-09-21-10-30-08
.. gh-issue: 139198
.. nonce: Fm7NfU
.. section: Tools/Demos
Remove ``Tools/scripts/checkpip.py`` script.
..
.. date: 2025-09-20-20-31-54
.. gh-issue: 139188
.. nonce: zfcxkW
.. section: Tools/Demos
Remove ``Tools/tz/zdump.py`` script.
..
.. date: 2025-10-23-16-39-49
.. gh-issue: 140482
.. nonce: ZMtyeD
.. section: Tests
Preserve and restore the state of ``stty echo`` as part of the test
environment.
..
.. date: 2025-10-15-00-52-12
.. gh-issue: 140082
.. nonce: fpET50
.. section: Tests
Update ``python -m test`` to set ``FORCE_COLOR=1`` when being run with color
enabled so that :mod:`unittest` which is run by it with redirected output
will output in color.
..
.. date: 2025-07-09-21-45-51
.. gh-issue: 136442
.. nonce: jlbklP
.. section: Tests
Use exitcode ``1`` instead of ``5`` if :func:`unittest.TestCase.setUpClass`
raises an exception
..
.. date: 2025-08-15-23-08-44
.. gh-issue: 137836
.. nonce: b55rhh
.. section: Security
Add support of the "plaintext" element, RAWTEXT elements "xmp", "iframe",
"noembed" and "noframes", and optionally RAWTEXT element "noscript" in
:class:`html.parser.HTMLParser`.
..
.. date: 2025-06-28-13-23-53
.. gh-issue: 136063
.. nonce: aGk0Jv
.. section: Security
:mod:`email.message`: ensure linear complexity for legacy HTTP parameters
parsing. Patch by Bénédikt Tran.
..
.. date: 2025-05-30-22-33-27
.. gh-issue: 136065
.. nonce: bu337o
.. section: Security
Fix quadratic complexity in :func:`os.path.expandvars`.
..
.. date: 2025-11-14-16-24-20
.. gh-issue: 141497
.. nonce: L_CxDJ
.. section: Library
:mod:`ipaddress`: ensure that the methods :meth:`IPv4Network.hosts()
<ipaddress.IPv4Network.hosts>` and :meth:`IPv6Network.hosts()
<ipaddress.IPv6Network.hosts>` always return an iterator.
..
.. date: 2025-11-13-14-51-30
.. gh-issue: 140938
.. nonce: kXsHHv
.. section: Library
The :func:`statistics.stdev` and :func:`statistics.pstdev` functions now
raise a :exc:`ValueError` when the input contains an infinity or a NaN.
..
.. date: 2025-11-12-15-42-47
.. gh-issue: 124111
.. nonce: hTw4OE
.. section: Library
Updated Tcl threading configuration in :mod:`_tkinter` to assume that
threads are always available in Tcl 9 and later.
..
.. date: 2025-11-12-01-49-03
.. gh-issue: 137109
.. nonce: D6sq2B
.. section: Library
The :mod:`os.fork` and related forking APIs will no longer warn in the
common case where Linux or macOS platform APIs return the number of threads
in a process and find the answer to be 1 even when a
:func:`os.register_at_fork` ``after_in_parent=`` callback (re)starts a
thread.
..
.. date: 2025-11-10-01-47-18
.. gh-issue: 141314
.. nonce: baaa28
.. section: Library
Fix assertion failure in :meth:`io.TextIOWrapper.tell` when reading files
with standalone carriage return (``\r``) line endings.
..
.. date: 2025-11-09-18-55-13
.. gh-issue: 141311
.. nonce: qZ3swc
.. section: Library
Fix assertion failure in :func:`!io.BytesIO.readinto` and undefined behavior
arising when read position is above capcity in :class:`io.BytesIO`.
..
.. date: 2025-11-08-13-03-10
.. gh-issue: 87710
.. nonce: XJeZlP
.. section: Library
:mod:`mimetypes`: Update mime type for ``.ai`` files to ``application/pdf``.
..
.. date: 2025-11-07-12-25-46
.. gh-issue: 85524
.. nonce: 9SWFIC
.. section: Library
Update ``io.FileIO.readall``, an implementation of
:meth:`io.RawIOBase.readall`, to follow :class:`io.IOBase` guidelines and
raise :exc:`io.UnsupportedOperation` when a file is in "w" mode rather than
:exc:`OSError`
..
.. date: 2025-11-06-15-11-50
.. gh-issue: 141141
.. nonce: tgIfgH
.. section: Library
Fix a thread safety issue with :func:`base64.b85decode`. Contributed by
Benel Tayar.
..
.. date: 2025-11-04-20-08-41
.. gh-issue: 141018
.. nonce: d_oyOI
.. section: Library
:mod:`mimetypes`: Update ``.exe``, ``.dll``, ``.rtf`` and (when
``strict=False``) ``.jpg`` to their correct IANA mime type.
..
.. date: 2025-11-04-15-40-35
.. gh-issue: 137969
.. nonce: 9VZQVt
.. section: Library
Fix :meth:`annotationlib.ForwardRef.evaluate` returning
:class:`~annotationlib.ForwardRef` objects which don't update with new
globals.
..
.. date: 2025-11-04-12-16-13
.. gh-issue: 75593
.. nonce: EFVhKR
.. section: Library
Add support of :term:`path-like objects <path-like object>` and
:term:`bytes-like objects <bytes-like object>` in :func:`wave.open`.
..
.. date: 2025-11-03-16-23-54
.. gh-issue: 140797
.. nonce: DuFEeR
.. section: Library
The undocumented :class:`!re.Scanner` class now forbids regular expressions
containing capturing groups in its lexicon patterns. Patterns using
capturing groups could previously lead to crashes with segmentation fault.
Use non-capturing groups (?:...) instead.
..
.. date: 2025-11-03-05-38-31
.. gh-issue: 125115
.. nonce: jGS8MN
.. section: Library
Refactor the :mod:`pdb` parsing issue so positional arguments can pass
through intuitively.
..
.. date: 2025-11-02-19-23-32
.. gh-issue: 140815
.. nonce: McEG-T
.. section: Library
:mod:`faulthandler` now detects if a frame or a code object is invalid or
freed. Patch by Victor Stinner.
..
.. date: 2025-11-02-11-46-00
.. gh-issue: 100218
.. nonce: 9Ezfdq
.. section: Library
Correctly set :attr:`~OSError.errno` when :func:`socket.if_nametoindex` or
:func:`socket.if_indextoname` raise an :exc:`OSError`. Patch by Bénédikt
Tran.
..
.. date: 2025-11-02-09-37-22
.. gh-issue: 140734
.. nonce: f8gST9
.. section: Library
:mod:`multiprocessing`: fix off-by-one error when checking the length of a
temporary socket file path. Patch by Bénédikt Tran.
..
.. date: 2025-11-01-14-44-09
.. gh-issue: 140873
.. nonce: kfuc9B
.. section: Library
Add support of non-:term:`descriptor` callables in
:func:`functools.singledispatchmethod`.
..
.. date: 2025-11-01-00-36-14
.. gh-issue: 140874
.. nonce: eAWt3K
.. section: Library
Bump the version of pip bundled in ensurepip to version 25.3
..
.. date: 2025-11-01-00-34-53
.. gh-issue: 140826
.. nonce: JEDd7U
.. section: Library
Now :class:`!winreg.HKEYType` objects are compared by their underlying
Windows registry handle value instead of their object identity.
..
.. date: 2025-10-31-16-25-13
.. gh-issue: 140808
.. nonce: XBiQ4j
.. section: Library
The internal class ``mailbox._ProxyFile`` is no longer a parameterized
generic.
..
.. date: 2025-10-31-15-06-26
.. gh-issue: 140691
.. nonce: JzHGtg
.. section: Library
In :mod:`urllib.request`, when opening a FTP URL fails because a data
connection cannot be made, the control connection's socket is now closed to
avoid a :exc:`ResourceWarning`.
..
.. date: 2025-10-31-13-57-55
.. gh-issue: 103847
.. nonce: VM7TnW
.. section: Library
Fix hang when cancelling process created by
:func:`asyncio.create_subprocess_exec` or
:func:`asyncio.create_subprocess_shell`. Patch by Kumar Aditya.
..
.. date: 2025-10-30-15-33-07
.. gh-issue: 137821
.. nonce: 8_Iavt
.. section: Library
Convert ``_json`` module to use Argument Clinic. Patched by Yoonho Hann.
..
.. date: 2025-10-30-12-36-19
.. gh-issue: 140790
.. nonce: _3T6-N
.. section: Library
Initialize all Pdb's instance variables in ``__init__``,  remove some
hasattr/getattr
..
.. date: 2025-10-29-16-53-00
.. gh-issue: 140766
.. nonce: CNagKF
.. section: Library
Add :func:`enum.show_flag_values` and ``enum.bin`` to ``enum.__all__``.
..
.. date: 2025-10-29-16-12-41
.. gh-issue: 120057
.. nonce: qGj5Dl
.. section: Library
Add :func:`os.reload_environ` to ``os.__all__``.
..
.. date: 2025-10-29-09-40-10
.. gh-issue: 140741
.. nonce: L13UCV
.. section: Library
Fix ``profiling.sampling.sample()`` incorrectly handling a
:exc:`FileNotFoundError` or :exc:`PermissionError`.
..
.. date: 2025-10-28-17-43-51
.. gh-issue: 140228
.. nonce: 8kfHhO
.. section: Library
Avoid making unnecessary filesystem calls for frozen modules in
:mod:`linecache` when the global module cache is not present.
..
.. date: 2025-10-28-02-46-56
.. gh-issue: 139946
.. nonce: aN3_uY
.. section: Library
Error and warning keywords in ``argparse.ArgumentParser`` messages are now
colorized when color output is enabled, fixing a visual inconsistency in
which they remained plain text while other output was colorized.
..
.. date: 2025-10-27-18-29-42
.. gh-issue: 140590
.. nonce: LT9HHn
.. section: Library
Fix arguments checking for the :meth:`!functools.partial.__setstate__` that
may lead to internal state corruption and crash. Patch by Sergey Miryanov.
..
.. date: 2025-10-27-16-01-41
.. gh-issue: 125434
.. nonce: qy0uRA
.. section: Library
Display thread name in :mod:`faulthandler` on Windows. Patch by Victor
Stinner.
..
.. date: 2025-10-27-13-49-31
.. gh-issue: 140634
.. nonce: ULng9G
.. section: Library
Fix a reference counting bug in :meth:`!os.sched_param.__reduce__`.
..
.. date: 2025-10-27-00-40-49
.. gh-issue: 140650
.. nonce: DYJPJ9
.. section: Library
Fix an issue where closing :class:`io.BufferedWriter` could crash if the
closed attribute raised an exception on access or could not be converted to
a boolean.
..
.. date: 2025-10-26-16-24-12
.. gh-issue: 140633
.. nonce: ioayC1
.. section: Library
Ignore :exc:`AttributeError` when setting a module's ``__file__`` attribute
when loading an extension module packaged as Apple Framework.
..
.. date: 2025-10-25-22-55-07
.. gh-issue: 140601
.. nonce: In3MlS
.. section: Library
:func:`xml.etree.ElementTree.iterparse` now emits a :exc:`ResourceWarning`
when the iterator is not explicitly closed and was opened with a filename.
This helps developers identify and fix resource leaks. Patch by Osama
Abdelkader.
..
.. date: 2025-10-25-21-26-16
.. gh-issue: 140593
.. nonce: OxlLc9
.. section: Library
:mod:`xml.parsers.expat`: Fix a memory leak that could affect users with
:meth:`~xml.parsers.expat.xmlparser.ElementDeclHandler` set to a custom
element declaration handler. Patch by Sebastian Pipping.
..
.. date: 2025-10-25-21-04-00
.. gh-issue: 140607
.. nonce: oOZGxS
.. section: Library
Inside :meth:`io.RawIOBase.read`, validate that the count of bytes returned
by :meth:`io.RawIOBase.readinto` is valid (inside the provided buffer).
..
.. date: 2025-10-23-19-39-16
.. gh-issue: 138162
.. nonce: Znw5DN
.. section: Library
Fix :class:`logging.LoggerAdapter` with ``merge_extra=True`` and without the
*extra* argument.
..
.. date: 2025-10-23-13-42-15
.. gh-issue: 140481
.. nonce: XKxWpq
.. section: Library
Improve error message when trying to iterate a Tk widget, image or font.
..
.. date: 2025-10-23-12-12-22
.. gh-issue: 138774
.. nonce: mnh2gU
.. section: Library
:func:`ast.unparse` now generates full source code when handling
:class:`ast.Interpolation` nodes that do not have a specified source.
..
.. date: 2025-10-22-20-52-13
.. gh-issue: 140474
.. nonce: xIWlip
.. section: Library
Fix memory leak in :class:`array.array` when creating arrays from an empty
:class:`str` and the ``u`` type code.
..
.. date: 2025-10-22-12-56-57
.. gh-issue: 140448
.. nonce: GsEkXD
.. section: Library
Change the default of ``suggest_on_error`` to ``True`` in
``argparse.ArgumentParser``.
..
.. date: 2025-10-21-15-54-13
.. gh-issue: 137530
.. nonce: ZyIVUH
.. section: Library
:mod:`dataclasses` Fix annotations for generated ``__init__`` methods by
replacing the annotations that were in-line in the generated source code
with ``__annotate__`` functions attached to the methods.
..
.. date: 2025-10-20-12-33-49
.. gh-issue: 140348
.. nonce: SAKnQZ
.. section: Library
Fix regression in Python 3.14.0 where using the ``|`` operator on a
:class:`typing.Union` object combined with an object that is not a type
would raise an error.
..
.. date: 2025-10-18-15-20-25
.. gh-issue: 76007
.. nonce: SNUzRq
.. section: Library
:mod:`decimal`: Deprecate ``__version__`` and replace with
:data:`decimal.SPEC_VERSION`.
..
.. date: 2025-10-18-14-30-21
.. gh-issue: 76007
.. nonce: peEgcr
.. section: Library
Deprecate ``__version__`` from :mod:`imaplib`. Patch by Hugo van Kemenade.
..
.. date: 2025-10-17-23-58-11
.. gh-issue: 140272
.. nonce: lhY8uS
.. section: Library
Fix memory leak in the :meth:`!clear` method of the :mod:`dbm.gnu` database.
..
.. date: 2025-10-17-20-42-38
.. gh-issue: 129117
.. nonce: X9jr4p
.. section: Library
:mod:`unicodedata`: Add :func:`~unicodedata.isxidstart` and
:func:`~unicodedata.isxidcontinue` functions to check whether a character
can start or continue a `Unicode Standard Annex #31
<https://www.unicode.org/reports/tr31/>`_ identifier.
..
.. date: 2025-10-17-12-33-01
.. gh-issue: 140251
.. nonce: esM-OX
.. section: Library
Colorize the default import statement ``import asyncio`` in asyncio REPL.
..
.. date: 2025-10-16-22-49-16
.. gh-issue: 140212
.. nonce: llBNd0
.. section: Library
Calendar's HTML formatting now accepts year and month as options.
Previously, running ``python -m calendar -t html 2025 10`` would result in
an error message. It now generates an HTML document displaying the calendar
for the specified month. Contributed by Pål Grønås Drange.
..
.. date: 2025-10-16-17-17-20
.. gh-issue: 135801
.. nonce: faH3fa
.. section: Library
Improve filtering by module in :func:`warnings.warn_explicit` if no *module*
argument is passed. It now tests the module regular expression in the
warnings filter not only against the filename with ``.py`` stripped, but
also against module names constructed starting from different parent
directories of the filename (with ``/__init__.py``, ``.py`` and, on Windows,
``.pyw`` stripped).
..
.. date: 2025-10-16-16-10-11
.. gh-issue: 139707
.. nonce: zR6Qtn
.. section: Library
Improve :exc:`ModuleNotFoundError` error message when a :term:`standard
library` module is missing.
..
.. date: 2025-10-15-21-42-13
.. gh-issue: 140041
.. nonce: _Fka2j
.. section: Library
Fix import of :mod:`ctypes` on Android and Cygwin when ABI flags are
present.
..
.. date: 2025-10-15-20-47-04
.. gh-issue: 140120
.. nonce: 3gffZq
.. section: Library
Fixed a memory leak in :mod:`hmac` when it was using the hacl-star backend.
Discovered by ``@ashm-dev`` using AddressSanitizer.
..
.. date: 2025-10-15-17-23-51
.. gh-issue: 140141
.. nonce: j2mUDB
.. section: Library
The :py:class:`importlib.metadata.PackageNotFoundError` traceback raised
when ``importlib.metadata.Distribution.from_name`` cannot discover a
distribution no longer includes a transient :exc:`StopIteration` exception
trace.
Contributed by Bartosz Sławecki in :gh:`140142`.
..
.. date: 2025-10-15-15-10-34
.. gh-issue: 140166
.. nonce: NtxRez
.. section: Library
:mod:`mimetypes`: Per the `IANA assignment
<https://www.iana.org/assignments/media-types/application/texinfo>`_, update
the MIME type for the ``.texi`` and ``.texinfo`` file formats to
``application/texinfo``, instead of ``application/x-texinfo``.
..
.. date: 2025-10-15-02-26-50
.. gh-issue: 140135
.. nonce: 54JYfM
.. section: Library
Speed up :meth:`io.RawIOBase.readall` by using PyBytesWriter API (about 4x
faster)
..
.. date: 2025-10-14-20-27-06
.. gh-issue: 76007
.. nonce: 2NcUbo
.. section: Library
:mod:`zlib`: Deprecate ``__version__`` and schedule for removal in Python
3.20.
..
.. date: 2025-10-13-11-25-41
.. gh-issue: 136702
.. nonce: uvLGK1
.. section: Library
:mod:`encodings`: Deprecate passing a non-ascii *encoding* name to
:func:`encodings.normalize_encoding` and schedule removal of support for
Python 3.17.
..
.. date: 2025-10-11-09-07-06
.. gh-issue: 139940
.. nonce: g54efZ
.. section: Library
Print clearer error message when using ``pdb`` to attach to a non-existing
process.
..
.. date: 2025-10-02-22-29-00
.. gh-issue: 139462
.. nonce: VZXUHe
.. section: Library
When a child process in a :class:`concurrent.futures.ProcessPoolExecutor`
terminates abruptly, the resulting traceback will now tell you the PID and
exit code of the terminated process. Contributed by Jonathan Berg.
..
.. date: 2025-09-30-12-52-54
.. gh-issue: 63161
.. nonce: mECM1A
.. section: Library
Fix :func:`tokenize.detect_encoding`. Support non-UTF-8 shebang and comments
if non-UTF-8 encoding is specified. Detect decoding error for non-UTF-8
encoding. Detect null bytes in source code.
..
.. date: 2025-09-25-20-16-10
.. gh-issue: 101828
.. nonce: yTxJlJ
.. section: Library
Fix ``'shift_jisx0213'``, ``'shift_jis_2004'``, ``'euc_jisx0213'`` and
``'euc_jis_2004'`` codecs truncating null chars as they were treated as part
of multi-character sequences.
..
.. date: 2025-09-23-09-46-46
.. gh-issue: 139246
.. nonce: pzfM-w
.. section: Library
fix: paste zero-width in default repl width is wrong.
..
.. date: 2025-09-18-21-25-41
.. gh-issue: 83714
.. nonce: TQjDWZ
.. section: Library
Implement :func:`os.statx` on Linux kernel versions 4.11 and later with
glibc versions 2.28 and later.  Contributed by Jeffrey Bosboom and Victor
Stinner.
..
.. date: 2025-09-15-21-03-11
.. gh-issue: 138891
.. nonce: oZFdtR
.. section: Library
Fix ``SyntaxError`` when ``inspect.get_annotations(f, eval_str=True)`` is
called on a function annotated with a :pep:`646` ``star_expression``
..
.. date: 2025-09-13-12-19-17
.. gh-issue: 138859
.. nonce: PxjIoN
.. section: Library
Fix generic type parameterization raising a :exc:`TypeError` when omitting a
:class:`ParamSpec` that has a default which is not a list of types.
..
.. date: 2025-09-12-09-34-37
.. gh-issue: 138764
.. nonce: mokHoY
.. section: Library
Prevent :func:`annotationlib.call_annotate_function` from calling
``__annotate__`` functions that don't support ``VALUE_WITH_FAKE_GLOBALS`` in
a fake globals namespace with empty globals.
Make ``FORWARDREF`` and ``STRING`` annotations fall back to using ``VALUE``
annotations in the case that neither their own format, nor
``VALUE_WITH_FAKE_GLOBALS`` are supported.
..
.. date: 2025-09-11-15-03-37
.. gh-issue: 138775
.. nonce: w7rnSx
.. section: Library
Use of ``python -m`` with :mod:`base64` has been fixed to detect input from
a terminal so that it properly notices EOF.
..
.. date: 2025-09-03-20-18-39
.. gh-issue: 98896
.. nonce: tjez89
.. section: Library
Fix a failure in multiprocessing resource_tracker when SharedMemory names
contain colons. Patch by Rani Pinchuk.
..
.. date: 2025-09-03-18-26-07
.. gh-issue: 138425
.. nonce: cVE9Ho
.. section: Library
Fix partial evaluation of :class:`annotationlib.ForwardRef` objects which
rely on names defined as globals.
..
.. date: 2025-08-26-08-17-56
.. gh-issue: 138151
.. nonce: I6CdAk
.. section: Library
In :mod:`annotationlib`, improve evaluation of forward references to
nonlocal variables that are not yet defined when the annotations are
initially evaluated.
..
.. date: 2025-08-15-20-35-30
.. gh-issue: 69528
.. nonce: qc-Eh_
.. section: Library
The :attr:`~io.FileIO.mode` attribute of files opened in the ``'wb+'`` mode
is now ``'wb+'`` instead of ``'rb+'``.
..
.. date: 2025-08-11-04-52-18
.. gh-issue: 137627
.. nonce: Ku5Yi2
.. section: Library
Speed up :meth:`csv.Sniffer.sniff` delimiter detection by up to 1.6x.
..
.. date: 2025-07-14-09-33-17
.. gh-issue: 55531
.. nonce: Gt2e12
.. section: Library
:mod:`encodings`: Improve :func:`~encodings.normalize_encoding` performance
by implementing the function in C using the private
``_Py_normalize_encoding`` which has been modified to make lowercase
conversion optional.
..
.. date: 2025-07-01-04-57-57
.. gh-issue: 136057
.. nonce: 4-t596
.. section: Library
Fixed the bug in :mod:`pdb` and :mod:`bdb` where ``next`` and ``step`` can't
go over the line if a loop exists in the line.
..
.. date: 2025-06-29-22-01-00
.. gh-issue: 133390
.. nonce: I1DW_3
.. section: Library
Support table, index, trigger, view, column, function, and schema completion
for :mod:`sqlite3`'s :ref:`command-line interface <sqlite3-cli>`.
..
.. date: 2025-06-10-18-02-29
.. gh-issue: 135307
.. nonce: fXGrcK
.. section: Library
:mod:`email`: Fix exception in ``set_content()`` when encoding text and
max_line_length is set to ``0`` or ``None`` (unlimited).
..
.. date: 2025-05-10-15-10-54
.. gh-issue: 133789
.. nonce: I-ZlUX
.. section: Library
Fix unpickling of :mod:`pathlib` objects that were pickled in Python 3.13.
..
.. date: 2025-05-07-22-09-28
.. gh-issue: 133601
.. nonce: 9kUL3P
.. section: Library
Remove deprecated :func:`!typing.no_type_check_decorator`.
..
.. date: 2025-04-18-18-08-05
.. gh-issue: 132686
.. nonce: 6kV_Gs
.. section: Library
Add parameters *inherit_class_doc* and *fallback_to_class_doc* for
:func:`inspect.getdoc`.
..
.. date: 2025-03-12-18-57-10
.. gh-issue: 131116
.. nonce: uTpwXZ
.. section: Library
:func:`inspect.getdoc` now correctly returns an inherited docstring on
:class:`~functools.cached_property` objects if none is given in a subclass.
..
.. date: 2025-03-04-17-19-26
.. gh-issue: 130693
.. nonce: Kv01r8
.. section: Library
Add support for ``-nolinestop``, and ``-strictlimits`` options to
:meth:`!tkinter.Text.search`. Also add the :meth:`!tkinter.Text.search_all`
method for ``-all`` and ``-overlap`` options.
..
.. date: 2024-08-08-12-39-36
.. gh-issue: 122255
.. nonce: J_gU8Y
.. section: Library
In the :mod:`linecache` module and in the Python implementation of the
:mod:`warnings` module, a ``DeprecationWarning`` is issued when
``mod.__loader__`` differs from ``mod.__spec__.loader`` (like in the C
implementation of the :mod:`!warnings` module).
..
.. date: 2024-06-26-16-16-43
.. gh-issue: 121011
.. nonce: qW54eh
.. section: Library
:func:`math.log` now supports arbitrary large integer-like arguments in the
same way as arbitrary large integer arguments.
..
.. date: 2024-05-28-17-14-30
.. gh-issue: 119668
.. nonce: RrIGpn
.. section: Library
Publicly expose and document :class:`importlib.machinery.NamespacePath`.
..
.. date: 2023-03-21-10-59-40
.. gh-issue: 102431
.. nonce: eUDnf4
.. section: Library
Clarify constraints for "logical" arguments in methods of
:class:`decimal.Context`.
..
.. date: 2019-06-02-13-56-16
.. gh-issue: 81313
.. nonce: axawSH
.. section: Library
Add the :mod:`math.integer` module (:pep:`791`).
..
.. date: 2025-11-15-01-21-00
.. gh-issue: 141579
.. nonce: aB7cD9
.. section: Core and Builtins
Fix :func:`sys.activate_stack_trampoline` to properly support the
``perf_jit`` backend. Patch by Pablo Galindo.
..
.. date: 2025-11-14-16-25-15
.. gh-issue: 114203
.. nonce: n3tlQO
.. section: Core and Builtins
Skip locking if object is already locked by two-mutex critical section.
..
.. date: 2025-11-14-00-19-45
.. gh-issue: 141528
.. nonce: VWdax1
.. section: Core and Builtins
Suggest using :meth:`concurrent.interpreters.Interpreter.close` instead of
the private ``_interpreters.destroy`` function when warning about remaining
subinterpreters. Patch by Sergey Miryanov.
..
.. date: 2025-11-11-13-40-45
.. gh-issue: 141367
.. nonce: I5KY7F
.. section: Core and Builtins
Specialize ``CALL_LIST_APPEND`` instruction only for lists, not for list
subclasses, to avoid unnecessary deopt. Patch by Mikhail Efimov.
..
.. date: 2025-11-10-23-07-06
.. gh-issue: 141312
.. nonce: H-58GB
.. section: Core and Builtins
Fix the assertion failure in the ``__setstate__`` method of the range
iterator when a non-integer argument is passed. Patch by Sergey Miryanov.
..
.. date: 2025-11-05-19-50-37
.. gh-issue: 140643
.. nonce: QCEOqG
.. section: Core and Builtins
Add support for ``<GC>`` and ``<native>`` frames to
:mod:`!profiling.sampling` output to denote active garbage collection and
calls to native code.
..
.. date: 2025-11-04-12-18-06
.. gh-issue: 140942
.. nonce: GYns6n
.. section: Library
Add ``.cjs`` to :mod:`mimetypes` to give CommonJS modules a MIME type of
``application/node``.
..
.. date: 2025-11-04-04-57-24
.. gh-issue: 140479
.. nonce: lwQ2v2
.. section: Core and Builtins
Update JIT compilation to use LLVM 21 at build time.
..
.. date: 2025-11-03-17-21-38
.. gh-issue: 140939
.. nonce: FVboAw
.. section: Core and Builtins
Fix memory leak when :class:`bytearray` or :class:`bytes` is formated with
the ``%*b`` format with a large width that results in a :exc:`MemoryError`.
..
.. date: 2025-11-02-15-28-33
.. gh-issue: 140260
.. nonce: JNzlGz
.. section: Library
Fix :mod:`struct` data race in endian table initialization with
subinterpreters. Patch by Shamil Abdulaev.
..
.. date: 2025-11-02-12-47-38
.. gh-issue: 140530
.. nonce: S934bp
.. section: Core and Builtins
Fix a reference leak when ``raise exc from cause`` fails. Patch by Bénédikt
Tran.
..
.. date: 2025-10-31-14-03-42
.. gh-issue: 90344
.. nonce: gvZigO
.. section: Library
Replace :class:`io.IncrementalNewlineDecoder` with non incremental newline
decoders in codebase where :meth:`!io.IncrementalNewlineDecoder.decode` was
being called once.
..
.. date: 2025-10-29-20-59-10
.. gh-issue: 140373
.. nonce: -uoaPP
.. section: Core and Builtins
Correctly emit ``PY_UNWIND`` event when generator object is closed. Patch by
Mikhail Efimov.
..
.. date: 2025-10-29-11-31-59
.. gh-issue: 140729
.. nonce: t9JsNt
.. section: Core and Builtins
Fix pickling error in the sampling profiler when using
``concurrent.futures.ProcessPoolExecutor`` script can not be properly
pickled and executed in worker processes.
..
.. date: 2025-10-25-21-31-43
.. gh-issue: 131527
.. nonce: V-JVNP
.. section: Core and Builtins
Dynamic borrow checking for stackrefs is added to ``Py_STACKREF_DEBUG``
mode. Patch by Mikhail Efimov.
..
.. date: 2025-10-25-17-36-46
.. gh-issue: 140576
.. nonce: kj0SCY
.. section: Core and Builtins
Fixed crash in :func:`tokenize.generate_tokens` in case of specific
incorrect input. Patch by Mikhail Efimov.
..
.. date: 2025-10-25-07-25-52
.. gh-issue: 140544
.. nonce: lwjtQe
.. section: Core and Builtins
Speed up accessing interpreter state by caching it in a thread local
variable. Patch by Kumar Aditya.
..
.. date: 2025-10-24-20-42-33
.. gh-issue: 140551
.. nonce: -9swrl
.. section: Core and Builtins
Fixed crash in :class:`dict` if :meth:`dict.clear` is called at the lookup
stage. Patch by Mikhail Efimov and Inada Naoki.
..
.. date: 2025-10-24-20-16-42
.. gh-issue: 140517
.. nonce: cqun-K
.. section: Core and Builtins
Fixed a reference leak when iterating over the result of :func:`map` with
``strict=True`` when the input iterables have different lengths. Patch by
Mikhail Efimov.
..
.. date: 2025-10-24-14-29-12
.. gh-issue: 133467
.. nonce: A5d6TM
.. section: Core and Builtins
Fix race when updating :attr:`!type.__bases__` that could allow a read of
:attr:`!type.__base__` to observe an inconsistent value on the free threaded
build.
..
.. date: 2025-10-23-16-05-50
.. gh-issue: 140471
.. nonce: Ax_aXn
.. section: Core and Builtins
Fix potential buffer overflow in :class:`ast.AST` node initialization when
encountering malformed :attr:`~ast.AST._fields` containing non-:class:`str`.
..
.. date: 2025-10-22-23-26-37
.. gh-issue: 140443
.. nonce: wT5i1A
.. section: Library
The logarithm functions (such as :func:`math.log10` and :func:`math.log`)
may now produce slightly different results for extremely large integers that
cannot be converted to floats without overflow. These results are generally
more accurate, with reduced worst-case error and a tighter overall error
distribution.
..
.. date: 2025-10-22-17-22-22
.. gh-issue: 140431
.. nonce: m8D_A-
.. section: Core and Builtins
Fix a crash in Python's :term:`garbage collector <garbage collection>` due
to partially initialized :term:`coroutine` objects when coroutine origin
tracking depth is enabled (:func:`sys.set_coroutine_origin_tracking_depth`).
..
.. date: 2025-10-22-12-48-05
.. gh-issue: 140476
.. nonce: F3-d1P
.. section: Core and Builtins
Optimize :c:func:`PySet_Add` for :class:`frozenset` in :term:`free threaded
<free threading>` build.
..
.. date: 2025-10-22-11-30-16
.. gh-issue: 135904
.. nonce: 3WE5oW
.. section: Core and Builtins
Add special labels to the assembly created during stencil creation to
support relocations that the native object file format does not support.
Specifically, 19 bit branches for AArch64 in Mach-O object files.
..
.. date: 2025-10-21-09-20-03
.. gh-issue: 140398
.. nonce: SoABwJ
.. section: Library
Fix memory leaks in :mod:`readline` functions
:func:`~readline.read_init_file`, :func:`~readline.read_history_file`,
:func:`~readline.write_history_file`, and
:func:`~readline.append_history_file` when :c:func:`PySys_Audit` fails.
..
.. date: 2025-10-21-06-51-50
.. gh-issue: 140406
.. nonce: 0gJs8M
.. section: Core and Builtins
Fix memory leak when an object's :meth:`~object.__hash__` method returns an
object that isn't an :class:`int`.
..
.. date: 2025-10-20-11-24-36
.. gh-issue: 140358
.. nonce: UQuKdV
.. section: Core and Builtins
Restore elapsed time and unreachable object count in GC debug output. These
were inadvertently removed during a refactor of ``gc.c``. The debug log now
again reports elapsed collection time and the number of unreachable objects.
Contributed by Pål Grønås Drange.
..
.. date: 2025-10-19-10-32-28
.. gh-issue: 136895
.. nonce: HfsEh0
.. section: Core and Builtins
Update JIT compilation to use LLVM 20 at build time.
..
.. date: 2025-10-18-21-50-44
.. gh-issue: 139109
.. nonce: 9QQOzN
.. section: Core and Builtins
A new tracing frontend for the JIT compiler has been implemented. Patch by
Ken Jin. Design for CPython by Ken Jin, Mark Shannon and Brandt Bucher.
..
.. date: 2025-10-18-21-29-45
.. gh-issue: 140306
.. nonce: xS5CcS
.. section: Core and Builtins
Fix memory leaks in cross-interpreter channel operations and shared
namespace handling.
..
.. date: 2025-10-18-19-52-20
.. gh-issue: 116738
.. nonce: NLJW0L
.. section: Core and Builtins
Make _suggestions module thread-safe on the :term:`free threaded <free
threading>` build.
..
.. date: 2025-10-18-18-08-36
.. gh-issue: 140301
.. nonce: m-2HxC
.. section: Core and Builtins
Fix memory leak of ``PyConfig`` in subinterpreters.
..
.. date: 2025-10-17-20-23-19
.. gh-issue: 140257
.. nonce: 8Txmem
.. section: Core and Builtins
Fix data race between interpreter_clear() and take_gil() on eval_breaker
during finalization with daemon threads.
..
.. date: 2025-10-17-18-03-12
.. gh-issue: 139951
.. nonce: IdwM2O
.. section: Core and Builtins
Fixes a regression in GC performance for a growing heap composed mostly of
small tuples.
*  Counts number of actually tracked objects, instead of trackable objects.
This ensures that untracking tuples has the desired effect of reducing GC overhead.
*  Does not track most untrackable tuples during creation.
This prevents large numbers of small tuples causing excessive GCs.
..
.. date: 2025-10-17-14-38-10
.. gh-issue: 140253
.. nonce: gCqFaL
.. section: Core and Builtins
Wrong placement of a double-star pattern inside a mapping pattern now throws
a specialized syntax error. Contributed by Bartosz Sławecki in :gh:`140253`.
..
.. date: 2025-10-16-21-47-00
.. gh-issue: 140104
.. nonce: A8SQIm
.. section: Core and Builtins
Fix a bug with exception handling in the JIT. Patch by Ken Jin. Bug reported
by Daniel Diniz.
..
.. date: 2025-10-15-17-12-32
.. gh-issue: 140149
.. nonce: cy1m3d
.. section: Core and Builtins
Speed up parsing bytes literals concatenation by using PyBytesWriter API and
a single memory allocation (about 3x faster).
..
.. date: 2025-10-15-00-21-40
.. gh-issue: 140061
.. nonce: J0XeDV
.. section: Core and Builtins
Fixing the checking of whether an object is uniquely referenced to ensure
free-threaded compatibility. Patch by Sergey Miryanov.
..
.. date: 2025-10-14-20-18-31
.. gh-issue: 140080
.. nonce: 8ROjxW
.. section: Core and Builtins
Fix hang during finalization when attempting to call :mod:`atexit` handlers
under no memory.
..
.. date: 2025-10-14-18-24-16
.. gh-issue: 139871
.. nonce: SWtuUz
.. section: Core and Builtins
Update :class:`bytearray` to use a :class:`bytes` under the hood as its
buffer and add :meth:`bytearray.take_bytes` to take it out.
..
.. date: 2025-10-14-17-07-37
.. gh-issue: 140067
.. nonce: ID2gOm
.. section: Core and Builtins
Fix memory leak in sub-interpreter creation.
..
.. date: 2025-10-13-13-54-19
.. gh-issue: 139914
.. nonce: M-y_3E
.. section: Core and Builtins
Restore support for HP PA-RISC, which has an upwards-growing stack.
..
.. date: 2025-10-12-01-12-12
.. gh-issue: 139817
.. nonce: PAn-8Z
.. section: Core and Builtins
Attribute ``__qualname__`` is added to :class:`typing.TypeAliasType`. Patch
by Mikhail Efimov.
..
.. date: 2025-10-06-14-19-47
.. gh-issue: 135801
.. nonce: OhxEZS
.. section: Core and Builtins
Many functions related to compiling or parsing Python code, such as
:func:`compile`, :func:`ast.parse`, :func:`symtable.symtable`, and
:func:`importlib.abc.InspectLoader.source_to_code` now allow to specify the
module name. It is needed to unambiguous :ref:`filter <warning-filter>`
syntax warnings by module name.
..
.. date: 2025-10-06-10-03-37
.. gh-issue: 139640
.. nonce: gY5oTb2
.. section: Core and Builtins
:func:`ast.parse` no longer emits syntax warnings for
``return``/``break``/``continue`` in ``finally`` (see :pep:`765`) -- they
are only emitted during compilation.
..
.. date: 2025-10-06-10-03-37
.. gh-issue: 139640
.. nonce: gY5oTb
.. section: Core and Builtins
Fix swallowing some syntax warnings in different modules if they
accidentally have the same message and are emitted from the same line. Fix
duplicated warnings in the ``finally`` block.
..
.. date: 2025-10-03-17-51-43
.. gh-issue: 139475
.. nonce: _684ED
.. section: Core and Builtins
Changes in stackref debugging mode when ``Py_STACKREF_DEBUG`` is set. We use
the same pattern of refcounting for stackrefs as in production build.
..
.. date: 2025-09-23-21-01-12
.. gh-issue: 139269
.. nonce: 1rIaxy
.. section: Core and Builtins
Fix undefined behavior when using unaligned store in JIT's ``patch_*``
functions.
..
.. date: 2025-09-15-13-06-11
.. gh-issue: 138944
.. nonce: PeCgLb
.. section: Core and Builtins
Fix :exc:`SyntaxError` message when invalid syntax appears on the same line
as a valid ``import ... as ...`` or ``from ... import ... as ...``
statement. Patch by Brian Schubert.
..
.. date: 2025-09-13-01-23-25
.. gh-issue: 138857
.. nonce: YQ5gdc
.. section: Core and Builtins
Improve :exc:`SyntaxError` message for ``case`` keyword placed outside
:keyword:`match` body.
..
.. date: 2025-07-29-17-51-14
.. gh-issue: 131253
.. nonce: GpRjWy
.. section: Core and Builtins
Support the ``--enable-pystats`` build option for the free-threaded build.
..
.. date: 2025-07-08-00-41-46
.. gh-issue: 136327
.. nonce: 7AiTb_
.. section: Core and Builtins
Errors when calling functions with invalid values after ``*`` and ``**`` now
do not include the function name. Patch by Ilia Solin.
..
.. date: 2025-06-24-13-12-58
.. gh-issue: 134786
.. nonce: MF0VVk
.. section: Core and Builtins
If :c:macro:`Py_TPFLAGS_MANAGED_DICT` and
:c:macro:`Py_TPFLAGS_MANAGED_WEAKREF` are used, then
:c:macro:`Py_TPFLAGS_HAVE_GC` must be used as well.
..
.. date: 2025-11-10-11-26-26
.. gh-issue: 141341
.. nonce: OsO6-y
.. section: C API
On Windows, rename the ``COMPILER`` macro to ``_Py_COMPILER`` to avoid name
conflicts. Patch by Victor Stinner.
..
.. date: 2025-11-08-10-51-50
.. gh-issue: 116146
.. nonce: pCmx6L
.. section: C API
Add a new :c:func:`PyImport_CreateModuleFromInitfunc` C-API for creating a
module from a *spec* and *initfunc*. Patch by Itamar Oren.
..
.. date: 2025-11-06-06-28-14
.. gh-issue: 141042
.. nonce: brOioJ
.. section: C API
Make qNaN in :c:func:`PyFloat_Pack2` and :c:func:`PyFloat_Pack4`, if while
conversion to a narrower precision floating-point format --- the remaining
after truncation payload will be zero.  Patch by Sergey B Kirpichev.
..
.. date: 2025-11-05-05-45-49
.. gh-issue: 141004
.. nonce: N9Ooh9
.. section: C API
:c:macro:`!Py_MATH_El` and :c:macro:`!Py_MATH_PIl` are deprecated.
..
.. date: 2025-11-05-04-38-16
.. gh-issue: 141004
.. nonce: rJL43P
.. section: C API
The :c:macro:`!Py_INFINITY` macro is :term:`soft deprecated`.
..
.. date: 2025-10-26-16-45-28
.. gh-issue: 140556
.. nonce: s__Dae
.. section: C API
:pep:`793`: Add a new entry point for C extension modules,
``PyModExport_<modulename>``.
..
.. date: 2025-10-26-16-45-06
.. gh-issue: 140487
.. nonce: fGOqss
.. section: C API
Fix :c:macro:`Py_RETURN_NOTIMPLEMENTED` in limited C API 3.11 and older:
don't treat ``Py_NotImplemented`` as immortal. Patch by Victor Stinner.
..
.. date: 2025-10-15-15-59-59
.. gh-issue: 140153
.. nonce: BO7sH4
.. section: C API
Fix :c:func:`Py_REFCNT` definition on limited C API 3.11-3.13. Patch by
Victor Stinner.
..
.. date: 2025-10-06-22-17-47
.. gh-issue: 139653
.. nonce: 6-1MOd
.. section: C API
Add :c:func:`PyUnstable_ThreadState_SetStackProtection` and
:c:func:`PyUnstable_ThreadState_ResetStackProtection` functions to set the
stack protection base address and stack protection size of a Python thread
state. Patch by Victor Stinner.
..
.. date: 2025-10-31-13-20-16
.. gh-issue: 140454
.. nonce: gF6dCe
.. section: Build
When building the JIT, match the jit_stencils filename expectations in
Makefile with the generator script. This avoid needless JIT recompilation
during ``make install``.
..
.. date: 2025-10-29-12-30-38
.. gh-issue: 140768
.. nonce: ITYrzw
.. section: Build
Warn when the WASI SDK version doesn't match what's supported.
..
.. date: 2025-10-25-08-07-06
.. gh-issue: 140513
.. nonce: 6OhLTs
.. section: Build
Generate a clear compilation error when ``_Py_TAIL_CALL_INTERP`` is enabled
but either ``preserve_none`` or ``musttail`` is not supported.
..
.. date: 2025-10-22-12-44-07
.. gh-issue: 140475
.. nonce: OhzQbR
.. section: Build
Support WASI SDK 25.
..
.. date: 2025-10-17-11-33-45
.. gh-issue: 140239
.. nonce: _k-GgW
.. section: Build
Check ``statx`` availability only on Linux (including Android).
..
.. date: 2025-10-16-11-30-53
.. gh-issue: 140189
.. nonce: YCrUyt
.. section: Build
iOS builds were added to CI.
..
.. date: 2025-08-10-22-28-06
.. gh-issue: 137618
.. nonce: FdNvIE
.. section: Build
``PYTHON_FOR_REGEN`` now requires Python 3.10 to Python 3.15. Patch by Adam
Turner.

.. date: 2024-11-16-22-08-41
.. gh-issue: 126911
.. nonce: HchCZZ
.. release date: 2024-11-19
.. section: Windows
Update credits command output.
..
.. date: 2024-11-12-22-31-13
.. gh-issue: 118973
.. nonce: _lfxW6
.. section: Windows
Ensures the experimental free-threaded install includes the ``_tkinter``
module. The optional Tcl/Tk component must also be installed in order for
the module to work.
..
.. date: 2024-11-07-20-42-31
.. gh-issue: 126497
.. nonce: EARpd-
.. section: Windows
Fixes venv failure due to missing redirector executables in experimental
free-threaded installs.
..
.. date: 2024-10-29-20-09-52
.. gh-issue: 126074
.. nonce: 83ZzZs
.. section: Windows
Removed unnecessary DLLs from Windows embeddable package
..
.. date: 2024-10-29-19-48-03
.. gh-issue: 125315
.. nonce: jdB9qN
.. section: Windows
Avoid crashing in :mod:`platform` due to slow WMI calls on some Windows
machines.
..
.. date: 2024-10-29-09-39-06
.. gh-issue: 126084
.. nonce: 3wAL8o
.. section: Windows
Fix venvwlauncher to launch pythonw instead of python so no extra console
window is created.
..
.. date: 2024-10-23-17-24-23
.. gh-issue: 125842
.. nonce: m3EF9E
.. section: Windows
Fix a :exc:`SystemError` when :func:`sys.exit` is called with ``0xffffffff``
on Windows.
..
.. date: 2024-10-15-21-28-43
.. gh-issue: 125550
.. nonce: hmGWCP
.. section: Windows
Enable the :ref:`launcher` to detect Python 3.14 installs from the Windows
Store.
..
.. date: 2024-09-07-15-16-24
.. gh-issue: 123803
.. nonce: J9VNQU
.. section: Windows
All Windows code pages are now supported as "cpXXX" codecs on Windows.
..
.. date: 2024-11-13-22-23-36
.. gh-issue: 126807
.. nonce: vpaWuN
.. section: Tools/Demos
Fix extraction warnings in :program:`pygettext.py` caused by mistaking
function definitions for function calls.
..
.. date: 2024-10-30-13-59-07
.. gh-issue: 126167
.. nonce: j5cCWE
.. section: Tools/Demos
The iOS testbed was modified so that it can be used by third-party projects
for testing purposes.
..
.. date: 2024-11-17-16-56-48
.. gh-issue: 126909
.. nonce: 60VTxW
.. section: Tests
Fix test_os extended attribute tests to work on filesystems with 1 KiB xattr
size limit.
..
.. date: 2024-10-21-14-10-56
.. gh-issue: 125730
.. nonce: kcWbvI
.. section: Tests
Change ``make test`` to not run GUI tests by default. Use ``make ci`` to run
tests with GUI tests instead.
..
.. date: 2024-09-30-22-52-44
.. gh-issue: 124295
.. nonce: VZy5kx
.. section: Tests
Add translation tests to the :mod:`argparse` module.
..
.. date: 2024-11-13-11-09-12
.. gh-issue: 126623
.. nonce: TO7NnR
.. section: Security
Upgrade libexpat to 2.6.4
..
.. date: 2024-11-18-15-33-25
.. gh-issue: 85957
.. nonce: 8gT3B-
.. section: Library
Add missing MIME types for images with RFCs: emf, fits, g3fax, jp2, jpm,
jpx, t38, tiff-fx and wmf. Patch by Hugo van Kemenade.
..
.. date: 2024-11-17-01-14-59
.. gh-issue: 126920
.. nonce: s8-f_L
.. section: Library
Fix the ``prefix`` and ``exec_prefix`` keys from
:py:func:`sysconfig.get_config_vars` incorrectly having the same value as
:py:const:`sys.base_prefix` and :py:const:`sys.base_exec_prefix`,
respectively, inside virtual environments. They now accurately reflect
:py:const:`sys.prefix` and :py:const:`sys.exec_prefix`.
..
.. date: 2024-11-14-22-25-49
.. gh-issue: 67877
.. nonce: G9hw0w
.. section: Library
Fix memory leaks when :mod:`regular expression <re>` matching terminates
abruptly, either because of a signal or because memory allocation fails.
..
.. date: 2024-11-14-13-16-20
.. gh-issue: 125063
.. nonce: kJ-WnH
.. section: Library
:mod:`marshal` now supports :class:`slice` objects. The marshal format
version was increased to 5.
..
.. date: 2024-11-13-22-25-57
.. gh-issue: 126789
.. nonce: lKzlc7
.. section: Library
Fixed the values of :py:func:`sysconfig.get_config_vars`,
:py:func:`sysconfig.get_paths`, and their siblings when the :py:mod:`site`
initialization happens after :py:mod:`sysconfig` has built a cache for
:py:func:`sysconfig.get_config_vars`.
..
.. date: 2024-11-13-20-03-18
.. gh-issue: 126188
.. nonce: RJLKk-
.. section: Library
Update bundled pip to 24.3.1
..
.. date: 2024-11-12-21-43-12
.. gh-issue: 126766
.. nonce: oi2KJ7
.. section: Library
Fix issue where :func:`urllib.request.url2pathname` failed to discard two
leading slashes introducing an empty authority section.
..
.. date: 2024-11-11-14-52-21
.. gh-issue: 126705
.. nonce: 0W7jFW
.. section: Library
Allow :class:`os.PathLike` to be a base for Protocols.
..
.. date: 2024-11-11-13-24-22
.. gh-issue: 126699
.. nonce: ONGbMd
.. section: Library
Allow :class:`collections.abc.AsyncIterator` to be a base for Protocols.
..
.. date: 2024-11-11-13-00-21
.. gh-issue: 126654
.. nonce: 4gfP2y
.. section: Library
Fix crash when non-dict was passed to several functions in ``_interpreters``
module.
..
.. date: 2024-11-10-18-14-51
.. gh-issue: 104745
.. nonce: zAa5Ke
.. section: Library
Limit starting a patcher (from :func:`unittest.mock.patch` or
:func:`unittest.mock.patch.object`) more than once without stopping it
..
.. date: 2024-11-09-10-31-10
.. gh-issue: 126595
.. nonce: A-7MyC
.. section: Library
Fix a crash when instantiating :class:`itertools.count` with an initial
count of :data:`sys.maxsize` on debug builds. Patch by Bénédikt Tran.
..
.. date: 2024-11-08-17-05-10
.. gh-issue: 120423
.. nonce: 7rdLVV
.. section: Library
Fix issue where :func:`urllib.request.pathname2url` mishandled Windows paths
with embedded forward slashes.
..
.. date: 2024-11-08-11-06-14
.. gh-issue: 126565
.. nonce: dFFO22
.. section: Library
Improve performances of :meth:`zipfile.Path.open` for non-reading modes.
..
.. date: 2024-11-07-22-41-47
.. gh-issue: 126505
.. nonce: iztYE1
.. section: Library
Fix bugs in compiling case-insensitive :mod:`regular expressions <re>` with
character classes containing non-BMP characters: upper-case non-BMP
character did was ignored and the ASCII flag was ignored when matching a
character range whose upper bound is beyond the BMP region.
..
.. date: 2024-11-07-01-40-11
.. gh-issue: 117378
.. nonce: o9O5uM
.. section: Library
Fixed the :mod:`multiprocessing` ``"forkserver"`` start method forkserver
process to correctly inherit the parent's :data:`sys.path` during the
importing of :func:`multiprocessing.set_forkserver_preload` modules in the
same manner as :data:`sys.path` is configured in workers before executing
work items.
This bug caused some forkserver module preloading to silently fail to
preload. This manifested as a performance degradation in child processes when
the ``sys.path`` was required due to additional repeated work in every
worker.
It could also have a side effect of ``""`` remaining in :data:`sys.path`
during forkserver preload imports instead of the absolute path from
:func:`os.getcwd` at multiprocessing import time used in the worker
``sys.path``.
The ``sys.path`` differences between phases in the child process could
potentially have caused preload to import incorrect things from the wrong
location.  We are unaware of that actually having happened in practice.
..
.. date: 2024-11-06-23-40-28
.. gh-issue: 125679
.. nonce: Qq9xF5
.. section: Library
The :class:`multiprocessing.Lock` and :class:`multiprocessing.RLock`
``repr`` values no longer say "unknown" on macOS.
..
.. date: 2024-11-06-18-30-50
.. gh-issue: 126476
.. nonce: F1wh3c
.. section: Library
Raise :class:`calendar.IllegalMonthError` (now a subclass of
:class:`IndexError`) for :func:`calendar.month` when the input month is not
correct.
..
.. date: 2024-11-06-13-41-38
.. gh-issue: 126489
.. nonce: toaf-0
.. section: Library
The Python implementation of :mod:`pickle` no longer calls
:meth:`pickle.Pickler.persistent_id` for the result of
:meth:`!persistent_id`.
..
.. date: 2024-11-05-11-28-45
.. gh-issue: 126451
.. nonce: XJMtqz
.. section: Library
Register the :class:`contextvars.Context` type to
:class:`collections.abc.Mapping`.
..
.. date: 2024-11-05-09-54-49
.. gh-issue: 126175
.. nonce: spnjJr
.. section: Library
Add ``msg``, ``doc``, ``pos``, ``lineno`` and ``colno`` attributes to
:exc:`tomllib.TOMLDecodeError`. Deprecate instantiating with free-form
arguments.
..
.. date: 2024-11-04-22-53-09
.. gh-issue: 89416
.. nonce: YVQaas
.. section: Library
Add :rfc:`9559` MIME types for Matroska audiovisual container formats. Patch
by Hugo van Kemenade.
..
.. date: 2024-11-04-16-40-02
.. gh-issue: 126417
.. nonce: OWPqn0
.. section: Library
Register the :class:`!multiprocessing.managers.DictProxy` and
:class:`!multiprocessing.managers.ListProxy` types in
:mod:`multiprocessing.managers` to :class:`collections.abc.MutableMapping`
and :class:`collections.abc.MutableSequence`, respectively.
..
.. date: 2024-11-04-13-16-18
.. gh-issue: 126390
.. nonce: Cxvqa5
.. section: Library
Add support for returning intermixed options and non-option arguments in
order in :func:`getopt.gnu_getopt`.
..
.. date: 2024-11-03-23-25-07
.. gh-issue: 126374
.. nonce: Xu_THP
.. section: Library
Add support for options with optional arguments in the :mod:`getopt` module.
..
.. date: 2024-11-03-14-43-51
.. gh-issue: 126363
.. nonce: Xus7vU
.. section: Library
Speed up pattern parsing in :meth:`pathlib.Path.glob` by skipping creation
of a :class:`pathlib.Path` object for the pattern.
..
.. date: 2024-11-03-10-48-07
.. gh-issue: 126353
.. nonce: ChDzot
.. section: Library
:func:`asyncio.get_event_loop` now does not implicitly creates an event
loop. It now raises a :exc:`RuntimeError` if there is no set event loop.
Patch by Kumar Aditya.
..
.. date: 2024-11-03-09-42-42
.. gh-issue: 126313
.. nonce: EFP6Dl
.. section: Library
Fix an issue in :func:`curses.napms` when :func:`curses.initscr` has not yet
been called. Patch by Bénédikt Tran.
..
.. date: 2024-11-02-19-20-44
.. gh-issue: 126303
.. nonce: yVvyWB
.. section: Library
Fix pickling and copying of :class:`os.sched_param` objects.
..
.. date: 2024-11-01-14-31-41
.. gh-issue: 126138
.. nonce: yTniOG
.. section: Library
Fix a use-after-free crash on :class:`asyncio.Task` objects whose underlying
coroutine yields an object that implements an evil
:meth:`~object.__getattribute__`. Patch by Nico Posada.
..
.. date: 2024-11-01-10-35-49
.. gh-issue: 120057
.. nonce: YWy81Q
.. section: Library
Replace the ``os.environ.refresh()`` method with a new
:func:`os.reload_environ` function. Patch by Victor Stinner.
..
.. date: 2024-10-31-14-06-28
.. gh-issue: 126220
.. nonce: uJAJCU
.. section: Library
Fix crash in :class:`!cProfile.Profile` and :class:`!_lsprof.Profiler` when
their callbacks were directly called with 0 arguments.
..
.. date: 2024-10-30-23-59-36
.. gh-issue: 126212
.. nonce: _9uYjT
.. section: Library
Fix issue where :func:`urllib.request.pathname2url` and
:func:`~urllib.request.url2pathname` removed slashes from Windows DOS drive
paths and URLs.
..
.. date: 2024-10-30-23-42-44
.. gh-issue: 126223
.. nonce: k2qooc
.. section: Library
Raise a :exc:`UnicodeEncodeError` instead of a :exc:`SystemError` upon
calling :func:`!_interpreters.create` with an invalid Unicode character.
..
.. date: 2024-10-30-20-45-17
.. gh-issue: 126205
.. nonce: CHEmtx
.. section: Library
Fix issue where :func:`urllib.request.pathname2url` generated URLs beginning
with four slashes (rather than two) when given a Windows UNC path.
..
.. date: 2024-10-30-00-12-22
.. gh-issue: 126156
.. nonce: BOSqv0
.. section: Library
Improved performances of creating :py:class:`~http.cookies.Morsel` objects
by a factor of 3.8x.
..
.. date: 2024-10-29-11-45-44
.. gh-issue: 126105
.. nonce: cOL-R6
.. section: Library
Fix a crash in :mod:`ast` when the :attr:`ast.AST._fields` attribute is
deleted.
..
.. date: 2024-10-29-10-58-52
.. gh-issue: 126106
.. nonce: rlF798
.. section: Library
Fixes a possible ``NULL`` pointer dereference in :mod:`ssl`.
..
.. date: 2024-10-29-10-38-28
.. gh-issue: 126080
.. nonce: qKRBuo
.. section: Library
Fix a use-after-free crash on :class:`asyncio.Task` objects for which the
underlying event loop implements an evil :meth:`~object.__getattribute__`.
Reported by Nico-Posada. Patch by Bénédikt Tran.
..
.. date: 2024-10-29-07-24-52
.. gh-issue: 125322
.. nonce: sstOM-
.. section: Library
Correct detection of complex numbers support in libffi.
..
.. date: 2024-10-28-22-35-22
.. gh-issue: 126083
.. nonce: TuI--n
.. section: Library
Fixed a reference leak in :class:`asyncio.Task` objects when reinitializing
the same object with a non-``None`` context. Patch by Nico Posada.
..
.. date: 2024-10-28-11-33-59
.. gh-issue: 126068
.. nonce: Pdznm_
.. section: Library
Fix exceptions in the :mod:`argparse` module so that only error messages for
ArgumentError and ArgumentTypeError are now translated. ArgumentError is now
only used for command line errors, not for logical errors in the program.
TypeError is now raised instead of ValueError for some logical errors.
..
.. date: 2024-10-28-01-24-52
.. gh-issue: 125413
.. nonce: Jat5kq
.. section: Library
Add :meth:`!pathlib.Path.scandir` method to efficiently fetch directory
children and their file attributes. This is a trivial wrapper of
:func:`os.scandir`.
..
.. date: 2024-10-26-12-50-48
.. gh-issue: 125984
.. nonce: d4vp5_
.. section: Library
Fix use-after-free crashes on :class:`asyncio.Future` objects for which the
underlying event loop implements an evil :meth:`~object.__getattribute__`.
Reported by Nico-Posada. Patch by Bénédikt Tran.
..
.. date: 2024-10-25-20-52-15
.. gh-issue: 125926
.. nonce: pp8rtZ
.. section: Library
Fix :func:`urllib.parse.urljoin` for base URI with undefined authority.
Although :rfc:`3986` only specify reference resolution for absolute base
URI, :func:`!urljoin` should continue to return sensible result for relative
base URI.
..
.. date: 2024-10-25-11-13-24
.. gh-issue: 125969
.. nonce: YvbrTr
.. section: Library
Fix an out-of-bounds crash when an evil :meth:`asyncio.loop.call_soon`
mutates the length of the internal callbacks list. Patch by Bénédikt Tran.
..
.. date: 2024-10-25-10-53-56
.. gh-issue: 125966
.. nonce: eOCYU_
.. section: Library
Fix a use-after-free crash in :meth:`asyncio.Future.remove_done_callback`.
Patch by Bénédikt Tran.
..
.. date: 2024-10-24-14-08-10
.. gh-issue: 125789
.. nonce: eaiAMw
.. section: Library
Fix possible crash when mutating list of callbacks returned by
:attr:`!asyncio.Future._callbacks`. It now always returns a new copy in C
implementation :mod:`!_asyncio`. Patch by Kumar Aditya.
..
.. date: 2024-10-24-13-40-20
.. gh-issue: 126916
.. nonce: MAgz6D
.. section: Library
Allow the *initial* parameter of :func:`functools.reduce` to be passed as a
keyword argument. Patch by Sayandip Dutta.
..
.. date: 2024-10-24-10-49-47
.. gh-issue: 124452
.. nonce: eqTRgx
.. section: Library
Fix an issue in :meth:`email.policy.EmailPolicy.header_source_parse` and
:meth:`email.policy.Compat32.header_source_parse` that introduced spurious
leading whitespaces into header values when the header includes a newline
character after the header name delimiter (``:``) and before the value.
..
.. date: 2024-10-23-20-44-30
.. gh-issue: 117941
.. nonce: Y9jdlW
.. section: Library
:class:`!argparse.BooleanOptionalAction` now rejects option names starting
with ``--no-``.
..
.. date: 2024-10-23-17-45-40
.. gh-issue: 125884
.. nonce: 41E_PD
.. section: Library
Fixed the bug for :mod:`pdb` where it can't set breakpoints on functions
with certain annotations.
..
.. date: 2024-10-22-13-28-00
.. gh-issue: 125355
.. nonce: zssHm_
.. section: Library
Fix several bugs in :meth:`argparse.ArgumentParser.parse_intermixed_args`.
* The parser no longer changes temporarily during parsing.
* Default values are not processed twice.
* Required mutually exclusive groups containing positional arguments are now supported.
* The missing arguments report now includes the names of all required optional and positional arguments.
* Unknown options can be intermixed with positional arguments in parse_known_intermixed_args().
..
.. date: 2024-10-21-13-52-37
.. gh-issue: 125767
.. nonce: 0kK4lX
.. section: Library
:class:`super` objects are now :mod:`pickleable <pickle>` and :mod:`copyable
<copy>`.
..
.. date: 2024-10-21-12-06-55
.. gh-issue: 124969
.. nonce: xiY8UP
.. section: Library
``locale.nl_langinfo(locale.ALT_DIGITS)`` now returns a string again. The
returned value consists of up to 100 semicolon-separated symbols.
..
.. date: 2024-10-20-00-56-44
.. gh-issue: 84850
.. nonce: p5TeUB
.. section: Library
Remove :class:`!URLopener` and :class:`!FancyURLopener` classes from
:mod:`urllib.request`. They had previously raised :exc:`DeprecationWarning`
since Python 3.3.
..
.. date: 2024-10-19-16-06-52
.. gh-issue: 125666
.. nonce: jGfdCP
.. section: Library
Avoid the exiting the interpreter if a null byte is given as input in the
new REPL.
..
.. date: 2024-10-19-13-37-37
.. gh-issue: 125710
.. nonce: FyFAAr
.. section: Library
[Enum] fix hashable<->nonhashable comparisons for member values
..
.. date: 2024-10-19-11-06-06
.. gh-issue: 125631
.. nonce: BlhVvR
.. section: Library
Restore ability to set :attr:`~pickle.Pickler.persistent_id` and
:attr:`~pickle.Unpickler.persistent_load` attributes of instances of the
:class:`!Pickler` and :class:`!Unpickler` classes in the :mod:`pickle`
module.
..
.. date: 2024-10-19-01-30-40
.. gh-issue: 125378
.. nonce: WTosxX
.. section: Library
Fixed the bug in :mod:`pdb` where after a multi-line command, an empty line
repeats the first line of the multi-line command, instead of the full
command.
..
.. date: 2024-10-18-09-51-29
.. gh-issue: 125682
.. nonce: vsj4cU
.. section: Library
Reject non-ASCII digits in the Python implementation of :func:`json.loads`
conforming to the JSON specification.
..
.. date: 2024-10-18-08-58-10
.. gh-issue: 125660
.. nonce: sDdDqO
.. section: Library
Reject invalid unicode escapes for Python implementation of
:func:`json.loads`.
..
.. date: 2024-10-17-20-36-06
.. gh-issue: 52551
.. nonce: EIVNYY
.. section: Library
Use :c:func:`!wcsftime` to implement :func:`time.strftime` on Windows.
..
.. date: 2024-10-17-16-10-29
.. gh-issue: 125259
.. nonce: oMew0c
.. section: Library
Fix the notes removal logic for errors thrown in enum initialization.
..
.. date: 2024-10-17-04-52-00
.. gh-issue: 125633
.. nonce: lMck06
.. section: Library
Add function :func:`inspect.ispackage` to determine whether an object is a
:term:`package` or not.
..
.. date: 2024-10-16-22-45-50
.. gh-issue: 125614
.. nonce: 3OEo_Q
.. section: Library
In the :data:`~annotationlib.Format.FORWARDREF` format of
:mod:`annotationlib`, fix bug where nested expressions were not returned as
:class:`annotationlib.ForwardRef` format.
..
.. date: 2024-10-16-20-32-40
.. gh-issue: 125590
.. nonce: stHzOP
.. section: Library
Allow ``FrameLocalsProxy`` to delete and pop if the key is not a fast
variable.
..
.. date: 2024-10-16-15-55-50
.. gh-issue: 125600
.. nonce: yMsJx0
.. section: Library
Only show stale code warning in :mod:`pdb` when we display source code.
..
.. date: 2024-10-16-04-50-53
.. gh-issue: 125542
.. nonce: vZJ-Ns
.. section: Library
Deprecate passing keyword-only *prefix_chars* argument to
:meth:`argparse.ArgumentParser.add_argument_group`.
..
.. date: 2024-10-15-16-50-03
.. gh-issue: 125541
.. nonce: FfhmWo
.. section: Library
Pressing :kbd:`Ctrl-C` while blocked in :meth:`threading.Lock.acquire`,
:meth:`threading.RLock.acquire`, and :meth:`threading.Thread.join` now
interrupts the function call and raises a :exc:`KeyboardInterrupt` exception
on Windows, similar to how those functions behave on macOS and Linux.
..
.. date: 2024-10-15-14-01-03
.. gh-issue: 125519
.. nonce: TqGh6a
.. section: Library
Improve traceback if :func:`importlib.reload` is called with an object that
is not a module. Patch by Alex Waygood.
..
.. date: 2024-10-14-17-29-34
.. gh-issue: 125451
.. nonce: fmP3T9
.. section: Library
Fix deadlock when :class:`concurrent.futures.ProcessPoolExecutor` shuts down
concurrently with an error when feeding a job to a worker process.
..
.. date: 2024-10-14-02-07-44
.. gh-issue: 125115
.. nonce: IOf3ON
.. section: Library
Fixed a bug in :mod:`pdb` where arguments starting with ``-`` can't be
passed to the debugged script.
..
.. date: 2024-10-13-15-04-58
.. gh-issue: 125398
.. nonce: UW7Ndv
.. section: Library
Fix the conversion of the :envvar:`!VIRTUAL_ENV` path in the activate script
in :mod:`venv` when running in Git Bash for Windows.
..
.. date: 2024-10-11-00-40-13
.. gh-issue: 125245
.. nonce: 8vReM-
.. section: Library
Fix race condition when importing :mod:`collections.abc`, which could
incorrectly return an empty module.
..
.. date: 2024-10-09-17-07-33
.. gh-issue: 52551
.. nonce: PBakSY
.. section: Library
Fix encoding issues in :func:`time.strftime`, the
:meth:`~datetime.datetime.strftime` method of the :mod:`datetime` classes
:class:`~datetime.datetime`, :class:`~datetime.date` and
:class:`~datetime.time` and formatting of these classes. Characters not
encodable in the current locale are now acceptable in the format string.
Surrogate pairs and sequence of surrogatescape-encoded bytes are no longer
recombinated. Embedded null character no longer terminates the format
string.
..
.. date: 2024-10-04-22-43-48
.. gh-issue: 124984
.. nonce: xjMv9b
.. section: Library
Fixed thread safety in :mod:`ssl` in the free-threaded build. OpenSSL
operations are now protected by a per-object lock.
..
.. date: 2024-09-28-02-03-04
.. gh-issue: 124651
.. nonce: bLBGtH
.. section: Library
Properly quote template strings in :mod:`venv` activation scripts.
..
.. date: 2024-09-27-15-42-55
.. gh-issue: 124694
.. nonce: uUy32y
.. section: Library
We've added :class:`concurrent.futures.InterpreterPoolExecutor`, which
allows you to run code in multiple isolated interpreters.  This allows you
to circumvent the limitations of CPU-bound threads (due to the GIL). Patch
by Eric Snow.
This addition is unrelated to :pep:`734`.
..
.. date: 2024-09-27-13-10-17
.. gh-issue: 58032
.. nonce: 0aNAQ0
.. section: Library
Deprecate the :class:`argparse.FileType` type converter.
..
.. date: 2024-09-24-18-49-16
.. gh-issue: 99749
.. nonce: gBDJX7
.. section: Library
Adds a feature to optionally enable suggestions for argument choices and
subparser names if mistyped by the user.
..
.. date: 2024-09-24-18-16-59
.. gh-issue: 58956
.. nonce: 0wFrBR
.. section: Library
Fixed a bug in :mod:`pdb` where sometimes the breakpoint won't trigger if it
was set on a function which is already in the call stack.
..
.. date: 2024-09-17-10-38-26
.. gh-issue: 124111
.. nonce: Hd53VN
.. section: Library
The tkinter module can now be built to use either the new version 9.0.0 of
Tcl/Tk or the latest release 8.6.15 of Tcl/Tk 8.  Tcl/Tk 9 includes many
improvements, both to the Tcl language and to the appearance and utility of
the graphical user interface provided by Tk.
..
.. date: 2024-09-07-13-57-49
.. gh-issue: 80958
.. nonce: fVYnqV
.. section: Library
unittest discovery supports PEP 420 namespace packages as start directory
again.
..
.. date: 2024-08-28-19-27-35
.. gh-issue: 123370
.. nonce: SPZ9Ux
.. section: Library
Fix the canvas not clearing after running turtledemo clock.
..
.. date: 2024-08-22-12-12-35
.. gh-issue: 89083
.. nonce: b6zFh0
.. section: Library
Add :func:`uuid.uuid8` for generating UUIDv8 objects as specified in
:rfc:`9562`. Patch by Bénédikt Tran
..
.. date: 2024-08-01-11-15-55
.. gh-issue: 122549
.. nonce: ztV4Kz
.. section: Library
Add :func:`platform.invalidate_caches` to invalidate cached results.
..
.. date: 2024-07-23-02-24-50
.. gh-issue: 120754
.. nonce: nHb5mG
.. section: Library
Update unbounded ``read`` calls in :mod:`zipfile` to specify an explicit
``size`` putting a limit on how much data they may read. This also updates
handling around ZIP max comment size to match the standard instead of
reading comments that are one byte too long.
..
.. date: 2024-07-02-15-56-42
.. gh-issue: 121267
.. nonce: yFBWkh
.. section: Library
Improve the performance of :mod:`tarfile` when writing files, by caching
user names and group names.
..
.. date: 2024-06-06-04-06-05
.. gh-issue: 70764
.. nonce: 6511hw
.. section: Library
Fixed an issue where :func:`inspect.getclosurevars` would incorrectly
classify an attribute name as a global variable when the name exists both as
an attribute name and a global variable.
..
.. date: 2024-06-05-19-09-36
.. gh-issue: 118289
.. nonce: moL9_d
.. section: Library
:func:`!posixpath.realpath` now raises :exc:`NotADirectoryError` when
*strict* mode is enabled and a non-directory path with a trailing slash is
supplied.
..
.. date: 2024-06-02-11-48-19
.. gh-issue: 119826
.. nonce: N1obGa
.. section: Library
Always return an absolute path for :func:`os.path.abspath` on Windows.
..
.. date: 2024-05-28-14-35-23
.. gh-issue: 97850
.. nonce: dCtjel
.. section: Library
Remove deprecated :func:`!pkgutil.get_loader` and
:func:`!pkgutil.find_loader`.
..
.. date: 2024-05-13-10-09-41
.. gh-issue: 118986
.. nonce: -r4W9h
.. section: Library
Add :data:`!socket.IPV6_RECVERR` constant (available since Linux 2.2).
..
.. date: 2024-03-16-13-38-27
.. gh-issue: 116897
.. nonce: UDQTjp
.. section: Library
Accepting objects with false values (like ``0`` and ``[]``) except empty
strings, byte-like objects and ``None`` in :mod:`urllib.parse` functions
:func:`~urllib.parse.parse_qsl` and :func:`~urllib.parse.parse_qs` is now
deprecated.
..
.. date: 2023-10-26-16-36-22
.. gh-issue: 101955
.. nonce: Ixu3IF
.. section: Library
Fix SystemError when match regular expression pattern containing some
combination of possessive quantifier, alternative and capture group.
..
.. date: 2022-10-15-10-18-20
.. gh-issue: 71936
.. nonce: MzJjc_
.. section: Library
Fix a race condition in :class:`multiprocessing.pool.Pool`.
..
.. bpo: 46128
.. date: 2021-12-19-10-47-24
.. nonce: Qv3EK1
.. section: Library
Strip :class:`unittest.IsolatedAsyncioTestCase` stack frames from reported
stacktraces.
..
.. date: 2020-05-19-01-12-47
.. gh-issue: 84852
.. nonce: FEjHJW
.. section: Library
Add MIME types for MS Embedded OpenType, OpenType Layout, TrueType, WOFF 1.0
and 2.0 fonts. Patch by Sahil Prajapati and Hugo van Kemenade.
..
.. date: 2024-11-09-19-43-10
.. gh-issue: 126622
.. nonce: YacfDc
.. section: Documentation
Added stub pages for removed modules explaining their removal, where to find
replacements, and linking to the last Python version that supported them.
Contributed by Ned Batchelder.
..
.. date: 2024-10-10-23-46-54
.. gh-issue: 125277
.. nonce: QAby09
.. section: Documentation
Require Sphinx 7.2.6 or later to build the Python documentation. Patch by
Adam Turner.
..
.. date: 2023-03-28-22-24-45
.. gh-issue: 60712
.. nonce: So5uad
.. section: Documentation
Include the :class:`object` type in the lists of documented types. Change by
Furkan Onder and Martin Panter.
..
.. date: 2024-11-13-17-18-13
.. gh-issue: 126795
.. nonce: _JBX9e
.. section: Core and Builtins
Increase the threshold for JIT code warmup. Depending on platform and
workload, this can result in performance gains of 1-9% and memory savings of
3-5%.
..
.. date: 2024-11-12-19-24-00
.. gh-issue: 126341
.. nonce: 5SdAe1
.. section: Core and Builtins
Now :exc:`ValueError` is raised instead of :exc:`SystemError` when trying to
iterate over a released :class:`memoryview` object.
..
.. date: 2024-11-11-17-02-48
.. gh-issue: 126688
.. nonce: QiOXUi
.. section: Core and Builtins
Fix a crash when calling :func:`os.fork` on some operating systems,
including SerenityOS.
..
.. date: 2024-11-09-16-10-22
.. gh-issue: 126066
.. nonce: 9zs4m4
.. section: Library
Fix :mod:`importlib` to not write an incomplete .pyc files when a ulimit or
some other operating system mechanism is preventing the write to go through
fully.
..
.. date: 2024-11-06-16-34-11
.. gh-issue: 126222
.. nonce: 9NBfTn
.. section: Core and Builtins
Do not include count of "peek" items in ``_PyUop_num_popped``. This ensures
that the correct number of items are popped from the stack when a micro-op
exits with an error.
..
.. date: 2024-11-03-15-15-36
.. gh-issue: 126366
.. nonce: 8BBdGU
.. section: Core and Builtins
Fix crash when using ``yield from`` on an object that raises an exception in
its ``__iter__``.
..
.. date: 2024-11-02-18-01-31
.. gh-issue: 126209
.. nonce: 2ZIhrS
.. section: Library
Fix an issue with ``skip_file_prefixes`` parameter which resulted in an
inconsistent behaviour between the C and Python implementations of
:func:`warnings.warn`. Patch by Daehee Kim.
..
.. date: 2024-11-02-14-43-46
.. gh-issue: 126312
.. nonce: LMHzLT
.. section: Core and Builtins
Fix crash during garbage collection on an object frozen by :func:`gc.freeze`
on the free-threaded build.
..
.. date: 2024-11-01-09-58-06
.. gh-issue: 103951
.. nonce: 6qduwj
.. section: Core and Builtins
Relax optimization requirements to allow fast attribute access to module
subclasses.
..
.. date: 2024-10-31-21-49-00
.. gh-issue: 126072
.. nonce: o9k8Ns
.. section: Core and Builtins
Following :gh:`126101`, for :ref:`codeobjects` like lambda, annotation and
type alias, we no longer  add ``None`` to its :attr:`~codeobject.co_consts`.
..
.. date: 2024-10-30-18-16-10
.. gh-issue: 126195
.. nonce: 6ezBpr
.. section: Core and Builtins
Improve JIT performance by 1.4% on macOS Apple Silicon by using
platform-specific memory protection APIs. Patch by Diego Russo.
..
.. date: 2024-10-29-15-17-31
.. gh-issue: 126139
.. nonce: B4OQ8a
.. section: Core and Builtins
Provide better error location when attempting to use a :term:`future
statement <__future__>` with an unknown future feature.
..
.. date: 2024-10-29-10-37-39
.. gh-issue: 126072
.. nonce: XLKlxv
.. section: Core and Builtins
Add a new attribute in :attr:`~codeobject.co_flags` to indicate whether the
first item in :attr:`~codeobject.co_consts` is the docstring. If a code
object has no docstring, ``None`` will **NOT** be inserted.
..
.. date: 2024-10-28-13-18-16
.. gh-issue: 126076
.. nonce: MebZuS
.. section: Core and Builtins
Relocated objects such as ``tuple``, ``bytes`` and ``str`` objects are
properly tracked by :mod:`tracemalloc` and its associated hooks. Patch by
Pablo Galindo.
..
.. date: 2024-10-27-20-31-43
.. gh-issue: 90370
.. nonce: IP_W3a
.. section: Core and Builtins
Avoid temporary tuple creation for vararg in argument passing with Argument
Clinic generated code (if arguments either vararg or positional-only).
..
.. date: 2024-10-26-23-50-03
.. gh-issue: 126018
.. nonce: Hq-qcM
.. section: Core and Builtins
Fix a crash in :func:`sys.audit` when passing a non-string as first argument
and Python was compiled in debug mode.
..
.. date: 2024-10-26-13-32-48
.. gh-issue: 126012
.. nonce: 2KalhG
.. section: Core and Builtins
The :class:`memoryview` type now supports subscription, making it a
:term:`generic type`.
..
.. date: 2024-10-25-15-56-14
.. gh-issue: 125837
.. nonce: KlCdgD
.. section: Core and Builtins
Adds :opcode:`LOAD_SMALL_INT` and :opcode:`!LOAD_CONST_IMMORTAL`
instructions. ``LOAD_SMALL_INT`` pushes a small integer equal to the
``oparg`` to the stack. ``LOAD_CONST_IMMORTAL`` does the same as
``LOAD_CONST`` but is more efficient for immortal objects. Removes
``RETURN_CONST``  instruction.
..
.. date: 2024-10-24-22-43-03
.. gh-issue: 125942
.. nonce: 3UQht1
.. section: Core and Builtins
On Android, the ``errors`` setting of :any:`sys.stdout` was changed from
``surrogateescape`` to ``backslashreplace``.
..
.. date: 2024-10-23-14-42-27
.. gh-issue: 125859
.. nonce: m3EF9E
.. section: Core and Builtins
Fix a crash in the free threading build when :func:`gc.get_objects` or
:func:`gc.get_referrers` is called during an in-progress garbage collection.
..
.. date: 2024-10-23-14-05-47
.. gh-issue: 125868
.. nonce: uLfXYB
.. section: Core and Builtins
It was possible in 3.14.0a1 only for attribute lookup to give the wrong
value. This was due to an incorrect specialization in very specific
circumstances. This is fixed in 3.14.0a2.
..
.. date: 2024-10-22-04-18-53
.. gh-issue: 125498
.. nonce: cFjPIn
.. section: Core and Builtins
The JIT has been updated to leverage Clang 19’s new ``preserve_none``
attribute, which supports more platforms and is more useful than LLVM's
existing ``ghccc`` calling convention. This also removes the need to
manually patch the calling convention in LLVM IR, simplifying the JIT
compilation process.
..
.. date: 2024-10-18-16-00-10
.. gh-issue: 125703
.. nonce: QRoqMo
.. section: Core and Builtins
Correctly honour :mod:`tracemalloc` hooks in specialized ``Py_DECREF``
paths. Patch by Pablo Galindo
..
.. date: 2024-10-18-10-11-43
.. gh-issue: 125593
.. nonce: Q97m3A
.. section: Core and Builtins
Use color to highlight error locations in traceback from exception group
..
.. date: 2024-10-16-23-06-06
.. gh-issue: 125017
.. nonce: fcltj0
.. section: Core and Builtins
Fix crash on certain accesses to the ``__annotations__`` of
:class:`staticmethod` and :class:`classmethod` objects.
..
.. date: 2024-10-16-13-52-48
.. gh-issue: 125588
.. nonce: kCahyO
.. section: Core and Builtins
The Python PEG generator can now use f-strings in the grammar actions. Patch
by Pablo Galindo
..
.. date: 2024-10-16-12-12-39
.. gh-issue: 125444
.. nonce: 9tG2X6
.. section: Core and Builtins
Fix illegal instruction for older Arm architectures. Patch by Diego Russo,
testing by Ross Burton.
..
.. date: 2024-10-14-17-13-12
.. gh-issue: 118423
.. nonce: SkBoda
.. section: Core and Builtins
Add a new ``INSTRUCTION_SIZE`` macro to the cases generator which returns
the current instruction size.
..
.. date: 2024-10-09-13-53-50
.. gh-issue: 125038
.. nonce: ffSLCz
.. section: Core and Builtins
Fix crash when iterating over a generator expression after direct changes on
``gi_frame.f_locals``. Patch by Mikhail Efimov.
..
.. date: 2024-10-01-17-31-32
.. gh-issue: 124855
.. nonce: sdsv_H
.. section: Core and Builtins
Don't allow the JIT and perf support to be active at the same time. Patch by
Pablo Galindo
..
.. date: 2024-09-14-20-09-39
.. gh-issue: 123714
.. nonce: o1mbe4
.. section: Core and Builtins
Update JIT compilation to use LLVM 19
..
.. date: 2024-09-11-01-32-07
.. gh-issue: 123930
.. nonce: BkPfB6
.. section: Core and Builtins
Improve the error message when a script shadowing a module from the standard
library causes :exc:`ImportError` to be raised during a "from" import.
Similarly, improve the error message when a script shadowing a third party
module attempts to "from" import an attribute from that third party module
while still initialising.
..
.. date: 2024-06-13-19-12-49
.. gh-issue: 119793
.. nonce: FDVCDk
.. section: Core and Builtins
The :func:`map` built-in now has an optional keyword-only *strict* flag like
:func:`zip` to check that all the iterables are of equal length. Patch by
Wannes Boeykens.
..
.. date: 2024-05-12-03-10-36
.. gh-issue: 118950
.. nonce: 5Wc4vp
.. section: Library
Fix bug where SSLProtocol.connection_lost wasn't getting called when OSError
was thrown on writing to socket.
..
.. date: 2023-12-30-00-21-45
.. gh-issue: 113570
.. nonce: _XQgsW
.. section: Library
Fixed a bug in ``reprlib.repr`` where it incorrectly called the repr method
on shadowed Python built-in types.
..
.. date: 2024-11-07-20-24-58
.. gh-issue: 126554
.. nonce: ri12eb
.. section: C API
Fix error handling in :class:`ctypes.CDLL` objects which could result in a
crash in rare situations.
..
.. date: 2024-10-28-15-56-03
.. gh-issue: 126061
.. nonce: Py51_1
.. section: C API
Add :c:func:`PyLong_IsPositive`, :c:func:`PyLong_IsNegative` and
:c:func:`PyLong_IsZero` for checking if a :c:type:`PyLongObject` is
positive, negative, or zero, respectively.
..
.. date: 2024-10-16-19-28-23
.. gh-issue: 125608
.. nonce: gTsU2g
.. section: C API
Fix a bug where dictionary watchers (e.g., :c:func:`PyDict_Watch`) on an
object's attribute dictionary (:attr:`~object.__dict__`) were not triggered
when the object's attributes were modified.
..
.. date: 2024-09-03-13-33-33
.. gh-issue: 123619
.. nonce: HhgUUI
.. section: C API
Added the :c:func:`PyUnstable_Object_EnableDeferredRefcount` function for
enabling :pep:`703` deferred reference counting.
..
.. date: 2024-07-30-14-40-08
.. gh-issue: 121654
.. nonce: tgGeAl
.. section: C API
Add :c:func:`PyType_Freeze` function to make a type immutable. Patch by
Victor Stinner.
..
.. date: 2024-06-04-13-38-44
.. gh-issue: 120026
.. nonce: uhEvJ9
.. section: C API
The :c:macro:`!Py_HUGE_VAL` macro is :term:`soft deprecated`.
..
.. date: 2024-11-13-15-47-09
.. gh-issue: 126691
.. nonce: ni4K-b
.. section: Build
Removed the ``--with-emscripten-target`` configure flag. We unified the
``node`` and ``browser`` options and the same build can now be used,
independent of target runtime.
..
.. date: 2024-11-07-11-09-31
.. gh-issue: 123877
.. nonce: CVdd0b
.. section: Build
Use ``wasm32-wasip1`` as the target triple for WASI instead of
``wasm32-wasi``. The latter will eventually be reclaimed for WASI 1.0 while
CPython currently only supports WASI preview1.
..
.. date: 2024-11-06-11-12-04
.. gh-issue: 126458
.. nonce: 7vzHtx
.. section: Build
Disable SIMD support for HACL under WASI.
..
.. date: 2024-11-04-09-42-04
.. gh-issue: 89640
.. nonce: QBv05o
.. section: Build
Hard-code float word ordering as little endian on WASM.
..
.. date: 2024-10-31-15-37-05
.. gh-issue: 126206
.. nonce: oC6z2i
.. section: Build
``make clinic`` now runs Argument Clinic using the ``--force`` option, thus
forcefully regenerating generated code.
..
.. date: 2024-10-30-17-47-15
.. gh-issue: 126187
.. nonce: 0jFCZB
.. section: Build
Introduced ``Tools/wasm/emscripten.py`` to simplify doing Emscripten builds.
..
.. date: 2024-10-25-17-20-50
.. gh-issue: 124932
.. nonce: F-aNuS
.. section: Build
For cross builds, there is now support for having a different install
``prefix`` than the ``host_prefix`` used by ``getpath.py``. This is set to
``/`` by default for Emscripten, on other platforms the default behavior is
the same as before.
..
.. date: 2024-10-25-00-29-15
.. gh-issue: 125946
.. nonce: KPA3g0
.. section: Build
The minimum supported Android version is now 7.0 (API level 24).
..
.. date: 2024-10-24-22-14-35
.. gh-issue: 125940
.. nonce: 2wMtTA
.. section: Build
The Android build now supports `16 KB page sizes
<https://developer.android.com/guide/practices/page-sizes>`__.
..
.. date: 2024-10-16-09-37-51
.. gh-issue: 89640
.. nonce: UDsW-j
.. section: Build
Improve detection of float word ordering on Linux when link-time
optimizations are enabled.
..
.. date: 2024-10-04-17-29-23
.. gh-issue: 124928
.. nonce: FsGffe
.. section: Build
Emscripten builds now require node >= 18.
..
.. date: 2024-03-03-20-28-23
.. gh-issue: 115382
.. nonce: 97hJFE
.. section: Build
Fix cross compile failures when the host and target SOABIs match.

.. bpo: 33786
.. date: 2018-06-06-23-24-40
.. nonce: lBvT8z
.. release date: 2018-06-11
.. section: Core and Builtins
Fix asynchronous generators to handle GeneratorExit in athrow() correctly
..
.. bpo: 30654
.. date: 2018-05-28-12-28-53
.. nonce: 9fDJye
.. section: Core and Builtins
Fixed reset of the SIGINT handler to SIG_DFL on interpreter shutdown even
when there was a custom handler set previously. Patch by Philipp Kerling.
..
.. bpo: 33622
.. date: 2018-05-23-20-46-14
.. nonce: xPucO9
.. section: Core and Builtins
Fixed a leak when the garbage collector fails to add an object with the
``__del__`` method or referenced by it into the :data:`gc.garbage` list.
:c:func:`PyGC_Collect` can now be called when an exception is set and
preserves it.
..
.. bpo: 31849
.. date: 2018-05-14-11-00-00
.. nonce: EmHaH4
.. section: Core and Builtins
Fix signed/unsigned comparison warning in pyhash.c.
..
.. bpo: 33391
.. date: 2018-05-02-08-36-03
.. nonce: z4a7rb
.. section: Core and Builtins
Fix a leak in set_symmetric_difference().
..
.. bpo: 28055
.. date: 2018-04-25-20-44-42
.. nonce: f49kfC
.. section: Core and Builtins
Fix unaligned accesses in siphash24(). Patch by Rolf Eike Beer.
..
.. bpo: 33231
.. date: 2018-04-05-22-20-44
.. nonce: 3Jmo0q
.. section: Core and Builtins
Fix potential memory leak in ``normalizestring()``.
..
.. bpo: 29922
.. date: 2018-04-03-00-30-25
.. nonce: CdLuMl
.. section: Core and Builtins
Improved error messages in 'async with' when ``__aenter__()`` or
``__aexit__()`` return non-awaitable object.
..
.. bpo: 33199
.. date: 2018-04-02-09-32-40
.. nonce: TPnxQu
.. section: Core and Builtins
Fix ``ma_version_tag`` in dict implementation is uninitialized when copying
from key-sharing dict.
..
.. bpo: 33041
.. date: 2018-03-18-13-56-14
.. nonce: XwPhI2
.. section: Core and Builtins
Fixed jumping when the function contains an ``async for`` loop.
..
.. bpo: 32282
.. date: 2017-12-12-14-02-28
.. nonce: xFVMTn
.. section: Core and Builtins
Fix an unnecessary ifdef in the include of VersionHelpers.h in socketmodule
on Windows.
..
.. bpo: 21983
.. date: 2017-10-02-21-02-14
.. nonce: UoC319
.. section: Core and Builtins
Fix a crash in ``ctypes.cast()`` in case the type argument is a ctypes
structured data type. Patch by Eryk Sun and Oren Milman.
..
.. bpo: 30167
.. date: 2018-06-10-19-29-17
.. nonce: G5EgC5
.. section: Library
Prevent site.main() exception if PYTHONSTARTUP is set. Patch by Steve Weber.
..
.. bpo: 33812
.. date: 2018-06-10-13-26-02
.. nonce: frGAOr
.. section: Library
Datetime instance d with non-None tzinfo, but with d.tzinfo.utcoffset(d)
returning None is now treated as naive by the astimezone() method.
..
.. bpo: 30805
.. date: 2018-06-08-17-34-16
.. nonce: 3qCWa0
.. section: Library
Avoid race condition with debug logging
..
.. bpo: 33767
.. date: 2018-06-03-22-41-59
.. nonce: 2e82g3
.. section: Library
The concatenation (``+``) and repetition (``*``) sequence operations now
raise :exc:`TypeError` instead of :exc:`SystemError` when performed on
:class:`mmap.mmap` objects.  Patch by Zackery Spytz.
..
.. bpo: 32684
.. date: 2018-05-29-12-51-18
.. nonce: ZEIism
.. section: Library
Fix gather to propagate cancellation of itself even with return_exceptions.
..
.. bpo: 33674
.. date: 2018-05-28-22-49-59
.. nonce: 6LFFj7
.. section: Library
Fix a race condition in SSLProtocol.connection_made() of asyncio.sslproto:
start immediately the handshake instead of using call_soon(). Previously,
data_received() could be called before the handshake started, causing the
handshake to hang or fail.
..
.. bpo: 31647
.. date: 2018-05-28-18-40-26
.. nonce: s4Fad3
.. section: Library
Fixed bug where calling write_eof() on a _SelectorSocketTransport after it's
already closed raises AttributeError.
..
.. bpo: 33672
.. date: 2018-05-28-17-45-06
.. nonce: GM_Xm_
.. section: Library
Fix Task.__repr__ crash with Cython's bogus coroutines
..
.. bpo: 33469
.. date: 2018-05-28-15-55-12
.. nonce: hmXBpY
.. section: Library
Fix RuntimeError after closing loop that used run_in_executor
..
.. bpo: 11874
.. date: 2018-05-23-00-26-27
.. nonce: glK5iP
.. section: Library
Use a better regex when breaking usage into wrappable parts. Avoids bogus
assertion errors from custom metavar strings.
..
.. bpo: 30877
.. date: 2018-05-22-13-05-12
.. nonce: JZEGjI
.. section: Library
Fixed a bug in the Python implementation of the JSON decoder that prevented
the cache of parsed strings from clearing after finishing the decoding.
Based on patch by c-fos.
..
.. bpo: 33548
.. date: 2018-05-16-17-05-48
.. nonce: xWslmx
.. section: Library
tempfile._candidate_tempdir_list should consider common TEMP locations
..
.. bpo: 33542
.. date: 2018-05-16-09-30-27
.. nonce: idNAcs
.. section: Library
Prevent ``uuid.get_node`` from using a DUID instead of a MAC on Windows.
Patch by Zvi Effron
..
.. bpo: 26819
.. date: 2018-05-16-05-24-43
.. nonce: taxbVT
.. section: Library
Fix race condition with ``ReadTransport.resume_reading`` in Windows proactor
event loop.
..
.. bpo: 28556
.. date: 2018-05-10-14-51-19
.. nonce: y3zK6I
.. section: Library
Minor fixes in typing module: add annotations to ``NamedTuple.__new__``,
pass ``*args`` and ``**kwds`` in ``Generic.__new__``.  Original PRs by
Paulius Šarka and Chad Dombrova.
..
.. bpo: 20087
.. date: 2018-05-05-18-02-24
.. nonce: lJrvXL
.. section: Library
Updated alias mapping with glibc 2.27 supported locales.
..
.. bpo: 33422
.. date: 2018-05-05-09-53-05
.. nonce: 4FtQ0q
.. section: Library
Fix trailing quotation marks getting deleted when looking up byte/string
literals on pydoc. Patch by Andrés Delfino.
..
.. bpo: 33197
.. date: 2018-04-29-23-56-20
.. nonce: dgRLqr
.. section: Library
Update error message when constructing invalid inspect.Parameters Patch by
Donghee Na.
..
.. bpo: 33383
.. date: 2018-04-29-11-15-38
.. nonce: g32YWn
.. section: Library
Fixed crash in the get() method of the :mod:`dbm.ndbm` database object when
it is called with a single argument.
..
.. bpo: 33329
.. date: 2018-04-23-13-21-39
.. nonce: lQ-Eod
.. section: Library
Fix multiprocessing regression on newer glibcs
..
.. bpo: 991266
.. date: 2018-04-21-00-24-08
.. nonce: h93TP_
.. section: Library
Fix quoting of the ``Comment`` attribute of
:class:`http.cookies.SimpleCookie`.
..
.. bpo: 33131
.. date: 2018-04-20-10-43-17
.. nonce: L2E977
.. section: Library
Upgrade bundled version of pip to 10.0.1.
..
.. bpo: 33308
.. date: 2018-04-18-19-12-25
.. nonce: fW75xi
.. section: Library
Fixed a crash in the :mod:`parser` module when converting an ST object to a
tree of tuples or lists with ``line_info=False`` and ``col_info=True``.
..
.. bpo: 33263
.. date: 2018-04-11-20-29-19
.. nonce: B56Hc1
.. section: Library
Fix FD leak in ``_SelectorSocketTransport``  Patch by Vlad Starostin.
..
.. bpo: 33256
.. date: 2018-04-10-20-57-14
.. nonce: ndHkqu
.. section: Library
Fix display of ``<module>`` call in the html produced by ``cgitb.html()``.
Patch by Stéphane Blondon.
..
.. bpo: 33203
.. date: 2018-04-05-11-09-45
.. nonce: Hje9Py
.. section: Library
``random.Random.choice()`` now raises ``IndexError`` for empty sequences
consistently even when called from subclasses without a ``getrandbits()``
implementation.
..
.. bpo: 33224
.. date: 2018-04-04-23-41-30
.. nonce: pyR0jB
.. section: Library
Update difflib.mdiff() for :pep:`479`.  Convert an uncaught StopIteration in a
generator into a return-statement.
..
.. bpo: 33209
.. date: 2018-04-03-10-37-13
.. nonce: 9sGWE_
.. section: Library
End framing at the end of C implementation of :func:`pickle.Pickler.dump`.
..
.. bpo: 32861
.. date: 2018-04-02-20-44-54
.. nonce: HeBjzN
.. section: Library
The urllib.robotparser's ``__str__`` representation now includes wildcard
entries and the "Crawl-delay" and "Request-rate" fields. Patch by Michael
Lazar.
..
.. bpo: 33096
.. date: 2018-03-25-13-18-16
.. nonce: ofdbe7
.. section: Library
Allow ttk.Treeview.insert to insert iid that has a false boolean value. Note
iid=0 and iid=False would be same. Patch by Garvit Khatri.
..
.. bpo: 33127
.. date: 2018-03-24-15-08-24
.. nonce: olJmHv
.. section: Library
The ssl module now compiles with LibreSSL 2.7.1.
..
.. bpo: 33021
.. date: 2018-03-12-00-27-56
.. nonce: m19B9T
.. section: Library
Release the GIL during fstat() calls, avoiding hang of all threads when
calling mmap.mmap(), os.urandom(), and random.seed().  Patch by Nir Soffer.
..
.. bpo: 27683
.. date: 2018-03-07-22-28-17
.. nonce: 572Rv4
.. section: Library
Fix a regression in :mod:`ipaddress` that result of :meth:`hosts` is empty
when the network is constructed by a tuple containing an integer mask and
only 1 bit left for addresses.
..
.. bpo: 32844
.. date: 2018-02-28-13-08-00
.. nonce: u8tnAe
.. section: Library
Fix wrong redirection of a low descriptor (0 or 1) to stderr in subprocess
if another low descriptor is closed.
..
.. bpo: 31908
.. date: 2017-10-31
.. nonce: g4xh8x
.. section: Library
Fix output of cover files for ``trace`` module command-line tool. Previously
emitted cover files only when ``--missing`` option was used. Patch by
Michael Selik.
..
.. bpo: 31457
.. date: 2017-10-18-19-05-17
.. nonce: KlE6r8
.. section: Library
If nested log adapters are used, the inner ``process()`` methods are no
longer omitted.
..
.. bpo: 16865
.. date: 2017-09-29-16-40-38
.. nonce: l-f6I_
.. section: Library
Support arrays >=2GiB in :mod:`ctypes`.  Patch by Segev Finer.
..
.. bpo: 31238
.. date: 2017-08-21-12-31-53
.. nonce: Gg0LRH
.. section: Library
pydoc: the stop() method of the private ServerThread class now waits until
DocServer.serve_until_quit() completes and then explicitly sets its
docserver attribute to None to break a reference cycle.
..
.. bpo: 33503
.. date: 2018-05-14-20-08-58
.. nonce: Wvt0qg
.. section: Documentation
Fix broken pypi link
..
.. bpo: 33421
.. date: 2018-05-14-15-23-51
.. nonce: 3GU_QO
.. section: Documentation
Add missing documentation for ``typing.AsyncContextManager``.
..
.. bpo: 33378
.. date: 2018-04-29-04-02-18
.. nonce: -anAHN
.. section: Documentation
Add Korean language switcher for https://docs.python.org/3/
..
.. bpo: 33276
.. date: 2018-04-20-14-09-36
.. nonce: rA1z_3
.. section: Documentation
Clarify that the ``__path__`` attribute on modules cannot be just any value.
..
.. bpo: 33201
.. date: 2018-04-01-21-03-41
.. nonce: aa8Lkl
.. section: Documentation
Modernize documentation for writing C extension types.
..
.. bpo: 33195
.. date: 2018-04-01-14-30-36
.. nonce: dRS-XX
.. section: Documentation
Deprecate ``Py_UNICODE`` usage in ``c-api/arg`` document. ``Py_UNICODE``
related APIs are deprecated since Python 3.3, but it is missed in the
document.
..
.. bpo: 33126
.. date: 2018-03-28-17-03-17
.. nonce: 5UGkNv
.. section: Documentation
Document PyBuffer_ToContiguous().
..
.. bpo: 27212
.. date: 2018-03-22-19-23-04
.. nonce: wrE5KR
.. section: Documentation
Modify documentation for the :func:`islice` recipe to consume initial values
up to the start index.
..
.. bpo: 28247
.. date: 2018-03-20-20-11-05
.. nonce: -V-WS-
.. section: Documentation
Update :mod:`zipapp` documentation to describe how to make standalone
applications.
..
.. bpo: 18802
.. date: 2018-03-11-18-53-47
.. nonce: JhAqH3
.. section: Documentation
Documentation changes for ipaddress.  Patch by Jon Foster and Berker Peksag.
..
.. bpo: 27428
.. date: 2018-03-11-00-16-56
.. nonce: B7A8FT
.. section: Documentation
Update documentation to clarify that ``WindowsRegistryFinder`` implements
``MetaPathFinder``. (Patch by Himanshu Lakhara)
..
.. bpo: 8243
.. date: 2018-01-13-20-30-53
.. nonce: s98r28
.. section: Documentation
Add a note about curses.addch and curses.addstr exception behavior when
writing outside a window, or pad.
..
.. bpo: 31432
.. date: 2017-09-13-07-14-59
.. nonce: yAY4Z3
.. section: Documentation
Clarify meaning of CERT_NONE, CERT_OPTIONAL, and CERT_REQUIRED flags for
ssl.SSLContext.verify_mode.
..
.. bpo: 33655
.. date: 2018-05-26-16-01-40
.. nonce: Frb4LA
.. section: Tests
Ignore test_posix_fallocate failures on BSD platforms that might be due to
running on ZFS.
..
.. bpo: 19417
.. date: 2018-01-08-13-33-47
.. nonce: 2asoXy
.. section: Tests
Add test_bdb.py.
..
.. bpo: 5755
.. date: 2018-06-04-21-34-34
.. nonce: 65GmCj
.. section: Build
Move ``-Wstrict-prototypes`` option to ``CFLAGS_NODIST`` from ``OPT``. This
option emitted annoying warnings when building extension modules written in
C++.
..
.. bpo: 33614
.. date: 2018-05-28-11-40-22
.. nonce: 28e0sE
.. section: Build
Ensures module definition files for the stable ABI on Windows are correctly
regenerated.
..
.. bpo: 33522
.. date: 2018-05-15-12-44-50
.. nonce: mJoNcA
.. section: Build
Enable CI builds on Visual Studio Team Services at
https://python.visualstudio.com/cpython
..
.. bpo: 33012
.. date: 2018-05-10-21-10-01
.. nonce: 5Zfjac
.. section: Build
Add ``-Wno-cast-function-type`` for gcc 8 for silencing warnings about
function casts like casting to PyCFunction in method definition lists.
..
.. bpo: 33394
.. date: 2018-04-30-17-36-46
.. nonce: _Vdi4t
.. section: Build
Enable the verbose build for extension modules, when GNU make is passed
macros on the command line.
..
.. bpo: 33184
.. date: 2018-04-13-11-39-28
.. nonce: aEohx0
.. section: Windows
Update Windows installer to OpenSSL 1.0.2o.
..
.. bpo: 33184
.. date: 2018-04-07-00-58-50
.. nonce: rMTiqu
.. section: macOS
Update macOS installer build to use OpenSSL 1.0.2o.
..
.. bpo: 33656
.. date: 2018-06-10-17-59-36
.. nonce: 60ZqJS
.. section: IDLE
On Windows, add API call saying that tk scales for DPI. On Windows 8.1+ or
10, with DPI compatibility properties of the Python binary unchanged, and a
monitor resolution greater than 96 DPI, this should make text and lines
sharper.  It should otherwise have no effect.
..
.. bpo: 33768
.. date: 2018-06-04-19-23-11
.. nonce: I_2qpV
.. section: IDLE
Clicking on a context line moves that line to the top of the editor window.
..
.. bpo: 33763
.. date: 2018-06-03-20-12-57
.. nonce: URiFlE
.. section: IDLE
IDLE: Use read-only text widget for code context instead of label widget.
..
.. bpo: 33664
.. date: 2018-06-03-09-13-28
.. nonce: PZzQyL
.. section: IDLE
Scroll IDLE editor text by lines. Previously, the mouse wheel and scrollbar
slider moved text by a fixed number of pixels, resulting in partial lines at
the top of the editor box.  The change also applies to the shell and grep
output windows, but not to read-only text views.
..
.. bpo: 33679
.. date: 2018-05-29-07-14-37
.. nonce: MgX_Ui
.. section: IDLE
Enable theme-specific color configuration for Code Context. Use the
Highlights tab to see the setting for built-in themes or add settings to
custom themes.
..
.. bpo: 33642
.. date: 2018-05-24-20-42-44
.. nonce: J0VQbS
.. section: IDLE
Display up to maxlines non-blank lines for Code Context. If there is no
current context, show a single blank line.
..
.. bpo: 33628
.. date: 2018-05-23-19-51-07
.. nonce: sLlFLO
.. section: IDLE
IDLE: Cleanup codecontext.py and its test.
..
.. bpo: 33564
.. date: 2018-05-17-19-41-12
.. nonce: XzHZJe
.. section: IDLE
IDLE's code context now recognizes async as a block opener.
..
.. bpo: 29706
.. date: 2018-05-15-17-01-10
.. nonce: id4H5i
.. section: IDLE
IDLE now colors async and await as keywords in 3.6. They become full
keywords in 3.7.
..
.. bpo: 21474
.. date: 2018-04-29-16-13-02
.. nonce: bglg-F
.. section: IDLE
Update word/identifier definition from ascii to unicode. In text and entry
boxes, this affects selection by double-click, movement left/right by
control-left/right, and deletion left/right by control-BACKSPACE/DEL.
..
.. bpo: 33204
.. date: 2018-04-02-00-28-13
.. nonce: NBsuIv
.. section: IDLE
IDLE: consistently color invalid string prefixes. A 'u' string prefix cannot
be paired with either 'r' or 'f'. Consistently color as much of the prefix,
starting at the right, as is valid. Revise and extend colorizer test.
..
.. bpo: 32831
.. date: 2018-02-12-08-08-45
.. nonce: srDRvU
.. section: IDLE
Add docstrings and tests for codecontext.
..
.. bpo: 33189
.. date: 2018-04-03-18-10-00
.. nonce: QrXR00
.. section: Tools/Demos
:program:`pygettext.py` now recognizes only literal strings as docstrings
and translatable strings, and rejects bytes literals and f-string
expressions.
..
.. bpo: 31920
.. date: 2018-03-26-18-54-24
.. nonce: u_WKsT
.. section: Tools/Demos
Fixed handling directories as arguments in the ``pygettext`` script. Based
on patch by Oleg Krasnikov.
..
.. bpo: 29673
.. date: 2018-03-16-17-25-05
.. nonce: m8QtaW
.. section: Tools/Demos
Fix pystackv and pystack gdbinit macros.
..
.. bpo: 32885
.. date: 2018-02-20-12-16-47
.. nonce: dL5x7C
.. section: Tools/Demos
Add an ``-n`` flag for ``Tools/scripts/pathfix.py`` to disable automatic
backup creation (files with ``~`` suffix).
..
.. bpo: 31583
.. date: 2017-09-26-10-11-21
.. nonce: TM90_H
.. section: Tools/Demos
Fix 2to3 for using with --add-suffix option but without --output-dir option
for relative path to files in current directory.
..
.. bpo: 32374
.. date: 2018-01-09-17-03-54
.. nonce: SwwLoz
.. section: C API
Document that m_traverse for multi-phase initialized modules can be called
with m_state=NULL, and add a sanity check

.. bpo: 24467
.. date: 9236
.. nonce: BAJ80-
.. release date: 2015-07-05
.. section: Core and Builtins
Fixed possible buffer over-read in bytearray. The bytearray object now
always allocates place for trailing null byte and it's buffer now is always
null-terminated.
..
.. bpo: 0
.. date: 9235
.. nonce: 944IUY
.. section: Core and Builtins
Upgrade to Unicode 8.0.0.
..
.. bpo: 24345
.. date: 9234
.. nonce: fVcTaB
.. section: Core and Builtins
Add Py_tp_finalize slot for the stable ABI.
..
.. bpo: 24400
.. date: 9233
.. nonce: 2mNeD8
.. section: Core and Builtins
Introduce a distinct type for :pep:`492` coroutines; add types.CoroutineType,
inspect.getcoroutinestate, inspect.getcoroutinelocals; coroutines no longer
use CO_GENERATOR flag; sys.set_coroutine_wrapper works only for 'async def'
coroutines; inspect.iscoroutine no longer uses collections.abc.Coroutine,
it's intended to test for pure 'async def' coroutines only; add new opcode:
GET_YIELD_FROM_ITER; fix generators wrapper used in types.coroutine to be
instance of collections.abc.Generator; collections.abc.Awaitable and
collections.abc.Coroutine can no longer be used to detect generator-based
coroutines--use inspect.isawaitable instead.
..
.. bpo: 24450
.. date: 9232
.. nonce: lF0S5c
.. section: Core and Builtins
Add gi_yieldfrom to generators and cr_await to coroutines. Contributed by
Benno Leslie and Yury Selivanov.
..
.. bpo: 19235
.. date: 9231
.. nonce: 0kW4n5
.. section: Core and Builtins
Add new RecursionError exception. Patch by Georg Brandl.
..
.. bpo: 21750
.. date: 9230
.. nonce: _Ycvgi
.. section: Library
mock_open.read_data can now be read from each instance, as it could in
Python 3.3.
..
.. bpo: 24552
.. date: 9229
.. nonce: VTO6sf
.. section: Library
Fix use after free in an error case of the _pickle module.
..
.. bpo: 24514
.. date: 9228
.. nonce: _xRb2r
.. section: Library
tarfile now tolerates number fields consisting of only whitespace.
..
.. bpo: 19176
.. date: 9227
.. nonce: 8V6nOK
.. section: Library
Fixed doctype() related bugs in C implementation of ElementTree. A
deprecation warning no longer issued by XMLParser subclass with default
doctype() method.  Direct call of doctype() now issues a warning.  Parser's
doctype() now is not called if target's doctype() is called.  Based on patch
by Martin Panter.
..
.. bpo: 20387
.. date: 9226
.. nonce: aAbWbQ
.. section: Library
Restore semantic round-trip correctness in tokenize/untokenize for
tab-indented blocks.
..
.. bpo: 24456
.. date: 9225
.. nonce: yYSd2u
.. section: Library
Fixed possible buffer over-read in adpcm2lin() and lin2adpcm() functions of
the audioop module.
..
.. bpo: 24336
.. date: 9224
.. nonce: 4a5y1m
.. section: Library
The contextmanager decorator now works with functions with keyword arguments
called "func" and "self".  Patch by Martin Panter.
..
.. bpo: 24522
.. date: 9223
.. nonce: PkcqCA
.. section: Library
Fix possible integer overflow in json accelerator module.
..
.. bpo: 24489
.. date: 9222
.. nonce: GJnMcW
.. section: Library
ensure a previously set C errno doesn't disturb cmath.polar().
..
.. bpo: 24408
.. date: 9221
.. nonce: vPb5UK
.. section: Library
Fixed AttributeError in measure() and metrics() methods of tkinter.Font.
..
.. bpo: 14373
.. date: 9220
.. nonce: CTYZ4J
.. section: Library
C implementation of functools.lru_cache() now can be used with methods.
..
.. bpo: 24347
.. date: 9219
.. nonce: CPPDb8
.. section: Library
Set KeyError if PyDict_GetItemWithError returns NULL.
..
.. bpo: 24348
.. date: 9218
.. nonce: U11rhr
.. section: Library
Drop superfluous incref/decref.
..
.. bpo: 24359
.. date: 9217
.. nonce: -IRNG9
.. section: Library
Check for changed OrderedDict size during iteration.
..
.. bpo: 24368
.. date: 9216
.. nonce: 550kDT
.. section: Library
Support keyword arguments in OrderedDict methods.
..
.. bpo: 24362
.. date: 9215
.. nonce: cHYce5
.. section: Library
Simplify the C OrderedDict fast nodes resize logic.
..
.. bpo: 24377
.. date: 9214
.. nonce: Gp1Bqr
.. section: Library
Fix a ref leak in OrderedDict.__repr__.
..
.. bpo: 24369
.. date: 9213
.. nonce: qFl7lZ
.. section: Library
Defend against key-changes during iteration.
..
.. bpo: 24373
.. date: 9212
.. nonce: 6TL2XG
.. section: Tests
_testmultiphase and xxlimited now use tp_traverse and tp_finalize to avoid
reference leaks encountered when combining tp_dealloc with PyType_FromSpec
(see issue #16690 for details)
..
.. bpo: 24458
.. date: 9211
.. nonce: 1egApX
.. section: Documentation
Update documentation to cover multi-phase initialization for extension
modules (PEP 489). Patch by Petr Viktorin.
..
.. bpo: 24351
.. date: 9210
.. nonce: XeSVl5
.. section: Documentation
Clarify what is meant by "identifier" in the context of string.Template
instances.
..
.. bpo: 24432
.. date: 9209
.. nonce: IvUSiN
.. section: Build
Update Windows builds and OS X 10.5 installer to use OpenSSL 1.0.2c.

.. bpo: 24305
.. date: 9302
.. nonce: QeF4A8
.. release date: 2015-09-07
.. section: Core and Builtins
Prevent import subsystem stack frames from being counted by the
warnings.warn(stacklevel=) parameter.
..
.. bpo: 24912
.. date: 9301
.. nonce: ubSi5J
.. section: Core and Builtins
Prevent __class__ assignment to immutable built-in objects.
..
.. bpo: 24975
.. date: 9300
.. nonce: 2gLdfN
.. section: Core and Builtins
Fix AST compilation for :pep:`448` syntax.
..
.. bpo: 24917
.. date: 9299
.. nonce: xaQocz
.. section: Library
time_strftime() buffer over-read.
..
.. bpo: 24748
.. date: 9298
.. nonce: 83NuO8
.. section: Library
To resolve a compatibility problem found with py2exe and pywin32,
imp.load_dynamic() once again ignores previously loaded modules to support
Python modules replacing themselves with extension modules. Patch by Petr
Viktorin.
..
.. bpo: 24635
.. date: 9297
.. nonce: EiJPPf
.. section: Library
Fixed a bug in typing.py where isinstance([], typing.Iterable) would return
True once, then False on subsequent calls.
..
.. bpo: 24989
.. date: 9296
.. nonce: 9BJLiy
.. section: Library
Fixed buffer overread in BytesIO.readline() if a position is set beyond
size.  Based on patch by John Leitch.
..
.. bpo: 24913
.. date: 9295
.. nonce: p2ZAJ4
.. section: Library
Fix overrun error in deque.index(). Found by John Leitch and Bryce Darling.

.. bpo: 32176
.. date: 2017-12-02-21-37-22
.. nonce: Wt25-N
.. release date: 2017-12-05
.. section: Core and Builtins
co_flags.CO_NOFREE is now always set correctly by the code object
constructor based on freevars and cellvars, rather than needing to be set
correctly by the caller. This ensures it will be cleared automatically when
additional cell references are injected into a modified code object and
function.
..
.. bpo: 31949
.. date: 2017-11-05-16-11-07
.. nonce: 2yNC_z
.. section: Core and Builtins
Fixed several issues in printing tracebacks (PyTraceBack_Print()).
Setting sys.tracebacklimit to 0 or less now suppresses printing tracebacks.
Setting sys.tracebacklimit to None now causes using the default limit.
Setting sys.tracebacklimit to an integer larger than LONG_MAX now means using
the limit LONG_MAX rather than the default limit.
Fixed integer overflows in the case of more than ``2**31`` traceback items on
Windows.
Fixed output errors handling.
..
.. bpo: 30696
.. date: 2017-10-28-22-06-03
.. nonce: lhC3HE
.. section: Core and Builtins
Fix the interactive interpreter looping endlessly when no memory.
..
.. bpo: 20047
.. date: 2017-10-28-19-11-05
.. nonce: GuNAto
.. section: Core and Builtins
Bytearray methods partition() and rpartition() now accept only bytes-like
objects as separator, as documented.  In particular they now raise TypeError
rather of returning a bogus result when an integer is passed as a separator.
..
.. bpo: 31852
.. date: 2017-10-27-19-18-44
.. nonce: P_4cVr
.. section: Core and Builtins
Fix a segmentation fault caused by a combination of the async soft keyword
and continuation lines.
..
.. bpo: 21720
.. date: 2017-10-25-15-51-37
.. nonce: BwIKLP
.. section: Core and Builtins
BytesWarning no longer emitted when the *fromlist* argument of
``__import__()`` or the ``__all__`` attribute of the module contain bytes
instances.
..
.. bpo: 31825
.. date: 2017-10-20-14-07-46
.. nonce: gJvmGW
.. section: Core and Builtins
Fixed OverflowError in the 'unicode-escape' codec and in
codecs.escape_decode() when decode an escaped non-ascii byte.
..
.. bpo: 28603
.. date: 2017-10-17-13-29-19
.. nonce: _-oia3
.. section: Core and Builtins
Print the full context/cause chain of exceptions on interpreter exit, even
if an exception in the chain is unhashable or compares equal to later ones.
Patch by Zane Bitter.
..
.. bpo: 31786
.. date: 2017-10-15-23-44-57
.. nonce: XwdEP4
.. section: Core and Builtins
Fix timeout rounding in the select module to round correctly negative
timeouts between -1.0 and 0.0. The functions now block waiting for events as
expected. Previously, the call was incorrectly non-blocking. Patch by Pablo
Galindo.
..
.. bpo: 31642
.. date: 2017-10-08-10-00-55
.. nonce: 1IKqgs
.. section: Core and Builtins
Restored blocking "from package import module" by setting
sys.modules["package.module"] to None.
..
.. bpo: 31626
.. date: 2017-10-01-15-48-03
.. nonce: reLPxY
.. section: Core and Builtins
Fixed a bug in debug memory allocator.  There was a write to freed memory
after shrinking a memory block.
..
.. bpo: 31619
.. date: 2017-09-29-20-32-24
.. nonce: 6gQ1kv
.. section: Core and Builtins
Fixed a ValueError when convert a string with large number of underscores to
integer with binary base.
..
.. bpo: 31592
.. date: 2017-09-26-16-05-04
.. nonce: IFBZj9
.. section: Core and Builtins
Fixed an assertion failure in Python parser in case of a bad
``unicodedata.normalize()``. Patch by Oren Milman.
..
.. bpo: 31588
.. date: 2017-09-26-13-03-16
.. nonce: wT9Iy7
.. section: Core and Builtins
Raise a ``TypeError`` with a helpful error message when class creation fails
due to a metaclass with a bad ``__prepare__()`` method. Patch by Oren
Milman.
..
.. bpo: 31566
.. date: 2017-09-24-09-57-04
.. nonce: OxwINs
.. section: Core and Builtins
Fix an assertion failure in ``_warnings.warn()`` in case of a bad ``__name__``
global. Patch by Oren Milman.
..
.. bpo: 31505
.. date: 2017-09-18-12-07-39
.. nonce: VomaFa
.. section: Core and Builtins
Fix an assertion failure in ``json``, in case ``_json.make_encoder()`` received
a bad ``encoder()`` argument. Patch by Oren Milman.
..
.. bpo: 31492
.. date: 2017-09-16-22-49-16
.. nonce: RtyteL
.. section: Core and Builtins
Fix assertion failures in case of failing to import from a module with a bad
``__name__`` attribute, and in case of failing to access an attribute of
such a module. Patch by Oren Milman.
..
.. bpo: 31490
.. date: 2017-09-16-13-32-35
.. nonce: r7m2sj
.. section: Core and Builtins
Fix an assertion failure in ``ctypes`` class definition, in case the class has
an attribute whose name is specified in ``_anonymous_`` but not in
``_fields_``. Patch by Oren Milman.
..
.. bpo: 31478
.. date: 2017-09-15-09-13-07
.. nonce: o06iKD
.. section: Core and Builtins
Fix an assertion failure in ``_random.Random.seed()`` in case the argument has
a bad ``__abs__()`` method. Patch by Oren Milman.
..
.. bpo: 31315
.. date: 2017-09-01-00-40-58
.. nonce: ZX20bl
.. section: Core and Builtins
Fix an assertion failure in imp.create_dynamic(), when spec.name is not a
string. Patch by Oren Milman.
..
.. bpo: 31311
.. date: 2017-08-31-17-52-56
.. nonce: bNE2l-
.. section: Core and Builtins
Fix a crash in the ``__setstate__()`` method of ``ctypes._CData``, in case of
a bad ``__dict__``. Patch by Oren Milman.
..
.. bpo: 31293
.. date: 2017-08-28-17-51-42
.. nonce: eMYZXj
.. section: Core and Builtins
Fix crashes in true division and multiplication of a timedelta object by a
float with a bad as_integer_ratio() method. Patch by Oren Milman.
..
.. bpo: 31285
.. date: 2017-08-27-21-18-30
.. nonce: 7lzaKV
.. section: Core and Builtins
Fix an assertion failure in ``warnings.warn_explicit``, when the return value
of the received loader's ``get_source()`` has a bad ``splitlines()`` method. Patch
by Oren Milman.
..
.. bpo: 30817
.. date: 2017-07-01-15-11-13
.. nonce: j7ZvN_
.. section: Core and Builtins
``PyErr_PrintEx()`` clears now the ignored exception that may be raised by
``_PySys_SetObjectId()``, for example when no memory.
..
.. bpo: 28556
.. date: 2017-12-05-02-03-07
.. nonce: 9Z_PsJ
.. section: Library
Two minor fixes for ``typing`` module: allow shallow copying instances of
generic classes, improve interaction of ``__init_subclass__`` with generics.
Original PRs by Ivan Levkivskyi.
..
.. bpo: 27240
.. date: 2017-12-02-16-06-00
.. nonce: Kji34M
.. section: Library
The header folding algorithm for the new email policies has been rewritten,
which also fixes bpo-30788, bpo-31831, and bpo-32182.  In particular,
RFC2231 folding is now done correctly.
..
.. bpo: 32186
.. date: 2017-11-30-20-38-16
.. nonce: O42bVe
.. section: Library
io.FileIO.readall() and io.FileIO.read() now release the GIL when getting
the file size. Fixed hang of all threads with inaccessible NFS server. Patch
by Nir Soffer.
..
.. bpo: 12239
.. date: 2017-11-24-14-07-55
.. nonce: Nj3A0x
.. section: Library
Make :meth:`!msilib.SummaryInformation.GetProperty` return ``None`` when the
value of property is ``VT_EMPTY``.  Initial patch by Mark Mc Mahon.
..
.. bpo: 31325
.. date: 2017-11-23-22-12-11
.. nonce: 8jAUxN
.. section: Library
Fix wrong usage of :func:`collections.namedtuple` in the
:meth:`RobotFileParser.parse() <urllib.robotparser.RobotFileParser.parse>`
method.
Initial patch by Robin Wellner.
..
.. bpo: 12382
.. date: 2017-11-23-21-47-36
.. nonce: xWT9k0
.. section: Library
:func:`!msilib.OpenDatabase` now raises a better exception message when it
couldn't open or create an MSI file.  Initial patch by William Tisäter.
..
.. bpo: 32110
.. date: 2017-11-22-09-44-15
.. nonce: VJa9bo
.. section: Library
``codecs.StreamReader.read(n)`` now returns not more than *n*
characters/bytes for non-negative *n*. This makes it compatible with
``read()`` methods of other file-like objects.
..
.. bpo: 32072
.. date: 2017-11-18-21-13-52
.. nonce: nwDV8L
.. section: Library
Fixed issues with binary plists:
Fixed saving bytearrays.
Identical objects will be saved only once.
Equal references will be load as identical objects.
Added support for saving and loading recursive data structures.
..
.. bpo: 32034
.. date: 2017-11-15-13-44-28
.. nonce: uHAOmu
.. section: Library
Make asyncio.IncompleteReadError and LimitOverrunError pickleable.
..
.. bpo: 32015
.. date: 2017-11-13-17-48-33
.. nonce: 4nqRTD
.. section: Library
Fixed the looping of asyncio in the case of reconnection the socket during
waiting async read/write from/to the socket.
..
.. bpo: 32011
.. date: 2017-11-12-20-47-59
.. nonce: NzVDdZ
.. section: Library
Restored support of loading marshal files with the TYPE_INT64 code. These
files can be produced in Python 2.7.
..
.. bpo: 31970
.. date: 2017-11-07-14-20-09
.. nonce: x4EN_9
.. section: Library
Reduce performance overhead of asyncio debug mode.
..
.. bpo: 9678
.. date: 2017-11-03-22-05-47
.. nonce: oD51q6
.. section: Library
Fixed determining the MAC address in the uuid module:
Using ifconfig on NetBSD and OpenBSD.
Using arp on Linux, FreeBSD, NetBSD and OpenBSD.
Based on patch by Takayuki Shimizukawa.
..
.. bpo: 30057
.. date: 2017-11-03-19-11-43
.. nonce: NCaijI
.. section: Library
Fix potential missed signal in signal.signal().
..
.. bpo: 31933
.. date: 2017-11-03-08-36-03
.. nonce: UrtoMP
.. section: Library
Fix Blake2 params leaf_size and node_offset on big endian platforms. Patch
by Jack O'Connor.
..
.. bpo: 31927
.. date: 2017-11-02-18-26-40
.. nonce: 40K6kp
.. section: Library
Fixed compilation of the socket module on NetBSD 8.  Fixed assertion failure
or reading arbitrary data when parse a AF_BLUETOOTH address on NetBSD and
DragonFly BSD.
..
.. bpo: 27666
.. date: 2017-11-01-18-13-42
.. nonce: j2zRnF
.. section: Library
Fixed stack corruption in curses.box() and curses.ungetmouse() when the size
of types chtype or mmask_t is less than the size of C long.  curses.box()
now accepts characters as arguments.  Based on patch by Steve Fink.
..
.. bpo: 31897
.. date: 2017-10-30-11-04-56
.. nonce: yjwdEb
.. section: Library
plistlib now catches more errors when read binary plists and raises
InvalidFileException instead of unexpected exceptions.
..
.. bpo: 25720
.. date: 2017-10-29-17-52-40
.. nonce: vSvb5h
.. section: Library
Fix the method for checking pad state of curses WINDOW. Patch by Masayuki
Yamamoto.
..
.. bpo: 31893
.. date: 2017-10-29-13-51-01
.. nonce: 8LZKEz
.. section: Library
Fixed the layout of the kqueue_event structure on OpenBSD and NetBSD. Fixed
the comparison of the kqueue_event objects.
..
.. bpo: 31891
.. date: 2017-10-29-11-23-24
.. nonce: 9kAPha
.. section: Library
Fixed building the curses module on NetBSD.
..
.. bpo: 28416
.. date: 2017-10-23-12-05-33
.. nonce: Ldnw8X
.. section: Library
Instances of pickle.Pickler subclass with the persistent_id() method and
pickle.Unpickler subclass with the persistent_load() method no longer create
reference cycles.
..
.. bpo: 28326
.. date: 2017-10-22-11-06-02
.. nonce: rxh7L4
.. section: Library
Fix multiprocessing.Process when stdout and/or stderr is closed or None.
..
.. bpo: 31457
.. date: 2017-10-18-19-05-17
.. nonce: KlE6r8
.. section: Library
If nested log adapters are used, the inner ``process()`` methods are no
longer omitted.
..
.. bpo: 31457
.. date: 2017-10-18-16-48-09
.. nonce: _ovmzp
.. section: Library
The ``manager`` property on LoggerAdapter objects is now properly settable.
..
.. bpo: 31806
.. date: 2017-10-17-23-27-03
.. nonce: TzphdL
.. section: Library
Fix timeout rounding in time.sleep(), threading.Lock.acquire() and
socket.socket.settimeout() to round correctly negative timeouts between -1.0
and 0.0. The functions now block waiting for events as expected. Previously,
the call was incorrectly non-blocking. Patch by Pablo Galindo.
..
.. bpo: 28603
.. date: 2017-10-17-12-29-18
.. nonce: tGuX2C
.. section: Library
traceback: Fix a TypeError that occurred during printing of exception
tracebacks when either the current exception or an exception in its
context/cause chain is unhashable. Patch by Zane Bitter.
..
.. bpo: 30058
.. date: 2017-10-12-19-00-53
.. nonce: cENtry
.. section: Library
Fixed buffer overflow in select.kqueue.control().
..
.. bpo: 31770
.. date: 2017-10-12-18-45-38
.. nonce: GV3MPx
.. section: Library
Prevent a crash when calling the ``__init__()`` method of a
``sqlite3.Cursor`` object more than once. Patch by Oren Milman.
..
.. bpo: 31672
.. date: 2017-10-12-02-47-16
.. nonce: DaOkVd
.. section: Library
``idpattern`` in ``string.Template`` matched some non-ASCII characters. Now
it uses ``-i`` regular expression local flag to avoid non-ASCII characters.
..
.. bpo: 31764
.. date: 2017-10-11-22-18-04
.. nonce: EMyIkK
.. section: Library
Prevent a crash in ``sqlite3.Cursor.close()`` in case the ``Cursor`` object
is uninitialized. Patch by Oren Milman.
..
.. bpo: 31752
.. date: 2017-10-11-00-45-01
.. nonce: DhWevN
.. section: Library
Fix possible crash in timedelta constructor called with custom integers.
..
.. bpo: 31701
.. date: 2017-10-09-17-42-30
.. nonce: NRrVel
.. section: Library
On Windows, faulthandler.enable() now ignores MSC and COM exceptions.
..
.. bpo: 31728
.. date: 2017-10-08-23-28-30
.. nonce: XrVMME
.. section: Library
Prevent crashes in ``_elementtree`` due to unsafe cleanup of ``Element.text``
and ``Element.tail``. Patch by Oren Milman.
..
.. bpo: 31620
.. date: 2017-10-06-04-35-31
.. nonce: gksLA1
.. section: Library
an empty asyncio.Queue now doesn't leak memory when queue.get pollers
timeout
..
.. bpo: 31632
.. date: 2017-10-04-11-37-14
.. nonce: LiOC3C
.. section: Library
Fix method set_protocol() of class _SSLProtocolTransport in asyncio module.
This method was previously modifying a wrong reference to the protocol.
..
.. bpo: 31675
.. date: 2017-10-03-15-06-24
.. nonce: Nh7jJ3
.. section: Library
Fixed memory leaks in Tkinter's methods splitlist() and split() when pass a
string larger than 2 GiB.
..
.. bpo: 31673
.. date: 2017-10-03-14-37-46
.. nonce: RFCrka
.. section: Library
Fixed typo in the name of Tkinter's method adderrorinfo().
..
.. bpo: 30806
.. date: 2017-09-29
.. nonce: lP5GrH
.. section: Library
Fix the string representation of a netrc object.
..
.. bpo: 15037
.. date: 2017-09-29-19-19-36
.. nonce: ykimLK
.. section: Library
Added a workaround for getkey() in curses for ncurses 5.7 and earlier.
..
.. bpo: 25351
.. date: 2017-09-28-23-10-51
.. nonce: 2JmFpF
.. section: Library
Avoid venv activate failures with undefined variables
..
.. bpo: 25532
.. date: 2017-09-27-08-11-38
.. nonce: ey4Yez
.. section: Library
inspect.unwrap() will now only try to unwrap an object
sys.getrecursionlimit() times, to protect against objects which create a new
object on every attribute access.
..
.. bpo: 30347
.. date: 2017-09-25-14-04-30
.. nonce: B4--_D
.. section: Library
Stop crashes when concurrently iterate over itertools.groupby() iterators.
..
.. bpo: 31516
.. date: 2017-09-20-18-43-01
.. nonce: 23Yuq3
.. section: Library
``threading.current_thread()`` should not return a dummy thread at shutdown.
..
.. bpo: 31351
.. date: 2017-09-17-15-24-25
.. nonce: yQdKv-
.. section: Library
python -m ensurepip now exits with non-zero exit code if pip bootstrapping
has failed.
..
.. bpo: 31482
.. date: 2017-09-16-01-53-11
.. nonce: 39s5dS
.. section: Library
``random.seed()`` now works with bytes in version=1
..
.. bpo: 31334
.. date: 2017-09-04-00-22-31
.. nonce: 9WYRfi
.. section: Library
Fix ``poll.poll([timeout])`` in the ``select`` module for arbitrary negative
timeouts on all OSes where it can only be a non-negative integer or -1.
Patch by Riccardo Coccioli.
..
.. bpo: 31310
.. date: 2017-08-30-18-23-54
.. nonce: 7D1UNt
.. section: Library
multiprocessing's semaphore tracker should be launched again if crashed.
..
.. bpo: 31308
.. date: 2017-08-30-17-59-36
.. nonce: KbexyC
.. section: Library
Make multiprocessing's forkserver process immune to Ctrl-C and other user
interruptions. If it crashes, restart it when necessary.
..
.. bpo: 32105
.. date: 2017-11-21-10-54-16
.. nonce: 91mhWm
.. section: Documentation
Added asyncio.BaseEventLoop.connect_accepted_socket versionadded marker.
..
.. bpo: 31537
.. date: 2017-10-08-23-02-14
.. nonce: SiFNM8
.. section: Documentation
Fix incorrect usage of ``get_history_length`` in readline documentation
example code. Patch by Brad Smith.
..
.. bpo: 30085
.. date: 2017-09-14-18-44-50
.. nonce: 0J9w-u
.. section: Documentation
The operator functions without double underscores are preferred for clarity.
The one with underscores are only kept for back-compatibility.
..
.. bpo: 31380
.. date: 2017-12-04-23-19-16
.. nonce: VlMmHW
.. section: Tests
Skip test_httpservers test_undecodable_file on macOS: fails on APFS.
..
.. bpo: 31705
.. date: 2017-11-30-12-27-10
.. nonce: yULW7O
.. section: Tests
Skip test_socket.test_sha256() on Linux kernel older than 4.5. The test
fails with ENOKEY on kernel 3.10 (on ppc64le). A fix was merged into the
kernel 4.5.
..
.. bpo: 31174
.. date: 2017-10-24-11-36-10
.. nonce: xCvXcr
.. section: Tests
Fix test_tools.test_unparse: DirectoryTestCase now stores the names sample
to always test the same files. It prevents false alarms when hunting
reference leaks.
..
.. bpo: 30695
.. date: 2017-06-30-11-20-20
.. nonce: lo7FQX
.. section: Tests
Add the ``set_nomemory(start, stop)`` and ``remove_mem_hooks()`` functions to
the ``_testcapi`` module.
..
.. bpo: 32059
.. date: 2017-11-18-11-19-28
.. nonce: a0Hxgp
.. section: Build
``detect_modules()`` in ``setup.py`` now also searches the sysroot paths
when cross-compiling.
..
.. bpo: 31957
.. date: 2017-11-06-11-53-39
.. nonce: S_1jFK
.. section: Build
Fixes Windows SDK version detection when building for Windows.
..
.. bpo: 31609
.. date: 2017-11-04-15-35-08
.. nonce: k7_nBR
.. section: Build
Fixes quotes in PCbuild/clean.bat
..
.. bpo: 31934
.. date: 2017-11-03-15-17-50
.. nonce: 8bUlpv
.. section: Build
Abort the build when building out of a not clean source tree.
..
.. bpo: 31926
.. date: 2017-11-03-10-07-14
.. nonce: 57wE98
.. section: Build
Fixed Argument Clinic sometimes causing compilation errors when there was
more than one function and/or method in a .c file with the same name.
..
.. bpo: 28791
.. date: 2017-11-02-20-30-57
.. nonce: VaE3o8
.. section: Build
Update Windows builds to use SQLite 3.21.0.
..
.. bpo: 28791
.. date: 2017-11-02-20-13-46
.. nonce: STt3jL
.. section: Build
Update OS X installer to use SQLite 3.21.0.
..
.. bpo: 22140
.. date: 2017-09-26-22-39-58
.. nonce: ZRf7Wn
.. section: Build
Prevent double substitution of prefix in python-config.sh.
..
.. bpo: 31536
.. date: 2017-09-20-21-32-21
.. nonce: KUDjno
.. section: Build
Avoid wholesale rebuild after ``make regen-all`` if nothing changed.
..
.. bpo: 1102
.. date: 2017-11-19-09-46-27
.. nonce: NY-g1F
.. section: Windows
Return ``None`` when ``View.Fetch()`` returns ``ERROR_NO_MORE_ITEMS``
instead of raising ``MSIError``.
Initial patch by Anthony Tuininga.
..
.. bpo: 31944
.. date: 2017-11-04-15-29-47
.. nonce: 0Bx8tZ
.. section: Windows
Fixes Modify button in Apps and Features dialog.
..
.. bpo: 31392
.. date: 2017-12-04-21-57-43
.. nonce: f8huBC
.. section: macOS
Update macOS installer to use OpenSSL 1.0.2m
..
.. bpo: 32207
.. date: 2017-12-04-15-04-43
.. nonce: IzyAJo
.. section: IDLE
Improve tk event exception tracebacks in IDLE. When tk event handling is
driven by IDLE's run loop, a confusing and distracting queue.EMPTY traceback
context is no longer added to tk event exception tracebacks.  The traceback
is now the same as when event handling is driven by user code.  Patch based
on a suggestion by Serhiy Storchaka.
..
.. bpo: 32164
.. date: 2017-11-28-21-47-15
.. nonce: 2T2Na8
.. section: IDLE
Delete unused file idlelib/tabbedpages.py. Use of TabbedPageSet in
configdialog was replaced by ttk.Notebook.
..
.. bpo: 32100
.. date: 2017-11-21-08-26-08
.. nonce: P43qx2
.. section: IDLE
IDLE: Fix old and new bugs in pathbrowser; improve tests. Patch mostly by
Cheryl Sabella.
..
.. bpo: 31858
.. date: 2017-10-26-20-20-19
.. nonce: VuSA_e
.. section: IDLE
IDLE -- Restrict shell prompt manipulation to the shell. Editor and output
windows only see an empty last prompt line.  This simplifies the code and
fixes a minor bug when newline is inserted. Sys.ps1, if present, is read on
Shell start-up, but is not set or changed.
..
.. bpo: 31860
.. date: 2017-10-24-16-21-50
.. nonce: gECuWx
.. section: IDLE
The font sample in the IDLE configuration dialog is now editable. Changes
persist while IDLE remains open
..
.. bpo: 31836
.. date: 2017-10-21-15-41-53
.. nonce: fheLME
.. section: IDLE
Test_code_module now passes if run after test_idle, which sets ps1.
The code module uses sys.ps1 if present or sets it to '>>> ' if not.
Test_code_module now properly tests both behaviors.  Ditto for ps2.
..
.. bpo: 28603
.. date: 2017-10-17-13-26-13
.. nonce: TMEQfp
.. section: IDLE
Fix a TypeError that caused a shell restart when printing a traceback that
includes an exception that is unhashable. Patch by Zane Bitter.
..
.. bpo: 13802
.. date: 2017-10-12-00-51-29
.. nonce: VwjZRD
.. section: IDLE
Use non-Latin characters in the IDLE's Font settings sample. Even if one
selects a font that defines a limited subset of the unicode Basic
Multilingual Plane, tcl/tk will use other fonts that define a character. The
expanded example give users of non-Latin characters a better idea of what
they might see in IDLE's shell and editors. To make room for the expanded
sample, frames on the Font tab are re-arranged. The Font/Tabs help explains
a bit about the additions.
..
.. bpo: 31460
.. date: 2017-09-30-19-03-26
.. nonce: HpveI6
.. section: IDLE
Simplify the API of IDLE's Module Browser.
Passing a widget instead of an flist with a root widget opens the option of
creating a browser frame that is only part of a window.  Passing a full file
name instead of pieces assumed to come from a .py file opens the possibility
of browsing python files that do not end in .py.
..
.. bpo: 31649
.. date: 2017-09-30-13-59-18
.. nonce: LxN4Vb
.. section: IDLE
IDLE - Make _htest, _utest parameters keyword only.
..
.. bpo: 31559
.. date: 2017-09-23-12-52-24
.. nonce: ydckYX
.. section: IDLE
Remove test order dependence in idle_test.test_browser.
..
.. bpo: 31459
.. date: 2017-09-22-20-26-23
.. nonce: L0pnH9
.. section: IDLE
Rename IDLE's module browser from Class Browser to Module Browser. The
original module-level class and method browser became a module browser, with
the addition of module-level functions, years ago. Nested classes and
functions were added yesterday.  For back-compatibility, the virtual event
<<open-class-browser>>, which appears on the Keys tab of the Settings
dialog, is not changed. Patch by Cheryl Sabella.
..
.. bpo: 31500
.. date: 2017-09-18-10-43-03
.. nonce: Y_YDxA
.. section: IDLE
Default fonts now are scaled on HiDPI displays.
..
.. bpo: 1612262
.. date: 2017-08-14-15-13-50
.. nonce: -x_Oyq
.. section: IDLE
IDLE module browser now shows nested classes and functions. Original patches
for code and tests by Guilherme Polo and Cheryl Sabella, respectively.
..
.. bpo: 30722
.. date: 2017-10-23-19-45-52
.. nonce: ioRlAu
.. section: Tools/Demos
Make redemo work with Python 3.6 and newer versions.
Also, remove the ``LOCALE`` option since it doesn't work with string
patterns in Python 3.
Patch by Christoph Sarnowski.
..
.. bpo: 20891
.. date: 2017-11-30-18-13-45
.. nonce: wBnMdF
.. section: C API
Fix PyGILState_Ensure(). When PyGILState_Ensure() is called in a non-Python
thread before PyEval_InitThreads(), only call PyEval_InitThreads() after
calling PyThreadState_New() to fix a crash.
..
.. bpo: 31532
.. date: 2017-09-20-21-59-52
.. nonce: s9Cw9_
.. section: C API
Fix memory corruption due to allocator mix in getpath.c between Py_GetPath()
and Py_SetPath()
..
.. bpo: 30697
.. date: 2017-06-30-11-58-01
.. nonce: Q3T_8n
.. section: C API
The ``PyExc_RecursionErrorInst`` singleton is removed and
``PyErr_NormalizeException()`` does not use it anymore. This singleton is
persistent and its members being never cleared may cause a segfault during
finalization of the interpreter. See also issue #22898.

.. bpo: 46009
.. date: 2021-12-08-11-06-53
.. nonce: cL8pH0
.. release date: 2021-12-08
.. section: Core and Builtins
Restore behavior from 3.9 and earlier when sending non-None to newly started
generator. In 3.9 this did not affect the state of the generator. In 3.10.0
and 3.10.1 ``gen_func().send(0)`` is equivalent to
``gen_func().throw(TypeError(...)`` which exhausts the generator. In 3.10.2
onward, the behavior has been reverted to that of 3.9.
..
.. bpo: 46004
.. date: 2021-12-07-11-24-24
.. nonce: TTEU1p
.. section: Core and Builtins
Fix the :exc:`SyntaxError` location for errors involving for loops with
invalid targets. Patch by Pablo Galindo
..
.. bpo: 45711
.. date: 2021-12-05-17-36-08
.. nonce: 3TmTSw
.. section: Core and Builtins
:c:func:`!_PyErr_ChainStackItem` no longer normalizes ``exc_info`` (including
setting the traceback on the exception instance) because ``exc_info`` is
always normalized.
..
.. bpo: 45607
.. date: 2021-12-01-15-38-04
.. nonce: JhuF8b
.. section: Core and Builtins
The ``__note__`` field was added to :exc:`BaseException`. It is ``None`` by
default but can be set to a string which is added to the exception's
traceback.
..
.. bpo: 45947
.. date: 2021-12-01-14-06-36
.. nonce: 1XPPm_
.. section: Core and Builtins
Place pointers to dict and values immediately before GC header. This reduces
number of dependent memory loads to access either dict or values from 3 to
1.
..
.. bpo: 45915
.. date: 2021-11-28-11-25-08
.. nonce: TSGcLF
.. section: Core and Builtins
``is_valid_fd`` now uses faster ``fcntl(fd, F_GETFD)`` on Linux, macOS, and
Windows.
..
.. bpo: 44530
.. date: 2021-11-26-23-26-25
.. nonce: EZ0gel
.. section: Core and Builtins
Reverts a change to the ``code.__new__`` :ref:`audit event <audit-events>`
from an earlier prerelease.
..
.. bpo: 42268
.. date: 2021-11-26-22-31-22
.. nonce: 3wl-09
.. section: Core and Builtins
Fail the configure step if the selected compiler doesn't support memory
sanitizer. Patch by Pablo Galindo
..
.. bpo: 45711
.. date: 2021-11-25-17-51-29
.. nonce: D2igmz
.. section: Core and Builtins
The three values of ``exc_info`` are now always consistent with each other.
In particular, the ``type`` and ``traceback`` fields are now derived from
the exception instance. This impacts the return values of
:func:`sys.exc_info` and :c:func:`PyErr_GetExcInfo()` if the exception
instance is modified while the exception is handled, as well as
:c:func:`PyErr_SetExcInfo()`, which now ignores the ``type`` and
``traceback`` arguments provided to it.
..
.. bpo: 45727
.. date: 2021-11-24-18-24-49
.. nonce: _xVbbo
.. section: Core and Builtins
Refine the custom syntax error that suggests that a comma may be missing to
trigger only when the expressions are detected between parentheses or
brackets. Patch by Pablo Galindo
..
.. bpo: 45885
.. date: 2021-11-23-21-01-56
.. nonce: 3IxeCX
.. section: Core and Builtins
Specialized the ``COMPARE_OP`` opcode using the PEP 659 machinery.
..
.. bpo: 45786
.. date: 2021-11-23-15-25-00
.. nonce: UdEciD
.. section: Core and Builtins
Allocate space for the interpreter frame in the frame object, to avoid an
additional allocation when the frame object outlives the frame activation.
..
.. bpo: 45614
.. date: 2021-11-23-12-06-41
.. nonce: fIekgI
.. section: Library
Fix :mod:`traceback` display for exceptions with invalid module name.
..
.. bpo: 45813
.. date: 2021-11-22-11-28-13
.. nonce: ZMaWE2
.. section: Core and Builtins
Fix crash when calling coro.cr_frame.clear() after coroutine has been freed.
..
.. bpo: 45811
.. date: 2021-11-20-02-25-06
.. nonce: B-1Gsr
.. section: Core and Builtins
Improve the tokenizer errors when encountering invisible control characters
in the parser. Patch by Pablo Galindo
..
.. bpo: 45848
.. date: 2021-11-19-22-57-42
.. nonce: HgVBJ5
.. section: Core and Builtins
Allow the parser to obtain error lines directly from encoded files. Patch by
Pablo Galindo
..
.. bpo: 45709
.. date: 2021-11-19-13-17-47
.. nonce: H_t7ut
.. section: Core and Builtins
Restore behavior from 3.10 when tracing an exception raised within a with
statement.
..
.. bpo: 44525
.. date: 2021-11-18-10-02-02
.. nonce: M4xwn_
.. section: Core and Builtins
Adds new :opcode:`COPY_FREE_VARS` opcode, to make copying of free variables
from function to frame explicit. Helps optimization of calls to Python
function.
..
.. bpo: 45829
.. date: 2021-11-17-10-14-35
.. nonce: 5Cf6fY
.. section: Core and Builtins
Specialize :opcode:`BINARY_SUBSCR` for classes with a ``__getitem__`` method
implemented in Python
..
.. bpo: 45826
.. date: 2021-11-17-08-05-27
.. nonce: OERoTm
.. section: Core and Builtins
Fixed a crash when calling ``.with_traceback(None)`` on ``NameError``. This
occurs internally in ``unittest.TestCase.assertRaises()``.
..
.. bpo: 45822
.. date: 2021-11-16-19-41-04
.. nonce: OT6ueS
.. section: Core and Builtins
Fixed a bug in the parser that was causing it to not respect :pep:`263`
coding cookies when no flags are provided. Patch by Pablo Galindo
..
.. bpo: 45820
.. date: 2021-11-16-19-00-27
.. nonce: 2X6Psr
.. section: Core and Builtins
Fix a segfault when the parser fails without reading any input. Patch by
Pablo Galindo
..
.. bpo: 45636
.. date: 2021-11-15-13-32-54
.. nonce: RDlTdL
.. section: Core and Builtins
Simplify the implementation of :opcode:`BINARY_OP` by indexing into an array
of function pointers (rather than switching on the oparg).
..
.. bpo: 42540
.. date: 2021-11-15-12-08-27
.. nonce: V2w107
.. section: Core and Builtins
Fix crash when :func:`os.fork` is called with an active non-default memory
allocator.
..
.. bpo: 45738
.. date: 2021-11-14-00-14-45
.. nonce: e0cgKd
.. section: Core and Builtins
Fix computation of error location for invalid continuation characters in the
parser. Patch by Pablo Galindo.
..
.. bpo: 45636
.. date: 2021-11-11-19-11-57
.. nonce: 2fyIVm
.. section: Core and Builtins
Remove an existing "fast path" for old-style string formatting, since it no
longer appears to have any measurable impact.
..
.. bpo: 45753
.. date: 2021-11-11-17-14-21
.. nonce: nEBFcC
.. section: Core and Builtins
Make recursion checks a bit more efficient by tracking amount of calls left
before overflow.
..
.. bpo: 45773
.. date: 2021-11-09-13-01-35
.. nonce: POU8A4
.. section: Core and Builtins
Fix a compiler hang when attempting to optimize certain jump patterns.
..
.. bpo: 45764
.. date: 2021-11-09-12-19-22
.. nonce: 8RLhWL
.. section: Core and Builtins
The parser now gives a better error message when leaving out the opening
parenthesis ``(`` after a ``def``-statement::
>>> def f:
File "<stdin>", line 1
def f:
^
SyntaxError: expected '('
..
.. bpo: 45609
.. date: 2021-10-27-21-00-49
.. nonce: L1GKPX
.. section: Core and Builtins
Specialized the ``STORE_SUBSCR`` opcode using the PEP 659 machinery.
..
.. bpo: 45636
.. date: 2021-10-27-15-14-31
.. nonce: K2X7QS
.. section: Core and Builtins
Replace all numeric ``BINARY_*`` and ``INPLACE_*`` instructions with a
single :opcode:`BINARY_OP` implementation.
..
.. bpo: 45582
.. date: 2021-10-23-00-39-31
.. nonce: YONPuo
.. section: Core and Builtins
Path calculation (known as ``getpath``) has been reimplemented as a frozen
Python module. This should have no visible impact, but may affect
calculation of all paths referenced in :mod:`sys` and :mod:`sysconfig`.
..
.. bpo: 45450
.. date: 2021-10-12-18-22-44
.. nonce: d9a-bX
.. section: Core and Builtins
Improve the syntax error message for parenthesized arguments. Patch by Pablo
Galindo.
..
.. bpo: 27946
.. date: 2021-12-04-20-08-42
.. nonce: -Vuarf
.. section: Library
Fix possible crash when getting an attribute of
:class:`xml.etree.ElementTree.Element` simultaneously with replacing the
``attrib`` dict.
..
.. bpo: 45711
.. date: 2021-12-02-17-22-06
.. nonce: D6jsdv
.. section: Library
Make :mod:`asyncio` normalize exceptions as soon as they are captured with
:c:func:`PyErr_Fetch`, and before they are stored as an exc_info triplet.
This brings :mod:`asyncio` in line with the rest of the codebase, where an
exc_info triplet is always normalized.
..
.. bpo: 23819
.. date: 2021-12-02-14-37-30
.. nonce: An6vkT
.. section: Library
Replaced asserts with exceptions in asyncio, patch by Kumar Aditya.
..
.. bpo: 13236
.. date: 2021-11-30-13-52-02
.. nonce: FmJIkO
.. section: Library
:class:`unittest.TextTestResult` and :class:`unittest.TextTestRunner` flush
now the output stream more often.
..
.. bpo: 45917
.. date: 2021-11-28-17-24-11
.. nonce: J5TIrd
.. section: Library
Added :func:`math.exp2`:, which returns 2 raised to the power of x.
..
.. bpo: 37658
.. date: 2021-11-28-15-30-34
.. nonce: 8Hno7d
.. section: Library
Fix issue when on certain conditions ``asyncio.wait_for()`` may allow a
coroutine to complete successfully, but fail to return the result,
potentially causing memory leaks or other issues.
..
.. bpo: 45876
.. date: 2021-11-23-15-36-56
.. nonce: NO8Yaj
.. section: Library
Improve the accuracy of stdev() and pstdev() in the statistics module.  When
the inputs are floats or fractions, the output is a correctly rounded float
..
.. bpo: 44649
.. date: 2021-11-21-20-50-42
.. nonce: E8M936
.. section: Library
Handle dataclass(slots=True) with a field that has default a default value,
but for which init=False.
..
.. bpo: 45803
.. date: 2021-11-20-17-04-25
.. nonce: wSgFOy
.. section: Library
Added missing kw_only parameter to dataclasses.make_dataclass().
..
.. bpo: 45837
.. date: 2021-11-18-13-13-19
.. nonce: aGyr1I
.. section: Library
The :meth:`!turtle.RawTurtle.settiltangle` is deprecated since Python 3.1, it
now emits a deprecation warning and will be removed in Python 3.13.
Use :meth:`turtle.RawTurtle.tiltangle` instead.
:meth:`turtle.RawTurtle.tiltangle` was earlier incorrectly marked as
deprecated, its docstring has been corrected.
Patch by Hugo van Kemenade.
..
.. bpo: 45831
.. date: 2021-11-17-19-25-37
.. nonce: 9-TojK
.. section: Library
:mod:`faulthandler` can now write ASCII-only strings (like filenames and
function names) with a single write() syscall when dumping a traceback. It
reduces the risk of getting an unreadable dump when two threads or two
processes dump a traceback to the same file (like stderr) at the same time.
Patch by Victor Stinner.
..
.. bpo: 45828
.. date: 2021-11-17-11-40-21
.. nonce: kQU35U
.. section: Library
:mod:`sqlite` C callbacks now use unraisable exceptions if callback
tracebacks are enabled. Patch by Erlend E. Aasland.
..
.. bpo: 41735
.. date: 2021-11-16-18-13-49
.. nonce: D72UY1
.. section: Library
Fix thread lock in ``zlib.Decompress.flush()`` method before
``PyObject_GetBuffer``.
..
.. bpo: 45235
.. date: 2021-11-11-13-03-17
.. nonce: 8ZbkHa
.. section: Library
Reverted an argparse bugfix that caused regression in the handling of
default arguments for subparsers.  This prevented leaf level arguments from
taking precedence over root level arguments.
..
.. bpo: 45754
.. date: 2021-11-09-15-48-38
.. nonce: c-JDto
.. section: Library
Fix a regression in Python 3.11a1 and 3.11a2 where :mod:`sqlite3`
incorrectly would use ``SQLITE_LIMIT_LENGTH`` when checking SQL statement
lengths. Now, ``SQLITE_LIMIT_SQL_LENGTH`` is used. Patch by Erlend E.
Aasland.
..
.. bpo: 45766
.. date: 2021-11-09-09-18-06
.. nonce: dvbcMf
.. section: Library
Added *proportional* option to :meth:`statistics.linear_regression`.
..
.. bpo: 45765
.. date: 2021-11-09-09-04-19
.. nonce: JVobxK
.. section: Library
In importlib.metadata, fix distribution discovery for an empty path.
..
.. bpo: 45757
.. date: 2021-11-08-23-22-14
.. nonce: MHZHt3
.. section: Library
Fix bug where :mod:`dis` produced an incorrect oparg when
:opcode:`EXTENDED_ARG` is followed by an opcode that does not use its
argument.
..
.. bpo: 45644
.. date: 2021-11-06-17-47-46
.. nonce: ZMqHD_
.. section: Library
In-place JSON file formatting using ``python3 -m json.tool infile infile``
now works correctly, previously it left the file empty.  Patch by Chris
Wesseling.
..
.. bpo: 45703
.. date: 2021-11-03-13-41-49
.. nonce: 35AagL
.. section: Library
When a namespace package is imported before another module from the same
namespace is created/installed in a different :data:`sys.path` location
while the program is running, calling the
:func:`importlib.invalidate_caches` function will now also guarantee the new
module is noticed.
..
.. bpo: 45535
.. date: 2021-10-29-16-28-06
.. nonce: n8NiOE
.. section: Library
Improve output of ``dir()`` with Enums.
..
.. bpo: 45664
.. date: 2021-10-28-23-40-54
.. nonce: 7dqtxQ
.. section: Library
Fix :func:`types.resolve_bases` and :func:`types.new_class` for
:class:`types.GenericAlias` instance as a base.
..
.. bpo: 45663
.. date: 2021-10-28-23-11-59
.. nonce: J90N5R
.. section: Library
Fix :func:`dataclasses.is_dataclass` for dataclasses which are subclasses of
:class:`types.GenericAlias`.
..
.. bpo: 45662
.. date: 2021-10-28-22-58-14
.. nonce: sJd7Ir
.. section: Library
Fix the repr of :data:`dataclasses.InitVar` with a type alias to the
built-in class, e.g. ``InitVar[list[int]]``.
..
.. bpo: 43137
.. date: 2021-10-25-12-51-02
.. nonce: apo7jY
.. section: Library
Launch GNOME web browsers via gio tool instead of obsolete gvfs-open
..
.. bpo: 45429
.. date: 2021-10-25-01-22-49
.. nonce: VaEyN9
.. section: Library
On Windows, :func:`time.sleep` now uses a waitable timer which supports
high-resolution timers. Patch by Donghee Na and Eryk Sun.
..
.. bpo: 37295
.. date: 2021-10-18-16-08-55
.. nonce: wBEWH2
.. section: Library
Optimize :func:`math.comb` and :func:`math.perm`.
..
.. bpo: 45514
.. date: 2021-10-18-14-25-35
.. nonce: YmlzIl
.. section: Library
Deprecated legacy functions in :mod:`importlib.resources`.
..
.. bpo: 45507
.. date: 2021-10-18-14-00-01
.. nonce: lDotNV
.. section: Library
Add tests for truncated/missing trailers in gzip.decompress implementation.
..
.. bpo: 45359
.. date: 2021-10-03-22-27-35
.. nonce: LX_uxe
.. section: Library
Implement :pep:`585` for :class:`graphlib.TopologicalSorter`.
..
.. bpo: 44733
.. date: 2021-07-26-13-33-37
.. nonce: 88LrP1
.. section: Library
Add ``max_tasks_per_child`` to
:class:`concurrent.futures.ProcessPoolExecutor`. This allows users to
specify the maximum number of tasks a single process should execute before
the process needs to be restarted.
..
.. bpo: 28806
.. date: 2021-05-24-13-48-34
.. nonce: PkNw5D
.. section: Library
Improve netrc library. netrc file no longer needs to contain all tokens. And
if the login name is anonymous, security check is no longer need.
..
.. bpo: 43498
.. date: 2021-04-20-14-14-16
.. nonce: L_Hq-8
.. section: Library
Avoid a possible *"RuntimeError: dictionary changed size during iteration"*
when adjusting the process count of :class:`ProcessPoolExecutor`.
..
.. bpo: 42158
.. date: 2020-11-10-17-46-12
.. nonce: OhxAiH
.. section: Library
Add MIME types for N-quads, N-triples, Notation3 and TriG to ``mimetypes``.
..
.. bpo: 30533
.. date: 2020-06-16-18-00-56
.. nonce: StL57t
.. section: Library
Add :func:`inspect.getmembers_static` , it return all members without
triggering dynamic lookup via the descriptor protocol. Patch by Weipeng
Hong.
..
.. bpo: 42238
.. date: 2021-11-20-02-46-39
.. nonce: hlfMIc
.. section: Documentation
``make -C Doc suspicious`` will be removed soon in favor of ``make -C Doc
check``, mark it as deprecated.
..
.. bpo: 45840
.. date: 2021-11-19-02-02-32
.. nonce: A51B2S
.. section: Documentation
Improve cross-references in the documentation for the data model.
..
.. bpo: 45640
.. date: 2021-11-18-16-44-12
.. nonce: lSpc2A
.. section: Documentation
Properly marked-up grammar tokens in the documentation are now clickable and
take you to the definition of a given piece of grammar.  Patch by Arthur
Milchior.
..
.. bpo: 45788
.. date: 2021-11-18-00-07-40
.. nonce: qibUoB
.. section: Documentation
Link doc for sys.prefix to sysconfig doc on installation paths.
..
.. bpo: 45772
.. date: 2021-11-09-13-10-55
.. nonce: EdrM3t
.. section: Documentation
``socket.socket`` documentation is corrected to a class from a function.
..
.. bpo: 45392
.. date: 2021-11-06-10-54-17
.. nonce: JZnVOz
.. section: Documentation
Update the docstring of the :class:`type` built-in to remove a redundant
line and to mention keyword arguments for the constructor.
..
.. bpo: 45250
.. date: 2021-10-22-12-09-18
.. nonce: Iit5-Y
.. section: Documentation
Update the documentation to note that CPython does not consistently require
iterators to define ``__iter__``.
..
.. bpo: 25381
.. date: 2021-06-21-17-51-51
.. nonce: 7Kn-_H
.. section: Documentation
In the extending chapter of the extending doc, update a paragraph about the
global variables containing exception information.
..
.. bpo: 43905
.. date: 2021-05-24-05-00-12
.. nonce: tBIndE
.. section: Documentation
Expanded :func:`~dataclasses.astuple` and :func:`~dataclasses.asdict` docs,
warning about deepcopy being applied and providing a workaround.
..
.. bpo: 45695
.. date: 2021-12-03-14-19-16
.. nonce: QKBn2E
.. section: Tests
Out-of-tree builds with a read-only source directory are now tested by CI.
..
.. bpo: 19460
.. date: 2021-11-28-15-25-02
.. nonce: lr0aWs
.. section: Tests
Add new Test for ``Lib/email/mime/nonmultipart.py::MIMENonMultipart``.
..
.. bpo: 45835
.. date: 2021-11-17-14-28-08
.. nonce: Mgyhjx
.. section: Tests
Fix race condition in test_queue tests with multiple "feeder" threads.
..
.. bpo: 45783
.. date: 2021-11-11-13-56-00
.. nonce: 8k1Rng
.. section: Tests
The test for the freeze tool now handles file moves and deletions.
..
.. bpo: 45745
.. date: 2021-11-10-12-01-28
.. nonce: wX5B3K
.. section: Tests
Remove the ``--findleaks`` command line option of regrtest: use the
``--fail-env-changed`` option instead. Since Python 3.7, it was a deprecated
alias to the ``--fail-env-changed`` option.
..
.. bpo: 45701
.. date: 2021-10-31-10-58-45
.. nonce: r0LAUL
.. section: Tests
Add tests with ``tuple`` type with :func:`functools.lru_cache` to
``test_functools``.
..
.. bpo: 44035
.. date: 2021-12-06-09-31-27
.. nonce: BiO4XC
.. section: Build
CI now verifies that autoconf files have been regenerated with a current and
unpatched autoconf package.
..
.. bpo: 45950
.. date: 2021-12-01-17-28-39
.. nonce: eEVLoz
.. section: Build
The build system now uses a :program:`_bootstrap_python` interpreter for
freezing and deepfreezing again. To speed up build process the build tools
:program:`_bootstrap_python` and :program:`_freeze_module` are no longer
build with LTO.
..
.. bpo: 45881
.. date: 2021-11-29-16-32-55
.. nonce: 7597J6
.. section: Build
The :program:`configure` script now accepts ``--with-build-python`` and
``--with-freeze-module`` options to make cross compiling easier.
..
.. bpo: 40280
.. date: 2021-11-29-14-37-29
.. nonce: UlTMR8
.. section: Build
Emscripten platform now uses ``.wasm`` suffix by default.
..
.. bpo: 40280
.. date: 2021-11-29-11-24-45
.. nonce: Knx7d7
.. section: Build
Disable unusable core extension modules on WASM/Emscripten targets.
..
.. bpo: 40280
.. date: 2021-11-26-14-09-04
.. nonce: ZLpwQf
.. section: Build
``configure`` now checks for socket ``shutdown`` function. The check makes
it possible to disable ``SYS_shutdown`` with ``ac_cv_func_shutdown=no`` in
CONFIG_SITE.
..
.. bpo: 40280
.. date: 2021-11-26-09-10-19
.. nonce: xmiMJl
.. section: Build
``configure`` now checks for functions ``fork1, getegid, geteuid, getgid,
getppid, getuid, opendir, pipe, system, wait, ttyname``.
..
.. bpo: 33393
.. date: 2021-11-25-20-26-06
.. nonce: 24YNtM
.. section: Build
Update ``config.guess`` to 2021-06-03 and ``config.sub`` to 2021-08-14.
``Makefile`` now has an ``update-config`` target to make updating more
convenient.
..
.. bpo: 45866
.. date: 2021-11-25-13-53-36
.. nonce: ZH1W8N
.. section: Build
``make regen-all`` now produces the same output when run from a directory
other than the source tree: when building Python out of the source tree.
pegen now strips directory of the "generated by pygen from <FILENAME>"
header Patch by Victor Stinner.
..
.. bpo: 40280
.. date: 2021-11-25-10-55-03
.. nonce: E9-gsQ
.. section: Build
``configure`` now accepts machine ``wasm32`` or ``wasm64`` and OS ``wasi``
or ``emscripten`` for cross building, e.g. ``wasm32-unknown-emscripten``,
``wasm32-wasi``, or ``wasm32-unknown-wasi``.
..
.. bpo: 41498
.. date: 2021-11-25-09-15-04
.. nonce: qAk5eo
.. section: Build
Python now compiles on platforms without ``sigset_t``. Several functions in
:mod:`signal` are not available when ``sigset_t`` is missing.
Based on patch by Roman Yurchak for pyodide.
..
.. bpo: 45881
.. date: 2021-11-24-17-14-06
.. nonce: GTXXLk
.. section: Build
``setup.py`` now uses ``CC`` from environment first to discover multiarch
and cross compile paths.
..
.. bpo: 45886
.. date: 2021-11-23-23-37-49
.. nonce: _Ulnh-
.. section: Build
The ``_freeze_module`` program path can now be overridden on the command
line, e.g. ``make FREEZE_MODULE=../x86_64/Program/_freeze_module``.
..
.. bpo: 45873
.. date: 2021-11-23-04-28-40
.. nonce: 9dldZ4
.. section: Build
Get rid of the ``_bootstrap_python`` build step. The deepfreeze.py script is
now run using ``$(PYTHON_FOR_REGEN)`` which can be Python 3.7 or newer (on
Windows, 3.8 or newer).
..
.. bpo: 45847
.. date: 2021-11-19-17-57-57
.. nonce: 9phcpd
.. section: Build
Port builtin hashlib extensions to ``PY_STDLIB_MOD`` macro and ``addext()``.
..
.. bpo: 45723
.. date: 2021-11-19-15-42-27
.. nonce: vwIJWI
.. section: Build
Add ``autoconf`` helpers for saving and restoring environment variables:
* ``SAVE_ENV``: Save ``$CFLAGS``, ``$LDFLAGS``, ``$LIBS``, and
``$CPPFLAGS``.
* ``RESTORE_ENV``: Restore ``$CFLAGS``, ``$LDFLAGS``, ``$LIBS``, and
``$CPPFLAGS``.
* ``WITH_SAVE_ENV([SCRIPT])``: Run ``SCRIPT`` wrapped with ``SAVE_ENV`` and
``RESTORE_ENV``.
Patch by Erlend E. Aasland.
..
.. bpo: 45573
.. date: 2021-11-18-13-31-02
.. nonce: LCjGB8
.. section: Build
Mandatory core modules, that are required to bootstrap Python, are now in
``Modules/Setup.bootstrap``.
..
.. bpo: 45573
.. date: 2021-11-18-12-18-43
.. nonce: xsMZzn
.. section: Build
``configure`` now creates ``Modules/Setup.stdlib`` with conditionally
enabled/disabled extension module lines. The file is not used, yet.
..
.. bpo: 45573
.. date: 2021-11-17-19-02-51
.. nonce: GMNdun
.. section: Build
``configure`` now uses a unified format to set state, compiler flags, and
linker flags in Makefile. The new macro ``PY_STDLIB_MOD`` sets three
variables that are consumed by ``Modules/Setup`` and ``setup.py``.
..
.. bpo: 45816
.. date: 2021-11-16-14-44-06
.. nonce: nbdmVK
.. section: Build
Python now supports building with Visual Studio 2022 (MSVC v143, VS Version
17.0). Patch by Jeremiah Vivian.
..
.. bpo: 45800
.. date: 2021-11-13-16-40-05
.. nonce: 5Hz6nr
.. section: Build
Settings for :mod:`pyexpat` C extension are now detected by ``configure``.
The bundled ``expat`` library is built in ``Makefile``.
..
.. bpo: 45798
.. date: 2021-11-13-10-18-22
.. nonce: IraaTs
.. section: Build
Settings for :mod:`decimal` internal C extension are now detected by
``configure``. The bundled ``libmpdec`` library is built in ``Makefile``.
..
.. bpo: 45723
.. date: 2021-11-10-16-13-02
.. nonce: B5gCB1
.. section: Build
:program:`configure` has a new option ``--with-pkg-config`` to disable or
require pkg-config.
..
.. bpo: 45774
.. date: 2021-11-09-23-30-12
.. nonce: Mwm3ZR
.. section: Build
The build dependencies for :mod:`sqlite3` are now detected by ``configure``
and ``pkg-config``. Patch by Erlend E. Aasland.
..
.. bpo: 45763
.. date: 2021-11-09-10-15-33
.. nonce: gP-vrX
.. section: Build
The build dependencies for :mod:`zlib`, :mod:`bz2`, and :mod:`lzma` are now
detected by ``configure``.
..
.. bpo: 45747
.. date: 2021-11-08-11-31-48
.. nonce: AODmk_
.. section: Build
gdbm and dbm build dependencies are now detected by ``configure``.
..
.. bpo: 45743
.. date: 2021-11-08-08-58-06
.. nonce: fZ8CTi
.. section: Build
On macOS, the build system no longer passes ``search_paths_first`` to the
linker. The flag has been the default since Xcode 4 / macOS 10.6.
..
.. bpo: 45723
.. date: 2021-11-07-10-45-40
.. nonce: AreusF
.. section: Build
``configure.ac`` is now compatible with autoconf 2.71. Deprecated checks
``STDC_HEADERS`` and ``AC_HEADER_TIME`` have been removed.
..
.. bpo: 45723
.. date: 2021-11-07-10-36-12
.. nonce: JNwKSG
.. section: Build
``configure`` now prints a warning when pkg-config is missing.
..
.. bpo: 45731
.. date: 2021-11-05-20-56-29
.. nonce: 9SDnDf
.. section: Build
``configure --enable-loadable-sqlite-extensions`` is now handled by new
``PY_SQLITE_ENABLE_LOAD_EXTENSION`` macro instead of logic in setup.py.
..
.. bpo: 45723
.. date: 2021-11-05-15-09-49
.. nonce: gfSxur
.. section: Build
configure.ac now uses custom helper macros and ``AC_CACHE_CHECK`` to
simplify and speed up configure runs.
..
.. bpo: 45696
.. date: 2021-11-03-00-19-50
.. nonce: eKs46f
.. section: Build
Skip the marshal step for frozen modules by generating C code that produces
a set of ready-to-use code objects. This speeds up startup time by another
10% or more.
..
.. bpo: 45561
.. date: 2021-10-21-14-38-30
.. nonce: PVqhZE
.. section: Build
Run smelly.py tool from $(srcdir).
..
.. bpo: 46105
.. date: 2021-12-08-16-36-20
.. nonce: t1mJ6Q
.. section: Windows
Fixed calculation of :data:`sys.path` in a venv on Windows.
..
.. bpo: 45901
.. date: 2021-11-26-18-17-41
.. nonce: c5IBqM
.. section: Windows
When installed through the Microsoft Store and set as the default app for
:file:`*.py` files, command line arguments will now be passed to Python when
invoking a script without explicitly launching Python (that is, ``script.py
args`` rather than ``python script.py args``).
..
.. bpo: 45616
.. date: 2021-11-23-11-44-42
.. nonce: K52PLZ
.. section: Windows
Fix Python Launcher's ability to distinguish between versions 3.1 and 3.10
when either one is explicitly requested.  Previously, 3.1 would be used if
3.10 was requested but not installed, and 3.10 would be used if 3.1 was
requested but 3.10 was installed.
..
.. bpo: 45850
.. date: 2021-11-20-00-06-59
.. nonce: q9lofz
.. section: Windows
Implement changes to build with deep-frozen modules on Windows. Note that we
now require Python 3.10 as the "bootstrap" or "host" Python.
..
.. bpo: 45732
.. date: 2021-11-08-21-53-11
.. nonce: idl5kx
.. section: Windows
Updates bundled Tcl/Tk to 8.6.12.
..
.. bpo: 45720
.. date: 2021-11-05-01-05-46
.. nonce: 47Nc5I
.. section: Windows
Internal reference to :file:`shlwapi.dll` was dropped to help improve
startup time. This DLL will no longer be loaded at the start of every Python
process.
..
.. bpo: 45732
.. date: 2021-12-05-23-52-03
.. nonce: -BWrnh
.. section: macOS
Update python.org macOS installer to use Tcl/Tk 8.6.12.
..
.. bpo: 39026
.. date: 2021-11-09-15-42-11
.. nonce: sUnYWn
.. section: C API
Fix Python.h to build C extensions with Xcode: remove a relative include
from ``Include/cpython/pystate.h``.

.. bpo: 23285
.. date: 8948
.. nonce: bJJA8B
.. release date: 2015-02-08
.. section: Core and Builtins
PEP 475 - EINTR handling.
..
.. bpo: 22735
.. date: 8947
.. nonce: mFEX9n
.. section: Core and Builtins
Fix many edge cases (including crashes) involving custom mro()
implementations.
..
.. bpo: 22896
.. date: 8946
.. nonce: xSDAHK
.. section: Core and Builtins
Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer() and
PyObject_AsWriteBuffer().
..
.. bpo: 21295
.. date: 8945
.. nonce: LYq9nF
.. section: Core and Builtins
Revert some changes (issue #16795) to AST line numbers and column offsets
that constituted a regression.
..
.. bpo: 22986
.. date: 8944
.. nonce: yay2Lv
.. section: Core and Builtins
Allow changing an object's __class__ between a dynamic type and static type
in some cases.
..
.. bpo: 15859
.. date: 8943
.. nonce: Fs5mE2
.. section: Core and Builtins
PyUnicode_EncodeFSDefault(), PyUnicode_EncodeMBCS() and
PyUnicode_EncodeCodePage() now raise an exception if the object is not a
Unicode object. For PyUnicode_EncodeFSDefault(), it was already the case on
platforms other than Windows. Patch written by Campbell Barton.
..
.. bpo: 21408
.. date: 8942
.. nonce: Lz6P3P
.. section: Core and Builtins
The default __ne__() now returns NotImplemented if __eq__() returned
NotImplemented.  Original patch by Martin Panter.
..
.. bpo: 23321
.. date: 8941
.. nonce: HQelge
.. section: Core and Builtins
Fixed a crash in str.decode() when error handler returned replacement string
longer than malformed input data.
..
.. bpo: 22286
.. date: 8940
.. nonce: l6Qyy1
.. section: Core and Builtins
The "backslashreplace" error handlers now works with decoding and
translating.
..
.. bpo: 23253
.. date: 8939
.. nonce: p4B1H-
.. section: Core and Builtins
Delay-load ShellExecute[AW] in os.startfile for reduced startup overhead on
Windows.
..
.. bpo: 22038
.. date: 8938
.. nonce: BMZUHx
.. section: Core and Builtins
pyatomic.h now uses stdatomic.h or GCC built-in functions for atomic memory
access if available. Patch written by Vitor de Lima and Gustavo Temple.
..
.. bpo: 20284
.. date: 8937
.. nonce: CH8wpD
.. section: Core and Builtins
%-interpolation (aka printf) formatting added for bytes and bytearray.
..
.. bpo: 23048
.. date: 8936
.. nonce: X5BUd3
.. section: Core and Builtins
Fix jumping out of an infinite while loop in the pdb.
..
.. bpo: 20335
.. date: 8935
.. nonce: YcAPOs
.. section: Core and Builtins
bytes constructor now raises TypeError when encoding or errors is specified
with non-string argument.  Based on patch by Renaud Blanch.
..
.. bpo: 22834
.. date: 8934
.. nonce: N1kAXN
.. section: Core and Builtins
If the current working directory ends up being set to a non-existent
directory then import will no longer raise FileNotFoundError.
..
.. bpo: 22869
.. date: 8933
.. nonce: rAWg-V
.. section: Core and Builtins
Move the interpreter startup & shutdown code to a new dedicated
pylifecycle.c module
..
.. bpo: 22847
.. date: 8932
.. nonce: 6baj9f
.. section: Core and Builtins
Improve method cache efficiency.
..
.. bpo: 22335
.. date: 8931
.. nonce: DWsXiy
.. section: Core and Builtins
Fix crash when trying to enlarge a bytearray to 0x7fffffff bytes on a 32-bit
platform.
..
.. bpo: 22653
.. date: 8930
.. nonce: pCNlpv
.. section: Core and Builtins
Fix an assertion failure in debug mode when doing a reentrant dict insertion
in debug mode.
..
.. bpo: 22643
.. date: 8929
.. nonce: xv8xev
.. section: Core and Builtins
Fix integer overflow in Unicode case operations (upper, lower, title,
swapcase, casefold).
..
.. bpo: 17636
.. date: 8928
.. nonce: wiqnhw
.. section: Core and Builtins
Circular imports involving relative imports are now supported.
..
.. bpo: 22604
.. date: 8927
.. nonce: yii-It
.. section: Core and Builtins
Fix assertion error in debug mode when dividing a complex number by
(nan+0j).
..
.. bpo: 21052
.. date: 8926
.. nonce: -sf3tp
.. section: Core and Builtins
Do not raise ImportWarning when sys.path_hooks or sys.meta_path are set to
None.
..
.. bpo: 16518
.. date: 8925
.. nonce: UADwcN
.. section: Core and Builtins
Use 'bytes-like object required' in error messages that previously used the
far more cryptic "'x' does not support the buffer protocol.
..
.. bpo: 22470
.. date: 8924
.. nonce: igrgN2
.. section: Core and Builtins
Fixed integer overflow issues in "backslashreplace", "xmlcharrefreplace",
and "surrogatepass" error handlers.
..
.. bpo: 22540
.. date: 8923
.. nonce: FM72m-
.. section: Core and Builtins
speed up ``PyObject_IsInstance`` and ``PyObject_IsSubclass`` in the common case
that the second argument has metaclass ``type``.
..
.. bpo: 18711
.. date: 8922
.. nonce: ds5wQa
.. section: Core and Builtins
Add a new ``PyErr_FormatV`` function, similar to ``PyErr_Format`` but accepting
a ``va_list`` argument.
..
.. bpo: 22520
.. date: 8921
.. nonce: ZPJXSq
.. section: Core and Builtins
Fix overflow checking when generating the repr of a unicode object.
..
.. bpo: 22519
.. date: 8920
.. nonce: xvJVg0
.. section: Core and Builtins
Fix overflow checking in PyBytes_Repr.
..
.. bpo: 22518
.. date: 8919
.. nonce: C9T6ed
.. section: Core and Builtins
Fix integer overflow issues in latin-1 encoding.
..
.. bpo: 16324
.. date: 8918
.. nonce: YfrBNz
.. section: Core and Builtins
_charset parameter of MIMEText now also accepts email.charset.Charset
instances. Initial patch by Claude Paroz.
..
.. bpo: 1764286
.. date: 8917
.. nonce: L4seL2
.. section: Core and Builtins
Fix inspect.getsource() to support decorated functions. Patch by Claudiu
Popa.
..
.. bpo: 18554
.. date: 8916
.. nonce: hxnaui
.. section: Core and Builtins
os.__all__ includes posix functions.
..
.. bpo: 21391
.. date: 8915
.. nonce: 3jntPd
.. section: Core and Builtins
Use os.path.abspath in the shutil module.
..
.. bpo: 11471
.. date: 8914
.. nonce: Uu752F
.. section: Core and Builtins
avoid generating a JUMP_FORWARD instruction at the end of an if-block if
there is no else-clause.  Original patch by Eugene Toder.
..
.. bpo: 22215
.. date: 8913
.. nonce: IBFi6H
.. section: Core and Builtins
Now ValueError is raised instead of TypeError when str or bytes argument
contains not permitted null character or byte.
..
.. bpo: 22258
.. date: 8912
.. nonce: 4FszMt
.. section: Core and Builtins
Fix the internal function set_inheritable() on Illumos. This platform
exposes the function ``ioctl(FIOCLEX)``, but calling it fails with errno is
ENOTTY: "Inappropriate ioctl for device". set_inheritable() now falls back
to the slower ``fcntl()`` (``F_GETFD`` and then ``F_SETFD``).
..
.. bpo: 21389
.. date: 8911
.. nonce: dnWZBn
.. section: Core and Builtins
Displaying the __qualname__ of the underlying function in the repr of a
bound method.
..
.. bpo: 22206
.. date: 8910
.. nonce: 0i_ihB
.. section: Core and Builtins
Using pthread, PyThread_create_key() now sets errno to ENOMEM and returns -1
(error) on integer overflow.
..
.. bpo: 20184
.. date: 8909
.. nonce: bb3uHY
.. section: Core and Builtins
Argument Clinic based signature introspection added for 30 of the builtin
functions.
..
.. bpo: 22116
.. date: 8908
.. nonce: auVmIt
.. section: Core and Builtins
C functions and methods (of the 'builtin_function_or_method' type) can now
be weakref'ed.  Patch by Wei Wu.
..
.. bpo: 22077
.. date: 8907
.. nonce: KZUDR-
.. section: Core and Builtins
Improve index error messages for bytearrays, bytes, lists, and tuples by
adding 'or slices'. Added ', not <typename>' for bytearrays. Original patch
by Claudiu Popa.
..
.. bpo: 20179
.. date: 8906
.. nonce: Nvhffc
.. section: Core and Builtins
Apply Argument Clinic to bytes and bytearray. Patch by Tal Einat.
..
.. bpo: 22082
.. date: 8905
.. nonce: 6X8Qmg
.. section: Core and Builtins
Clear interned strings in slotdefs.
..
.. bpo: 0
.. date: 8904
.. nonce: tuMnCc
.. section: Core and Builtins
Upgrade Unicode database to Unicode 7.0.0.
..
.. bpo: 21897
.. date: 8903
.. nonce: kiOGHe
.. section: Core and Builtins
Fix a crash with the f_locals attribute with closure variables when
frame.clear() has been called.
..
.. bpo: 21205
.. date: 8902
.. nonce: wZsx1K
.. section: Core and Builtins
Add a new ``__qualname__`` attribute to generator, the qualified name, and
use it in the representation of a generator (``repr(gen)``). The default
name of the generator (``__name__`` attribute) is now get from the function
instead of the code. Use ``gen.gi_code.co_name`` to get the name of the
code.
..
.. bpo: 21669
.. date: 8901
.. nonce: DFDrBA
.. section: Core and Builtins
With the aid of heuristics in SyntaxError.__init__, the parser now attempts
to generate more meaningful (or at least more search engine friendly) error
messages when "exec" and "print" are used as statements.
..
.. bpo: 21642
.. date: 8900
.. nonce: -lWoKz
.. section: Core and Builtins
In the conditional if-else expression, allow an integer written with no
space between itself and the ``else`` keyword (e.g. ``True if 42else
False``) to be valid syntax.
..
.. bpo: 21523
.. date: 8899
.. nonce: f_PPYO
.. section: Core and Builtins
Fix over-pessimistic computation of the stack effect of some opcodes in the
compiler.  This also fixes a quadratic compilation time issue noticeable
when compiling code with a large number of "and" and "or" operators.
..
.. bpo: 21418
.. date: 8898
.. nonce: z9jp1_
.. section: Core and Builtins
Fix a crash in the builtin function super() when called without argument and
without current frame (ex: embedded Python).
..
.. bpo: 21425
.. date: 8897
.. nonce: i3Teb8
.. section: Core and Builtins
Fix flushing of standard streams in the interactive interpreter.
..
.. bpo: 21435
.. date: 8896
.. nonce: ZojVOT
.. section: Core and Builtins
In rare cases, when running finalizers on objects in cyclic trash a bad
pointer dereference could occur due to a subtle flaw in internal iteration
logic.
..
.. bpo: 21377
.. date: 8895
.. nonce: OawYfl
.. section: Core and Builtins
PyBytes_Concat() now tries to concatenate in-place when the first argument
has a reference count of 1.  Patch by Nikolaus Rath.
..
.. bpo: 20355
.. date: 8894
.. nonce: OrCNkZ
.. section: Core and Builtins
-W command line options now have higher priority than the PYTHONWARNINGS
environment variable.  Patch by Arfrever.
..
.. bpo: 21274
.. date: 8893
.. nonce: fVGfwq
.. section: Core and Builtins
Define PATH_MAX for GNU/Hurd in Python/pythonrun.c.
..
.. bpo: 20904
.. date: 8892
.. nonce: fAGdj2
.. section: Core and Builtins
Support setting FPU precision on m68k.
..
.. bpo: 21209
.. date: 8891
.. nonce: nMljFr
.. section: Core and Builtins
Fix sending tuples to custom generator objects with the yield from syntax.
..
.. bpo: 21193
.. date: 8890
.. nonce: Dg98Oo
.. section: Core and Builtins
pow(a, b, c) now raises ValueError rather than TypeError when b is negative.
Patch by Josh Rosenberg.
..
.. bpo: 21176
.. date: 8889
.. nonce: mitDhW
.. section: Core and Builtins
PEP 465: Add the '@' operator for matrix multiplication.
..
.. bpo: 21134
.. date: 8888
.. nonce: ZL4SKo
.. section: Core and Builtins
Fix segfault when str is called on an uninitialized UnicodeEncodeError,
UnicodeDecodeError, or UnicodeTranslateError object.
..
.. bpo: 19537
.. date: 8887
.. nonce: AkuC_J
.. section: Core and Builtins
Fix PyUnicode_DATA() alignment under m68k.  Patch by Andreas Schwab.
..
.. bpo: 20929
.. date: 8886
.. nonce: 9NlUR7
.. section: Core and Builtins
Add a type cast to avoid shifting a negative number.
..
.. bpo: 20731
.. date: 8885
.. nonce: _03SZg
.. section: Core and Builtins
Properly position in source code files even if they are opened in text mode.
Patch by Serhiy Storchaka.
..
.. bpo: 20637
.. date: 8884
.. nonce: ppYU0o
.. section: Core and Builtins
Key-sharing now also works for instance dictionaries of subclasses.  Patch
by Peter Ingebretson.
..
.. bpo: 8297
.. date: 8883
.. nonce: _XdGON
.. section: Core and Builtins
Attributes missing from modules now include the module name in the error
text.  Original patch by ysj.ray.
..
.. bpo: 19995
.. date: 8882
.. nonce: mnHEzX
.. section: Core and Builtins
%c, %o, %x, and %X now raise TypeError on non-integer input.
..
.. bpo: 19655
.. date: 8881
.. nonce: JgVdes
.. section: Core and Builtins
The ASDL parser - used by the build process to generate code for managing
the Python AST in C - was rewritten. The new parser is self contained and
does not require to carry long the spark.py parser-generator library;
spark.py was removed from the source base.
..
.. bpo: 12546
.. date: 8880
.. nonce: 09naZ9
.. section: Core and Builtins
Allow ``\x00`` to be used as a fill character when using str, int, float,
and complex __format__ methods.
..
.. bpo: 20480
.. date: 8879
.. nonce: TIYPLo
.. section: Core and Builtins
Add ipaddress.reverse_pointer. Patch by Leon Weber.
..
.. bpo: 13598
.. date: 8878
.. nonce: GJelrw
.. section: Core and Builtins
Modify string.Formatter to support auto-numbering of replacement fields. It
now matches the behavior of str.format() in this regard. Patches by Phil
Elson and Ramchandra Apte.
..
.. bpo: 8931
.. date: 8877
.. nonce: M05x4f
.. section: Core and Builtins
Make alternate formatting ('#') for type 'c' raise an exception. In versions
prior to 3.5, '#' with 'c' had no effect. Now specifying it is an error.
Patch by Torsten Landschoff.
..
.. bpo: 23165
.. date: 8876
.. nonce: lk8uCE
.. section: Core and Builtins
Perform overflow checks before allocating memory in the _Py_char2wchar
function.
..
.. bpo: 23399
.. date: 8875
.. nonce: hXMYgA
.. section: Library
pyvenv creates relative symlinks where possible.
..
.. bpo: 20289
.. date: 8874
.. nonce: nio1N-
.. section: Library
cgi.FieldStorage() now supports the context management protocol.
..
.. bpo: 13128
.. date: 8873
.. nonce: vqEcsy
.. section: Library
Print response headers for CONNECT requests when debuglevel > 0. Patch by
Demian Brecht.
..
.. bpo: 15381
.. date: 8872
.. nonce: Xv-wu8
.. section: Library
Optimized io.BytesIO to make less allocations and copyings.
..
.. bpo: 22818
.. date: 8871
.. nonce: NYdAc9
.. section: Library
Splitting on a pattern that could match an empty string now raises a
warning.  Patterns that can only match empty strings are now rejected.
..
.. bpo: 23099
.. date: 8870
.. nonce: ZASrUo
.. section: Library
Closing io.BytesIO with exported buffer is rejected now to prevent
corrupting exported buffer.
..
.. bpo: 23326
.. date: 8869
.. nonce: 8VzlZD
.. section: Library
Removed __ne__ implementations.  Since fixing default __ne__ implementation
in issue #21408 they are redundant.
..
.. bpo: 23363
.. date: 8868
.. nonce: -koaol
.. section: Library
Fix possible overflow in itertools.permutations.
..
.. bpo: 23364
.. date: 8867
.. nonce: 3yBV-6
.. section: Library
Fix possible overflow in itertools.product.
..
.. bpo: 23366
.. date: 8866
.. nonce: tyAfm8
.. section: Library
Fixed possible integer overflow in itertools.combinations.
..
.. bpo: 23369
.. date: 8865
.. nonce: nqChyE
.. section: Library
Fixed possible integer overflow in _json.encode_basestring_ascii.
..
.. bpo: 23353
.. date: 8864
.. nonce: Iytkpc
.. section: Library
Fix the exception handling of generators in PyEval_EvalFrameEx(). At entry,
save or swap the exception state even if PyEval_EvalFrameEx() is called with
throwflag=0. At exit, the exception state is now always restored or swapped,
not only if why is WHY_YIELD or WHY_RETURN. Patch co-written with Antoine
Pitrou.
..
.. bpo: 14099
.. date: 8863
.. nonce: t9-HVE
.. section: Library
Restored support of writing ZIP files to tellable but non-seekable streams.
..
.. bpo: 14099
.. date: 8862
.. nonce: Myxxww
.. section: Library
Writing to ZipFile and reading multiple ZipExtFiles is threadsafe now.
..
.. bpo: 19361
.. date: 8861
.. nonce: 2mvrV3
.. section: Library
JSON decoder now raises JSONDecodeError instead of ValueError.
..
.. bpo: 18518
.. date: 8860
.. nonce: JXgicC
.. section: Library
timeit now rejects statements which can't be compiled outside a function or
a loop (e.g. "return" or "break").
..
.. bpo: 23094
.. date: 8859
.. nonce: -8AXSi
.. section: Library
Fixed readline with frames in Python implementation of pickle.
..
.. bpo: 23268
.. date: 8858
.. nonce: ATtRa5
.. section: Library
Fixed bugs in the comparison of ipaddress classes.
..
.. bpo: 21408
.. date: 8857
.. nonce: 0rI6tx
.. section: Library
Removed incorrect implementations of __ne__() which didn't returned
NotImplemented if __eq__() returned NotImplemented.  The default __ne__()
now works correctly.
..
.. bpo: 19996
.. date: 8856
.. nonce: 2-SiMf
.. section: Library
:class:`email.feedparser.FeedParser` now handles (malformed) headers with no
key rather than assuming the body has started.
..
.. bpo: 20188
.. date: 8855
.. nonce: xocY-2
.. section: Library
Support Application-Layer Protocol Negotiation (ALPN) in the ssl module.
..
.. bpo: 23133
.. date: 8854
.. nonce: 8p2Wnl
.. section: Library
Pickling of ipaddress objects now produces more compact and portable
representation.
..
.. bpo: 23248
.. date: 8853
.. nonce: FjcyCP
.. section: Library
Update ssl error codes from latest OpenSSL git master.
..
.. bpo: 23266
.. date: 8852
.. nonce: Mo7alR
.. section: Library
Much faster implementation of ipaddress.collapse_addresses() when there are
many non-consecutive addresses.
..
.. bpo: 23098
.. date: 8851
.. nonce: 7VwF3K
.. section: Library
64-bit dev_t is now supported in the os module.
..
.. bpo: 21817
.. date: 8850
.. nonce: xYUW-9
.. section: Library
When an exception is raised in a task submitted to a ProcessPoolExecutor,
the remote traceback is now displayed in the parent process.  Patch by
Claudiu Popa.
..
.. bpo: 15955
.. date: 8849
.. nonce: uvpBL4
.. section: Library
Add an option to limit output size when decompressing LZMA data.  Patch by
Nikolaus Rath and Martin Panter.
..
.. bpo: 23250
.. date: 8848
.. nonce: qNGAUf
.. section: Library
In the http.cookies module, capitalize "HttpOnly" and "Secure" as they are
written in the standard.
..
.. bpo: 23063
.. date: 8847
.. nonce: 9-UJRs
.. section: Library
In the distutils' check command, fix parsing of reST with code or code-block
directives.
..
.. bpo: 23209
.. date: 8846
.. nonce: I0bCCH
.. section: Library
selectors.BaseSelector.get_key() now raises a RuntimeError if the selector
is closed. And selectors.BaseSelector.close() now clears its internal
reference to the selector mapping to break a reference cycle. Initial patch
written by Martin Richard. (See also: bpo-23225)
..
.. bpo: 17911
.. date: 8845
.. nonce: yg65Iu
.. section: Library
Provide a way to seed the linecache for a PEP-302 module without actually
loading the code.
..
.. bpo: 17911
.. date: 8844
.. nonce: qeTePa
.. section: Library
Provide a new object API for traceback, including the ability to not lookup
lines at all until the traceback is actually rendered, without any trace of
the original objects being kept alive.
..
.. bpo: 19777
.. date: 8843
.. nonce: H_NDIA
.. section: Library
Provide a home() classmethod on Path objects.  Contributed by Victor Salgado
and Mayank Tripathi.
..
.. bpo: 23206
.. date: 8842
.. nonce: xSiYwq
.. section: Library
Make ``json.dumps(..., ensure_ascii=False)`` as fast as the default case of
``ensure_ascii=True``.  Patch by Naoki Inada.
..
.. bpo: 23185
.. date: 8841
.. nonce: KHyoSO
.. section: Library
Add math.inf and math.nan constants.
..
.. bpo: 23186
.. date: 8840
.. nonce: KzWLP2
.. section: Library
Add ssl.SSLObject.shared_ciphers() and ssl.SSLSocket.shared_ciphers() to
fetch the client's list ciphers sent at handshake.
..
.. bpo: 23143
.. date: 8839
.. nonce: AWxJXV
.. section: Library
Remove compatibility with OpenSSLs older than 0.9.8.
..
.. bpo: 23132
.. date: 8838
.. nonce: pbQcut
.. section: Library
Improve performance and introspection support of comparison methods created
by functool.total_ordering.
..
.. bpo: 19776
.. date: 8837
.. nonce: BxNgxd
.. section: Library
Add an expanduser() method on Path objects.
..
.. bpo: 23112
.. date: 8836
.. nonce: dZGf82
.. section: Library
Fix SimpleHTTPServer to correctly carry the query string and fragment when
it redirects to add a trailing slash.
..
.. bpo: 21793
.. date: 8835
.. nonce: T1kQBL
.. section: Library
Added http.HTTPStatus enums (i.e. HTTPStatus.OK, HTTPStatus.NOT_FOUND).
Patch by Demian Brecht.
..
.. bpo: 23093
.. date: 8834
.. nonce: cP7OqD
.. section: Library
In the io, module allow more operations to work on detached streams.
..
.. bpo: 23111
.. date: 8833
.. nonce: A34IA4
.. section: Library
In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol version.
..
.. bpo: 22585
.. date: 8832
.. nonce: F4BkNo
.. section: Library
On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), instead of
reading /dev/urandom, to get pseudo-random bytes.
..
.. bpo: 19104
.. date: 8831
.. nonce: _eIThy
.. section: Library
pprint now produces evaluable output for wrapped strings.
..
.. bpo: 23071
.. date: 8830
.. nonce: 3BSqF7
.. section: Library
Added missing names to codecs.__all__.  Patch by Martin Panter.
..
.. bpo: 22783
.. date: 8829
.. nonce: OfYxBd
.. section: Library
Pickling now uses the NEWOBJ opcode instead of the NEWOBJ_EX opcode if
possible.
..
.. bpo: 15513
.. date: 8828
.. nonce: 7yVnRE
.. section: Library
Added a __sizeof__ implementation for pickle classes.
..
.. bpo: 19858
.. date: 8827
.. nonce: cqOlIt
.. section: Library
pickletools.optimize() now aware of the MEMOIZE opcode, can produce more
compact result and no longer produces invalid output if input data contains
MEMOIZE opcodes together with PUT or BINPUT opcodes.
..
.. bpo: 22095
.. date: 8826
.. nonce: iISzxM
.. section: Library
Fixed HTTPConnection.set_tunnel with default port.  The port value in the
host header was set to "None".  Patch by Demian Brecht.
..
.. bpo: 23016
.. date: 8825
.. nonce: LyrPd_
.. section: Library
A warning no longer produces an AttributeError when the program is run with
pythonw.exe.
..
.. bpo: 21775
.. date: 8824
.. nonce: ELR_Al
.. section: Library
shutil.copytree(): fix crash when copying to VFAT. An exception handler
assumed that OSError objects always have a 'winerror' attribute. That is not
the case, so the exception handler itself raised AttributeError when run on
Linux (and, presumably, any other non-Windows OS). Patch by Greg Ward.
..
.. bpo: 1218234
.. date: 8823
.. nonce: 4GcoQK
.. section: Library
Fix inspect.getsource() to load updated source of reloaded module. Initial
patch by Berker Peksag.
..
.. bpo: 21740
.. date: 8822
.. nonce: TtAApO
.. section: Library
Support wrapped callables in doctest. Patch by Claudiu Popa.
..
.. bpo: 23009
.. date: 8821
.. nonce: -sW7gk
.. section: Library
Make sure selectors.EpollSelector.select() works when no FD is registered.
..
.. bpo: 22959
.. date: 8820
.. nonce: Vxt3EP
.. section: Library
In the constructor of http.client.HTTPSConnection, prefer the context's
check_hostname attribute over the *check_hostname* parameter.
..
.. bpo: 22696
.. date: 8819
.. nonce: pvdcxs
.. section: Library
Add function :func:`sys.is_finalizing` to know about interpreter shutdown.
..
.. bpo: 16043
.. date: 8818
.. nonce: TGIC7t
.. section: Library
Add a default limit for the amount of data xmlrpclib.gzip_decode will
return. This resolves :cve:`2013-1753`.
..
.. bpo: 14099
.. date: 8817
.. nonce: GJ5meQ
.. section: Library
ZipFile.open() no longer reopen the underlying file.  Objects returned by
ZipFile.open() can now operate independently of the ZipFile even if the
ZipFile was created by passing in a file-like object as the first argument
to the constructor.
..
.. bpo: 22966
.. date: 8816
.. nonce: zIxDrT
.. section: Library
Fix __pycache__ pyc file name clobber when pyc_compile is asked to compile a
source file containing multiple dots in the source file name.
..
.. bpo: 21971
.. date: 8815
.. nonce: XlTc22
.. section: Library
Update turtledemo doc and add module to the index.
..
.. bpo: 21032
.. date: 8814
.. nonce: wxT_41
.. section: Library
Fixed socket leak if HTTPConnection.getresponse() fails. Original patch by
Martin Panter.
..
.. bpo: 22407
.. date: 8813
.. nonce: CWi1wX
.. section: Library
Deprecated the use of re.LOCALE flag with str patterns or re.ASCII. It was
newer worked.
..
.. bpo: 22902
.. date: 8812
.. nonce: ZqXriA
.. section: Library
The "ip" command is now used on Linux to determine MAC address in
uuid.getnode().  Patch by Bruno Cauet.
..
.. bpo: 22960
.. date: 8811
.. nonce: 2VDILT
.. section: Library
Add a context argument to xmlrpclib.ServerProxy constructor.
..
.. bpo: 22389
.. date: 8810
.. nonce: 82DuwD
.. section: Library
Add contextlib.redirect_stderr().
..
.. bpo: 21356
.. date: 8809
.. nonce: 8NY75J
.. section: Library
Make ssl.RAND_egd() optional to support LibreSSL. The availability of the
function is checked during the compilation. Patch written by Bernard Spil.
..
.. bpo: 22915
.. date: 8808
.. nonce: 709UAo
.. section: Library
SAX parser now supports files opened with file descriptor or bytes path.
..
.. bpo: 22609
.. date: 8807
.. nonce: mmLoeb
.. section: Library
Constructors and update methods of mapping classes in the collections module
now accept the self keyword argument.
..
.. bpo: 22940
.. date: 8806
.. nonce: SP99Nf
.. section: Library
Add readline.append_history_file.
..
.. bpo: 19676
.. date: 8805
.. nonce: Wijwr8
.. section: Library
Added the "namereplace" error handler.
..
.. bpo: 22788
.. date: 8804
.. nonce: vofL9e
.. section: Library
Add *context* parameter to logging.handlers.HTTPHandler.
..
.. bpo: 22921
.. date: 8803
.. nonce: a4wx1C
.. section: Library
Allow SSLContext to take the *hostname* parameter even if OpenSSL doesn't
support SNI.
..
.. bpo: 22894
.. date: 8802
.. nonce: 4AkwPA
.. section: Library
TestCase.subTest() would cause the test suite to be stopped when in failfast
mode, even in the absence of failures.
..
.. bpo: 22796
.. date: 8801
.. nonce: _pFPFA
.. section: Library
HTTP cookie parsing is now stricter, in order to protect against potential
injection attacks.
..
.. bpo: 22370
.. date: 8800
.. nonce: j4y21u
.. section: Library
Windows detection in pathlib is now more robust.
..
.. bpo: 22841
.. date: 8799
.. nonce: 8wpk7T
.. section: Library
Reject coroutines in asyncio add_signal_handler(). Patch by Ludovic.Gasc.
..
.. bpo: 19494
.. date: 8798
.. nonce: 7O5O8k
.. section: Library
Added urllib.request.HTTPBasicPriorAuthHandler. Patch by Matej Cepl.
..
.. bpo: 22578
.. date: 8797
.. nonce: 6XZ0Jf
.. section: Library
Added attributes to the re.error class.
..
.. bpo: 22849
.. date: 8796
.. nonce: AqBPyj
.. section: Library
Fix possible double free in the io.TextIOWrapper constructor.
..
.. bpo: 12728
.. date: 8795
.. nonce: rHZmXO
.. section: Library
Different Unicode characters having the same uppercase but different
lowercase are now matched in case-insensitive regular expressions.
..
.. bpo: 22821
.. date: 8794
.. nonce: 30cQ-U
.. section: Library
Fixed fcntl() with integer argument on 64-bit big-endian platforms.
..
.. bpo: 21650
.. date: 8793
.. nonce: 62MLqr
.. section: Library
Add an ``--sort-keys`` option to ``json.tool`` CLI.
..
.. bpo: 22824
.. date: 8792
.. nonce: d5Txvr
.. section: Library
Updated reprlib output format for sets to use set literals. Patch
contributed by Berker Peksag.
..
.. bpo: 22824
.. date: 8791
.. nonce: H_r9uH
.. section: Library
Updated reprlib output format for arrays to display empty arrays without an
unnecessary empty list.  Suggested by Serhiy Storchaka.
..
.. bpo: 22406
.. date: 8790
.. nonce: sPlVbI
.. section: Library
Fixed the uu_codec codec incorrectly ported to 3.x. Based on patch by Martin
Panter.
..
.. bpo: 17293
.. date: 8789
.. nonce: Hk06bO
.. section: Library
uuid.getnode() now determines MAC address on AIX using netstat. Based on
patch by Aivars Kalvāns.
..
.. bpo: 22769
.. date: 8788
.. nonce: PunnvQ
.. section: Library
Fixed ttk.Treeview.tag_has() when called without arguments.
..
.. bpo: 22417
.. date: 8787
.. nonce: To4b7U
.. section: Library
Verify certificates by default in httplib (PEP 476).
..
.. bpo: 22775
.. date: 8786
.. nonce: V5aCUz
.. section: Library
Fixed unpickling of http.cookies.SimpleCookie with protocol 2 and above.
Patch by Tim Graham.
..
.. bpo: 22776
.. date: 8785
.. nonce: xNcRse
.. section: Library
Brought excluded code into the scope of a try block in SysLogHandler.emit().
..
.. bpo: 22665
.. date: 8784
.. nonce: j6Jlp8
.. section: Library
Add missing get_terminal_size and SameFileError to shutil.__all__.
..
.. bpo: 6623
.. date: 8783
.. nonce: 6LOidS
.. section: Library
Remove deprecated Netrc class in the ftplib module. Patch by Matt Chaput.
..
.. bpo: 17381
.. date: 8782
.. nonce: 4J5yv7
.. section: Library
Fixed handling of case-insensitive ranges in regular expressions.
..
.. bpo: 22410
.. date: 8781
.. nonce: 99YFdd
.. section: Library
Module level functions in the re module now cache compiled locale-dependent
regular expressions taking into account the locale.
..
.. bpo: 22759
.. date: 8780
.. nonce: BJPdiL
.. section: Library
Query methods on pathlib.Path() (exists(), is_dir(), etc.) now return False
when the underlying stat call raises NotADirectoryError.
..
.. bpo: 8876
.. date: 8779
.. nonce: A83Av4
.. section: Library
distutils now falls back to copying files when hard linking doesn't work.
This allows use with special filesystems such as VirtualBox shared folders.
..
.. bpo: 22217
.. date: 8778
.. nonce: nXzGur
.. section: Library
Implemented reprs of classes in the zipfile module.
..
.. bpo: 22457
.. date: 8777
.. nonce: Xd2Mk-
.. section: Library
Honour load_tests in the start_dir of discovery.
..
.. bpo: 18216
.. date: 8776
.. nonce: trTZw4
.. section: Library
gettext now raises an error when a .mo file has an unsupported major version
number.  Patch by Aaron Hill.
..
.. bpo: 13918
.. date: 8775
.. nonce: -OnUhD
.. section: Library
Provide a locale.delocalize() function which can remove locale-specific
number formatting from a string representing a number, without then
converting it to a specific type.  Patch by Cédric Krier.
..
.. bpo: 22676
.. date: 8774
.. nonce: d2v8QM
.. section: Library
Make the pickling of global objects which don't have a __module__ attribute
less slow.
..
.. bpo: 18853
.. date: 8773
.. nonce: 76DrPD
.. section: Library
Fixed ResourceWarning in shlex.__nain__.
..
.. bpo: 9351
.. date: 8772
.. nonce: u5UI-6
.. section: Library
Defaults set with set_defaults on an argparse subparser are no longer
ignored when also set on the parent parser.
..
.. bpo: 7559
.. date: 8771
.. nonce: QG35ZP
.. section: Library
unittest test loading ImportErrors are reported as import errors with their
import exception rather than as attribute errors after the import has
already failed.
..
.. bpo: 19746
.. date: 8770
.. nonce: S1dg1K
.. section: Library
Make it possible to examine the errors from unittest discovery without
executing the test suite. The new ``errors`` attribute on ``TestLoader`` exposes
these non-fatal errors encountered during discovery.
..
.. bpo: 21991
.. date: 8769
.. nonce: Mkm0IN
.. section: Library
Make email.headerregistry's header 'params' attributes be read-only
(MappingProxyType).  Previously the dictionary was modifiable but a new one
was created on each access of the attribute.
..
.. bpo: 22638
.. date: 8768
.. nonce: Ur73gJ
.. section: Library
SSLv3 is now disabled throughout the standard library. It can still be
enabled by instantiating a SSLContext manually.
..
.. bpo: 22641
.. date: 8767
.. nonce: m0ldtl
.. section: Library
In asyncio, the default SSL context for client connections is now created
using ssl.create_default_context(), for stronger security.
..
.. bpo: 17401
.. date: 8766
.. nonce: SZd19P
.. section: Library
Include closefd in io.FileIO repr.
..
.. bpo: 21338
.. date: 8765
.. nonce: evDyHD
.. section: Library
Add silent mode for compileall. quiet parameters of compile_{dir, file,
path} functions now have a multilevel value. Also, -q option of the CLI now
have a multilevel value. Patch by Thomas Kluyver.
..
.. bpo: 20152
.. date: 8764
.. nonce: 9_o92A
.. section: Library
Convert the array and cmath modules to Argument Clinic.
..
.. bpo: 18643
.. date: 8763
.. nonce: 6Qdc0J
.. section: Library
Add socket.socketpair() on Windows.
..
.. bpo: 22435
.. date: 8762
.. nonce: s2U7Zm
.. section: Library
Fix a file descriptor leak when socketserver bind fails.
..
.. bpo: 13096
.. date: 8761
.. nonce: rsailB
.. section: Library
Fixed segfault in CTypes POINTER handling of large values.
..
.. bpo: 11694
.. date: 8760
.. nonce: JuDrch
.. section: Library
Raise ConversionError in xdrlib as documented.  Patch by Filip Gruszczyński
and Claudiu Popa.
..
.. bpo: 19380
.. date: 8759
.. nonce: nqgoRQ
.. section: Library
Optimized parsing of regular expressions.
..
.. bpo: 1519638
.. date: 8758
.. nonce: 2pbuog
.. section: Library
Now unmatched groups are replaced with empty strings in re.sub() and
re.subn().
..
.. bpo: 18615
.. date: 8757
.. nonce: 65TxnY
.. section: Library
sndhdr.what/whathdr now return a namedtuple.
..
.. bpo: 22462
.. date: 8756
.. nonce: 1h4Kpr
.. section: Library
Fix pyexpat's creation of a dummy frame to make it appear in exception
tracebacks.
..
.. bpo: 21965
.. date: 8755
.. nonce: n_jnXs
.. section: Library
Add support for in-memory SSL to the ssl module.  Patch by Geert Jansen.
..
.. bpo: 21173
.. date: 8754
.. nonce: egkbEx
.. section: Library
Fix len() on a WeakKeyDictionary when .clear() was called with an iterator
alive.
..
.. bpo: 11866
.. date: 8753
.. nonce: xrvbIC
.. section: Library
Eliminated race condition in the computation of names for new threads.
..
.. bpo: 21905
.. date: 8752
.. nonce: coKyRo
.. section: Library
Avoid RuntimeError in pickle.whichmodule() when sys.modules is mutated while
iterating.  Patch by Olivier Grisel.
..
.. bpo: 11271
.. date: 8751
.. nonce: ZYiJru
.. section: Library
concurrent.futures.Executor.map() now takes a *chunksize* argument to allow
batching of tasks in child processes and improve performance of
ProcessPoolExecutor.  Patch by Dan O'Reilly.
..
.. bpo: 21883
.. date: 8750
.. nonce: qpuQu6
.. section: Library
os.path.join() and os.path.relpath() now raise a TypeError with more helpful
error message for unsupported or mismatched types of arguments.
..
.. bpo: 22219
.. date: 8749
.. nonce: l9Enh9
.. section: Library
The zipfile module CLI now adds entries for directories (including empty
directories) in ZIP file.
..
.. bpo: 22449
.. date: 8748
.. nonce: nFW_Fl
.. section: Library
In the ssl.SSLContext.load_default_certs, consult the environmental
variables SSL_CERT_DIR and SSL_CERT_FILE on Windows.
..
.. bpo: 22508
.. date: 8747
.. nonce: 2LbnGQ
.. section: Library
The email.__version__ variable has been removed; the email code is no longer
shipped separately from the stdlib, and __version__ hasn't been updated in
several releases.
..
.. bpo: 20076
.. date: 8746
.. nonce: -7OIVB
.. section: Library
Added non derived UTF-8 aliases to locale aliases table.
..
.. bpo: 20079
.. date: 8745
.. nonce: qM949O
.. section: Library
Added locales supported in glibc 2.18 to locale alias table.
..
.. bpo: 20218
.. date: 8744
.. nonce: CMgOyE
.. section: Library
Added convenience methods read_text/write_text and read_bytes/ write_bytes
to pathlib.Path objects.
..
.. bpo: 22396
.. date: 8743
.. nonce: cQSizA
.. section: Library
On 32-bit AIX platform, don't expose os.posix_fadvise() nor
os.posix_fallocate() because their prototypes in system headers are wrong.
..
.. bpo: 22517
.. date: 8742
.. nonce: qT6-aB
.. section: Library
When an io.BufferedRWPair object is deallocated, clear its weakrefs.
..
.. bpo: 22437
.. date: 8741
.. nonce: MRVnmQ
.. section: Library
Number of capturing groups in regular expression is no longer limited by
100.
..
.. bpo: 17442
.. date: 8740
.. nonce: rnc87D
.. section: Library
InteractiveInterpreter now displays the full chained traceback in its
showtraceback method, to match the built in interactive interpreter.
..
.. bpo: 23392
.. date: 8739
.. nonce: Pe7_WK
.. section: Library
Added tests for marshal C API that works with FILE*.
..
.. bpo: 10510
.. date: 8738
.. nonce: N-ntcD
.. section: Library
distutils register and upload methods now use HTML standards compliant CRLF
line endings.
..
.. bpo: 9850
.. date: 8737
.. nonce: D-UnVi
.. section: Library
Fixed macpath.join() for empty first component.  Patch by Oleg Oshmyan.
..
.. bpo: 5309
.. date: 8736
.. nonce: pVMmQ8
.. section: Library
distutils' build and build_ext commands now accept a ``-j`` option to enable
parallel building of extension modules.
..
.. bpo: 22448
.. date: 8735
.. nonce: fAapvE
.. section: Library
Improve canceled timer handles cleanup to prevent unbound memory usage.
Patch by Joshua Moore-Oliva.
..
.. bpo: 22427
.. date: 8734
.. nonce: TZ5S_u
.. section: Library
TemporaryDirectory no longer attempts to clean up twice when used in the
with statement in generator.
..
.. bpo: 22362
.. date: 8733
.. nonce: xIBThN
.. section: Library
Forbidden ambiguous octal escapes out of range 0-0o377 in regular
expressions.
..
.. bpo: 20912
.. date: 8732
.. nonce: cAq3mZ
.. section: Library
Now directories added to ZIP file have correct Unix and MS-DOS directory
attributes.
..
.. bpo: 21866
.. date: 8731
.. nonce: hSc4wM
.. section: Library
ZipFile.close() no longer writes ZIP64 central directory records if
allowZip64 is false.
..
.. bpo: 22278
.. date: 8730
.. nonce: abqBXZ
.. section: Library
Fix urljoin problem with relative urls, a regression observed after changes
to issue22118 were submitted.
..
.. bpo: 22415
.. date: 8729
.. nonce: xJLAvI
.. section: Library
Fixed debugging output of the GROUPREF_EXISTS opcode in the re module.
Removed trailing spaces in debugging output.
..
.. bpo: 22423
.. date: 8728
.. nonce: Rtb4oT
.. section: Library
Unhandled exception in thread no longer causes unhandled AttributeError when
sys.stderr is None.
..
.. bpo: 21332
.. date: 8727
.. nonce: Gwxwlr
.. section: Library
Ensure that ``bufsize=1`` in subprocess.Popen() selects line buffering,
rather than block buffering.  Patch by Akira Li.
..
.. bpo: 21091
.. date: 8726
.. nonce: M5hAtT
.. section: Library
Fix API bug: email.message.EmailMessage.is_attachment is now a method.
..
.. bpo: 21079
.. date: 8725
.. nonce: czVcL8
.. section: Library
Fix email.message.EmailMessage.is_attachment to return the correct result
when the header has parameters as well as a value.
..
.. bpo: 22247
.. date: 8724
.. nonce: sGIpR3
.. section: Library
Add NNTPError to nntplib.__all__.
..
.. bpo: 22366
.. date: 8723
.. nonce: Dd1eFj
.. section: Library
urllib.request.urlopen will accept a context object (SSLContext) as an
argument which will then be used for HTTPS connection. Patch by Alex Gaynor.
..
.. bpo: 4180
.. date: 8722
.. nonce: QBx0JK
.. section: Library
The warnings registries are now reset when the filters are modified.
..
.. bpo: 22419
.. date: 8721
.. nonce: FqH4aC
.. section: Library
Limit the length of incoming HTTP request in wsgiref server to 65536 bytes
and send a 414 error code for higher lengths. Patch contributed by Devin
Cook.
..
.. bpo: 0
.. date: 8720
.. nonce: y7r3O2
.. section: Library
Lax cookie parsing in http.cookies could be a security issue when combined
with non-standard cookie handling in some web browsers.  Reported by Sergey
Bobrov.
..
.. bpo: 20537
.. date: 8719
.. nonce: E0CE54
.. section: Library
logging methods now accept an exception instance as well as a Boolean value
or exception tuple. Thanks to Yury Selivanov for the patch.
..
.. bpo: 22384
.. date: 8718
.. nonce: -Nl4He
.. section: Library
An exception in Tkinter callback no longer crashes the program when it is
run with pythonw.exe.
..
.. bpo: 22168
.. date: 8717
.. nonce: vLeKWC
.. section: Library
Prevent turtle AttributeError with non-default Canvas on OS X.
..
.. bpo: 21147
.. date: 8716
.. nonce: w9DE17
.. section: Library
sqlite3 now raises an exception if the request contains a null character
instead of truncating it.  Based on patch by Victor Stinner.
..
.. bpo: 13968
.. date: 8715
.. nonce: 1okGqm
.. section: Library
The glob module now supports recursive search in subdirectories using the
``**`` pattern.
..
.. bpo: 21951
.. date: 8714
.. nonce: 3vS4LK
.. section: Library
Fixed a crash in Tkinter on AIX when called Tcl command with empty string or
tuple argument.
..
.. bpo: 21951
.. date: 8713
.. nonce: _CCC4v
.. section: Library
Tkinter now most likely raises MemoryError instead of crash if the memory
allocation fails.
..
.. bpo: 22338
.. date: 8712
.. nonce: rKlCMz
.. section: Library
Fix a crash in the json module on memory allocation failure.
..
.. bpo: 12410
.. date: 8711
.. nonce: oFf-cB
.. section: Library
imaplib.IMAP4 now supports the context management protocol. Original patch
by Tarek Ziadé.
..
.. bpo: 21270
.. date: 8710
.. nonce: qMBaY-
.. section: Library
We now override tuple methods in mock.call objects so that they can be used
as normal call attributes.
..
.. bpo: 16662
.. date: 8709
.. nonce: Nghn-Y
.. section: Library
``load_tests()`` is now unconditionally run when it is present in a package's
``__init__.py``.  ``TestLoader.loadTestsFromModule()`` still accepts use_load_tests,
but it is deprecated and ignored.  A new keyword-only attribute ``pattern`` is
added and documented.  Patch given by Robert Collins, tweaked by Barry
Warsaw.
..
.. bpo: 22226
.. date: 8708
.. nonce: T1ZMPY
.. section: Library
First letter no longer is stripped from the "status" key in the result of
Treeview.heading().
..
.. bpo: 19524
.. date: 8707
.. nonce: EQJjlF
.. section: Library
Fixed resource leak in the HTTP connection when an invalid response is
received.  Patch by Martin Panter.
..
.. bpo: 20421
.. date: 8706
.. nonce: iR0S1s
.. section: Library
Add a .version() method to SSL sockets exposing the actual protocol version
in use.
..
.. bpo: 19546
.. date: 8705
.. nonce: 8VdYBK
.. section: Library
configparser exceptions no longer expose implementation details. Chained
KeyErrors are removed, which leads to cleaner tracebacks.  Patch by Claudiu
Popa.
..
.. bpo: 22051
.. date: 8704
.. nonce: cUjFqL
.. section: Library
turtledemo no longer reloads examples to re-run them. Initialization of
variables and gui setup should be done in main(), which is called each time
a demo is run, but not on import.
..
.. bpo: 21933
.. date: 8703
.. nonce: IhMjN1
.. section: Library
Turtledemo users can change the code font size with a menu selection or
control(command) '-' or '+' or control-mousewheel. Original patch by Lita
Cho.
..
.. bpo: 21597
.. date: 8702
.. nonce: aPTCWJ
.. section: Library
The separator between the turtledemo text pane and the drawing canvas can
now be grabbed and dragged with a mouse.  The code text pane can be widened
to easily view or copy the full width of the text.  The canvas can be
widened on small screens.  Original patches by Jan Kanis and Lita Cho.
..
.. bpo: 18132
.. date: 8701
.. nonce: 2R2nwM
.. section: Library
Turtledemo buttons no longer disappear when the window is shrunk.  Original
patches by Jan Kanis and Lita Cho.
..
.. bpo: 22043
.. date: 8700
.. nonce: Q6RvGL
.. section: Library
time.monotonic() is now always available. ``threading.Lock.acquire()``,
``threading.RLock.acquire()`` and socket operations now use a monotonic
clock, instead of the system clock, when a timeout is used.
..
.. bpo: 21527
.. date: 8699
.. nonce: N5WPxr
.. section: Library
Add a default number of workers to ThreadPoolExecutor equal to 5 times the
number of CPUs.  Patch by Claudiu Popa.
..
.. bpo: 22216
.. date: 8698
.. nonce: Cmalu6
.. section: Library
smtplib now resets its state more completely after a quit.  The most obvious
consequence of the previous behavior was a STARTTLS failure during a
connect/starttls/quit/connect/starttls sequence.
..
.. bpo: 22098
.. date: 8697
.. nonce: 5JYiQN
.. section: Library
ctypes' BigEndianStructure and LittleEndianStructure now define an empty
__slots__ so that subclasses don't always get an instance dict.  Patch by
Claudiu Popa.
..
.. bpo: 22185
.. date: 8696
.. nonce: 1SCCIK
.. section: Library
Fix an occasional RuntimeError in threading.Condition.wait() caused by
mutation of the waiters queue without holding the lock.  Patch by Doug
Zongker.
..
.. bpo: 22287
.. date: 8695
.. nonce: awH2AI
.. section: Library
On UNIX, _PyTime_gettimeofday() now uses clock_gettime(CLOCK_REALTIME) if
available. As a side effect, Python now depends on the librt library on
Solaris and on Linux (only with glibc older than 2.17).
..
.. bpo: 22182
.. date: 8694
.. nonce: 5EG1Bc
.. section: Library
Use e.args to unpack exceptions correctly in distutils.file_util.move_file.
Patch by Claudiu Popa.
..
.. bpo: 0
.. date: 8693
.. nonce: zBfe8J
.. section: Library
The webbrowser module now uses subprocess's start_new_session=True rather
than a potentially risky preexec_fn=os.setsid call.
..
.. bpo: 22042
.. date: 8692
.. nonce: WZvb8s
.. section: Library
signal.set_wakeup_fd(fd) now raises an exception if the file descriptor is
in blocking mode.
..
.. bpo: 16808
.. date: 8691
.. nonce: kPy_5U
.. section: Library
inspect.stack() now returns a named tuple instead of a tuple. Patch by
Daniel Shahaf.
..
.. bpo: 22236
.. date: 8690
.. nonce: 1utXkg
.. section: Library
Fixed Tkinter images copying operations in NoDefaultRoot mode.
..
.. bpo: 2527
.. date: 8689
.. nonce: fR2GS6
.. section: Library
Add a *globals* argument to timeit functions, in order to override the
globals namespace in which the timed code is executed. Patch by Ben Roberts.
..
.. bpo: 22118
.. date: 8688
.. nonce: 3gdkOF
.. section: Library
Switch urllib.parse to use RFC 3986 semantics for the resolution of relative
URLs, rather than RFCs 1808 and 2396. Patch by Demian Brecht.
..
.. bpo: 21549
.. date: 8687
.. nonce: i1LVvg
.. section: Library
Added the "members" parameter to TarFile.list().
..
.. bpo: 19628
.. date: 8686
.. nonce: ssQVP8
.. section: Library
Allow compileall recursion depth to be specified with a -r option.
..
.. bpo: 15696
.. date: 8685
.. nonce: PTwXYJ
.. section: Library
Add a __sizeof__ implementation for mmap objects on Windows.
..
.. bpo: 22068
.. date: 8684
.. nonce: wCdaW0
.. section: Library
Avoided reference loops with Variables and Fonts in Tkinter.
..
.. bpo: 22165
.. date: 8683
.. nonce: J1np4o
.. section: Library
SimpleHTTPRequestHandler now supports undecodable file names.
..
.. bpo: 15381
.. date: 8682
.. nonce: Ia8pf6
.. section: Library
Optimized line reading in io.BytesIO.
..
.. bpo: 8797
.. date: 8681
.. nonce: aJcIPu
.. section: Library
Raise HTTPError on failed Basic Authentication immediately. Initial patch by
Sam Bull.
..
.. bpo: 20729
.. date: 8680
.. nonce: I-1Lap
.. section: Library
Restored the use of lazy iterkeys()/itervalues()/iteritems() in the mailbox
module.
..
.. bpo: 21448
.. date: 8679
.. nonce: THJSYB
.. section: Library
Changed FeedParser feed() to avoid *O*\ (*n*\ :sup:`2`) behavior when parsing long line.
Original patch by Raymond Hettinger.
..
.. bpo: 22184
.. date: 8678
.. nonce: UCbSOt
.. section: Library
The functools LRU Cache decorator factory now gives an earlier and clearer
error message when the user forgets the required parameters.
..
.. bpo: 17923
.. date: 8677
.. nonce: YI_QjG
.. section: Library
glob() patterns ending with a slash no longer match non-dirs on AIX.  Based
on patch by Delhallt.
..
.. bpo: 21725
.. date: 8676
.. nonce: eIu-2N
.. section: Library
Added support for RFC 6531 (SMTPUTF8) in smtpd.
..
.. bpo: 22176
.. date: 8675
.. nonce: rgbRyg
.. section: Library
Update the ctypes module's libffi to v3.1.  This release adds support for
the Linux AArch64 and POWERPC ELF ABIv2 little endian architectures.
..
.. bpo: 5411
.. date: 8674
.. nonce: 5Utapn
.. section: Library
Added support for the "xztar" format in the shutil module.
..
.. bpo: 21121
.. date: 8673
.. nonce: ZLsRil
.. section: Library
Don't force 3rd party C extensions to be built with
-Werror=declaration-after-statement.
..
.. bpo: 21975
.. date: 8672
.. nonce: MI8ntO
.. section: Library
Fixed crash when using uninitialized sqlite3.Row (in particular when
unpickling pickled sqlite3.Row).  sqlite3.Row is now initialized in the
__new__() method.
..
.. bpo: 20170
.. date: 8671
.. nonce: 8QfhN7
.. section: Library
Convert posixmodule to use Argument Clinic.
..
.. bpo: 21539
.. date: 8670
.. nonce: YccmZF
.. section: Library
Add an *exists_ok* argument to ``Pathlib.mkdir()`` to mimic ``mkdir -p`` and
``os.makedirs()`` functionality.  When true, ignore ``FileExistsErrors``.  Patch
by Berker Peksag.
..
.. bpo: 22127
.. date: 8669
.. nonce: 0l2OO5
.. section: Library
Bypass IDNA for pure-ASCII host names in the socket module (in particular
for numeric IPs).
..
.. bpo: 21047
.. date: 8668
.. nonce: XfUQG3
.. section: Library
set the default value for the *convert_charrefs* argument of HTMLParser to
True.  Patch by Berker Peksag.
..
.. bpo: 0
.. date: 8667
.. nonce: 56bAnQ
.. section: Library
Add an __all__ to html.entities.
..
.. bpo: 15114
.. date: 8666
.. nonce: jXwseC
.. section: Library
the strict mode and argument of HTMLParser, HTMLParser.error, and the
HTMLParserError exception have been removed.
..
.. bpo: 22085
.. date: 8665
.. nonce: 3JM_Aw
.. section: Library
Dropped support of Tk 8.3 in Tkinter.
..
.. bpo: 21580
.. date: 8664
.. nonce: 3ssycS
.. section: Library
Now Tkinter correctly handles bytes arguments passed to Tk. In particular
this allows initializing images from binary data.
..
.. bpo: 22003
.. date: 8663
.. nonce: 4ZIDS1
.. section: Library
When initialized from a bytes object, io.BytesIO() now defers making a copy
until it is mutated, improving performance and memory use on some use cases.
Patch by David Wilson.
..
.. bpo: 22018
.. date: 8662
.. nonce: 6ApxSH
.. section: Library
On Windows, signal.set_wakeup_fd() now also supports sockets. A side effect
is that Python depends to the WinSock library.
..
.. bpo: 22054
.. date: 8661
.. nonce: zp6Svw
.. section: Library
Add os.get_blocking() and os.set_blocking() functions to get and set the
blocking mode of a file descriptor (False if the O_NONBLOCK flag is set,
True otherwise). These functions are not available on Windows.
..
.. bpo: 17172
.. date: 8660
.. nonce: R_LI_2
.. section: Library
Make turtledemo start as active on OS X even when run with subprocess.
Patch by Lita Cho.
..
.. bpo: 21704
.. date: 8659
.. nonce: gL3ikj
.. section: Library
Fix build error for _multiprocessing when semaphores are not available.
Patch by Arfrever Frehtes Taifersar Arahesis.
..
.. bpo: 20173
.. date: 8658
.. nonce: FAL-4L
.. section: Library
Convert sha1, sha256, sha512 and md5 to ArgumentClinic. Patch by Vajrasky
Kok.
..
.. bpo: 0
.. date: 8657
.. nonce: G25tq3
.. section: Library
Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError on
closed socket. repr(socket.socket) already works fine.
..
.. bpo: 22033
.. date: 8656
.. nonce: nkBNci
.. section: Library
Reprs of most Python implemented classes now contain actual class name
instead of hardcoded one.
..
.. bpo: 21947
.. date: 8655
.. nonce: mlisu-
.. section: Library
The dis module can now disassemble generator-iterator objects based on their
gi_code attribute. Patch by Clement Rouault.
..
.. bpo: 16133
.. date: 8654
.. nonce: tYuYQF
.. section: Library
The asynchat.async_chat.handle_read() method now ignores BlockingIOError
exceptions.
..
.. bpo: 22044
.. date: 8653
.. nonce: t09GRU
.. section: Library
Fixed premature DECREF in call_tzinfo_method. Patch by Tom Flanagan.
..
.. bpo: 19884
.. date: 8652
.. nonce: v73gSn
.. section: Library
readline: Disable the meta modifier key if stdout is not a terminal to not
write the ANSI sequence ``"\033[1034h"`` into stdout. This sequence is used
on some terminal (ex: TERM=xterm-256color") to enable support of 8 bit
characters.
..
.. bpo: 4350
.. date: 8651
.. nonce: nrTzJn
.. section: Library
Removed a number of out-of-dated and non-working for a long time Tkinter
methods.
..
.. bpo: 6167
.. date: 8650
.. nonce: n9dV_D
.. section: Library
Scrollbar.activate() now returns the name of active element if the argument
is not specified.  Scrollbar.set() now always accepts only 2 arguments.
..
.. bpo: 15275
.. date: 8649
.. nonce: jk0tTI
.. section: Library
Clean up and speed up the ntpath module.
..
.. bpo: 21888
.. date: 8648
.. nonce: danlpz
.. section: Library
plistlib's load() and loads() now work if the fmt parameter is specified.
..
.. bpo: 22032
.. date: 8647
.. nonce: UklzQW
.. section: Library
__qualname__ instead of __name__ is now always used to format fully
qualified class names of Python implemented classes.
..
.. bpo: 22031
.. date: 8646
.. nonce: 9aazp1
.. section: Library
Reprs now always use hexadecimal format with the "0x" prefix when contain an
id in form " at 0x...".
..
.. bpo: 22018
.. date: 8645
.. nonce: b_JTHH
.. section: Library
signal.set_wakeup_fd() now raises an OSError instead of a ValueError on
``fstat()`` failure.
..
.. bpo: 21044
.. date: 8644
.. nonce: 16xo9u
.. section: Library
tarfile.open() now handles fileobj with an integer 'name' attribute.  Based
on patch by Antoine Pietri.
..
.. bpo: 21966
.. date: 8643
.. nonce: hHD9MK
.. section: Library
Respect -q command-line option when code module is ran.
..
.. bpo: 19076
.. date: 8642
.. nonce: xCoIai
.. section: Library
Don't pass the redundant 'file' argument to self.error().
..
.. bpo: 16382
.. date: 8641
.. nonce: -XBK7z
.. section: Library
Improve exception message of warnings.warn() for bad category. Initial patch
by Phil Elson.
..
.. bpo: 21932
.. date: 8640
.. nonce: LK_5S1
.. section: Library
os.read() now uses a :c:func:`Py_ssize_t` type instead of :c:expr:`int` for
the size to support reading more than 2 GB at once. On Windows, the size is
truncated to INT_MAX. As any call to os.read(), the OS may read less bytes
than the number of requested bytes.
..
.. bpo: 21942
.. date: 8639
.. nonce: TLOS41
.. section: Library
Fixed source file viewing in pydoc's server mode on Windows.
..
.. bpo: 11259
.. date: 8638
.. nonce: GxfYnE
.. section: Library
asynchat.async_chat().set_terminator() now raises a ValueError if the number
of received bytes is negative.
..
.. bpo: 12523
.. date: 8637
.. nonce: XBdAky
.. section: Library
asynchat.async_chat.push() now raises a TypeError if it doesn't get a bytes
string
..
.. bpo: 21707
.. date: 8636
.. nonce: rrY_wd
.. section: Library
Add missing kwonlyargcount argument to ModuleFinder.replace_paths_in_code().
..
.. bpo: 20639
.. date: 8635
.. nonce: YdvOpp
.. section: Library
calling Path.with_suffix('') allows removing the suffix again.  Patch by
July Tikhonov.
..
.. bpo: 21714
.. date: 8634
.. nonce: HhkGXW
.. section: Library
Disallow the construction of invalid paths using Path.with_name().  Original
patch by Antony Lee.
..
.. bpo: 15014
.. date: 8633
.. nonce: dB50zb
.. section: Library
Added 'auth' method to smtplib to make implementing auth mechanisms simpler,
and used it internally in the login method.
..
.. bpo: 21151
.. date: 8632
.. nonce: o7IuiD
.. section: Library
Fixed a segfault in the winreg module when ``None`` is passed as a
``REG_BINARY`` value to SetValueEx.  Patch by John Ehresman.
..
.. bpo: 21090
.. date: 8631
.. nonce: 20Ooif
.. section: Library
io.FileIO.readall() does not ignore I/O errors anymore. Before, it ignored
I/O errors if at least the first C call read() succeed.
..
.. bpo: 5800
.. date: 8630
.. nonce: ZJiLZP
.. section: Library
headers parameter of wsgiref.headers.Headers is now optional. Initial patch
by Pablo Torres Navarrete and SilentGhost.
..
.. bpo: 21781
.. date: 8629
.. nonce: u_oiv9
.. section: Library
ssl.RAND_add() now supports strings longer than 2 GB.
..
.. bpo: 21679
.. date: 8628
.. nonce: CTVT9A
.. section: Library
Prevent extraneous fstat() calls during open().  Patch by Bohuslav Kabrda.
..
.. bpo: 21863
.. date: 8627
.. nonce: BzbwSL
.. section: Library
cProfile now displays the module name of C extension functions, in addition
to their own name.
..
.. bpo: 11453
.. date: 8626
.. nonce: 53Gr_R
.. section: Library
asyncore: emit a ResourceWarning when an unclosed file_wrapper object is
destroyed. The destructor now closes the file if needed. The close() method
can now be called twice: the second call does nothing.
..
.. bpo: 21858
.. date: 8625
.. nonce: 0hbFBG
.. section: Library
Better handling of Python exceptions in the sqlite3 module.
..
.. bpo: 21476
.. date: 8624
.. nonce: VN-5pW
.. section: Library
Make sure the email.parser.BytesParser TextIOWrapper is discarded after
parsing, so the input file isn't unexpectedly closed.
..
.. bpo: 20295
.. date: 8623
.. nonce: U1MPhw
.. section: Library
imghdr now recognizes OpenEXR format images.
..
.. bpo: 21729
.. date: 8622
.. nonce: dk7o_U
.. section: Library
Used the "with" statement in the dbm.dumb module to ensure files closing.
Patch by Claudiu Popa.
..
.. bpo: 21491
.. date: 8621
.. nonce: Zxmut-
.. section: Library
socketserver: Fix a race condition in child processes reaping.
..
.. bpo: 21719
.. date: 8620
.. nonce: DhQz3I
.. section: Library
Added the ``st_file_attributes`` field to os.stat_result on Windows.
..
.. bpo: 21832
.. date: 8619
.. nonce: PBA0Uu
.. section: Library
Require named tuple inputs to be exact strings.
..
.. bpo: 21722
.. date: 8618
.. nonce: WTHuRy
.. section: Library
The distutils "upload" command now exits with a non-zero return code when
uploading fails.  Patch by Martin Dengler.
..
.. bpo: 21723
.. date: 8617
.. nonce: r86fwb
.. section: Library
asyncio.Queue: support any type of number (ex: float) for the maximum size.
Patch written by Vajrasky Kok.
..
.. bpo: 21711
.. date: 8616
.. nonce: JWPFQZ
.. section: Library
support for "site-python" directories has now been removed from the site
module (it was deprecated in 3.4).
..
.. bpo: 17552
.. date: 8615
.. nonce: NunErD
.. section: Library
new socket.sendfile() method allowing a file to be sent over a socket by
using high-performance os.sendfile() on UNIX. Patch by Giampaolo Rodola'.
..
.. bpo: 18039
.. date: 8614
.. nonce: vC9hNy
.. section: Library
dbm.dump.open() now always creates a new database when the flag has the
value 'n'.  Patch by Claudiu Popa.
..
.. bpo: 21326
.. date: 8613
.. nonce: Y6iW3s
.. section: Library
Add a new is_closed() method to asyncio.BaseEventLoop. run_forever() and
run_until_complete() methods of asyncio.BaseEventLoop now raise an exception
if the event loop was closed.
..
.. bpo: 21766
.. date: 8612
.. nonce: 0xk_xC
.. section: Library
Prevent a security hole in CGIHTTPServer by URL unquoting paths before
checking for a CGI script at that path.
..
.. bpo: 21310
.. date: 8611
.. nonce: 2mjByJ
.. section: Library
Fixed possible resource leak in failed open().
..
.. bpo: 21256
.. date: 8610
.. nonce: dGq6cw
.. section: Library
Printout of keyword args should be in deterministic order in a mock function
call. This will help to write better doctests.
..
.. bpo: 21677
.. date: 8609
.. nonce: 58CDDD
.. section: Library
Fixed chaining nonnormalized exceptions in io close() methods.
..
.. bpo: 11709
.. date: 8608
.. nonce: JdObvL
.. section: Library
Fix the pydoc.help function to not fail when sys.stdin is not a valid file.
..
.. bpo: 21515
.. date: 8607
.. nonce: D9TLJF
.. section: Library
tempfile.TemporaryFile now uses os.O_TMPFILE flag is available.
..
.. bpo: 13223
.. date: 8606
.. nonce: 9AzEbN
.. section: Library
Fix pydoc.writedoc so that the HTML documentation for methods that use
'self' in the example code is generated correctly.
..
.. bpo: 21463
.. date: 8605
.. nonce: 09PsgH
.. section: Library
In urllib.request, fix pruning of the FTP cache.
..
.. bpo: 21618
.. date: 8604
.. nonce: 3Z7WS3
.. section: Library
The subprocess module could fail to close open fds that were inherited by
the calling process and already higher than POSIX resource limits would
otherwise allow.  On systems with a functioning /proc/self/fd or /dev/fd
interface the max is now ignored and all fds are closed.
..
.. bpo: 20383
.. date: 8603
.. nonce: pSPFpW
.. section: Library
Introduce importlib.util.module_from_spec() as the preferred way to create a
new module.
..
.. bpo: 21552
.. date: 8602
.. nonce: uVy4tM
.. section: Library
Fixed possible integer overflow of too long string lengths in the tkinter
module on 64-bit platforms.
..
.. bpo: 14315
.. date: 8601
.. nonce: YzZzS8
.. section: Library
The zipfile module now ignores extra fields in the central directory that
are too short to be parsed instead of letting a struct.unpack error bubble
up as this "bad data" appears in many real world zip files in the wild and
is ignored by other zip tools.
..
.. bpo: 13742
.. date: 8600
.. nonce: QJiVSC
.. section: Library
Added "key" and "reverse" parameters to heapq.merge(). (First draft of patch
contributed by Simon Sapin.)
..
.. bpo: 21402
.. date: 8599
.. nonce: 51vDXt
.. section: Library
tkinter.ttk now works when default root window is not set.
..
.. bpo: 3015
.. date: 8598
.. nonce: FE_PII
.. section: Library
``_tkinter.create()`` now creates ``tkapp`` object with ``wantobjects=1`` by
default.
..
.. bpo: 10203
.. date: 8597
.. nonce: zgr0hh
.. section: Library
sqlite3.Row now truly supports sequence protocol.  In particular it supports
reverse() and negative indices.  Original patch by Claudiu Popa.
..
.. bpo: 18807
.. date: 8596
.. nonce: XP7p8B
.. section: Library
If copying (no symlinks) specified for a venv, then the python interpreter
aliases (python, python3) are now created by copying rather than symlinking.
..
.. bpo: 20197
.. date: 8595
.. nonce: nYR9fq
.. section: Library
Added support for the WebP image type in the imghdr module. Patch by Fabrice
Aneche and Claudiu Popa.
..
.. bpo: 21513
.. date: 8594
.. nonce: ro4AOe
.. section: Library
Speedup some properties of IP addresses (IPv4Address, IPv6Address) such as
.is_private or .is_multicast.
..
.. bpo: 21137
.. date: 8593
.. nonce: wgHb_F
.. section: Library
Improve the repr for threading.Lock() and its variants by showing the
"locked" or "unlocked" status.  Patch by Berker Peksag.
..
.. bpo: 21538
.. date: 8592
.. nonce: Q60FWA
.. section: Library
The plistlib module now supports loading of binary plist files when
reference or offset size is not a power of two.
..
.. bpo: 21455
.. date: 8591
.. nonce: 6-Uvv4
.. section: Library
Add a default backlog to socket.listen().
..
.. bpo: 21525
.. date: 8590
.. nonce: hAKOve
.. section: Library
Most Tkinter methods which accepted tuples now accept lists too.
..
.. bpo: 22166
.. date: 8589
.. nonce: sZYhmv
.. section: Library
With the assistance of a new internal _codecs._forget_codec helping
function, test_codecs now clears the encoding caches to avoid the appearance
of a reference leak
..
.. bpo: 22236
.. date: 8588
.. nonce: ginJSI
.. section: Library
Tkinter tests now don't reuse default root window.  New root window is
created for every test class.
..
.. bpo: 10744
.. date: 8587
.. nonce: kfV0wm
.. section: Library
Fix :pep:`3118` format strings on ctypes objects with a nontrivial shape.
..
.. bpo: 20826
.. date: 8586
.. nonce: 3rXqMC
.. section: Library
Optimize ipaddress.collapse_addresses().
..
.. bpo: 21487
.. date: 8585
.. nonce: sX8YmK
.. section: Library
Optimize ipaddress.summarize_address_range() and
ipaddress.{IPv4Network,IPv6Network}.subnets().
..
.. bpo: 21486
.. date: 8584
.. nonce: CeFKRP
.. section: Library
Optimize parsing of netmasks in ipaddress.IPv4Network and
ipaddress.IPv6Network.
..
.. bpo: 13916
.. date: 8583
.. nonce: D77YVH
.. section: Library
Disallowed the surrogatepass error handler for non UTF-\* encodings.
..
.. bpo: 20998
.. date: 8582
.. nonce: fkxpXI
.. section: Library
Fixed re.fullmatch() of repeated single character pattern with ignore case.
Original patch by Matthew Barnett.
..
.. bpo: 21075
.. date: 8581
.. nonce: f_hmEh
.. section: Library
fileinput.FileInput now reads bytes from standard stream if binary mode is
specified.  Patch by Sam Kimbrel.
..
.. bpo: 19775
.. date: 8580
.. nonce: yxxD_R
.. section: Library
Add a samefile() method to pathlib Path objects.  Initial patch by Vajrasky
Kok.
..
.. bpo: 21226
.. date: 8579
.. nonce: pzGmG1
.. section: Library
Set up modules properly in PyImport_ExecCodeModuleObject (and friends).
..
.. bpo: 21398
.. date: 8578
.. nonce: guSBXt
.. section: Library
Fix a unicode error in the pydoc pager when the documentation contains
characters not encodable to the stdout encoding.
..
.. bpo: 16531
.. date: 8577
.. nonce: AhrY_v
.. section: Library
ipaddress.IPv4Network and ipaddress.IPv6Network now accept an (address,
netmask) tuple argument, so as to easily construct network objects from
existing addresses.
..
.. bpo: 21156
.. date: 8576
.. nonce: 3dmBEp
.. section: Library
importlib.abc.InspectLoader.source_to_code() is now a staticmethod.
..
.. bpo: 21424
.. date: 8575
.. nonce: 8CJBqW
.. section: Library
Simplified and optimized heaqp.nlargest() and nmsmallest() to make fewer
tuple comparisons.
..
.. bpo: 21396
.. date: 8574
.. nonce: cqO6DN
.. section: Library
Fix TextIOWrapper(..., write_through=True) to not force a flush() on the
underlying binary stream.  Patch by akira.
..
.. bpo: 18314
.. date: 8573
.. nonce: NCd_KF
.. section: Library
Unlink now removes junctions on Windows. Patch by Kim Gräsman
..
.. bpo: 21088
.. date: 8572
.. nonce: WOg7Xy
.. section: Library
Bugfix for curses.window.addch() regression in 3.4.0. In porting to Argument
Clinic, the first two arguments were reversed.
..
.. bpo: 21407
.. date: 8571
.. nonce: cZjFde
.. section: Library
_decimal: The module now supports function signatures.
..
.. bpo: 10650
.. date: 8570
.. nonce: HYT4Oe
.. section: Library
Remove the non-standard 'watchexp' parameter from the Decimal.quantize()
method in the Python version.  It had never been present in the C version.
..
.. bpo: 21469
.. date: 8569
.. nonce: _fFGuq
.. section: Library
Reduced the risk of false positives in robotparser by checking to make sure
that robots.txt has been read or does not exist prior to returning True in
can_fetch().
..
.. bpo: 19414
.. date: 8568
.. nonce: bAAw4D
.. section: Library
Have the OrderedDict mark deleted links as unusable. This gives an early
failure if the link is deleted during iteration.
..
.. bpo: 21421
.. date: 8567
.. nonce: 5AKAat
.. section: Library
Add __slots__ to the MappingViews ABC. Patch by Josh Rosenberg.
..
.. bpo: 21101
.. date: 8566
.. nonce: Lj-_P4
.. section: Library
Eliminate double hashing in the C speed-up code for collections.Counter().
..
.. bpo: 21321
.. date: 8565
.. nonce: wUkTON
.. section: Library
itertools.islice() now releases the reference to the source iterator when
the slice is exhausted.  Patch by Anton Afanasyev.
..
.. bpo: 21057
.. date: 8564
.. nonce: 0TC4Xl
.. section: Library
TextIOWrapper now allows the underlying binary stream's read() or read1()
method to return an arbitrary bytes-like object (such as a memoryview).
Patch by Nikolaus Rath.
..
.. bpo: 20951
.. date: 8563
.. nonce: tF0dJi
.. section: Library
SSLSocket.send() now raises either SSLWantReadError or SSLWantWriteError on
a non-blocking socket if the operation would block. Previously, it would
return 0.  Patch by Nikolaus Rath.
..
.. bpo: 13248
.. date: 8562
.. nonce: 7vtGj0
.. section: Library
removed previously deprecated asyncore.dispatcher __getattr__ cheap
inheritance hack.
..
.. bpo: 9815
.. date: 8561
.. nonce: 52FPlI
.. section: Library
assertRaises now tries to clear references to local variables in the
exception's traceback.
..
.. bpo: 19940
.. date: 8560
.. nonce: 2qtBQ8
.. section: Library
ssl.cert_time_to_seconds() now interprets the given time string in the UTC
timezone (as specified in RFC 5280), not the local timezone.
..
.. bpo: 13204
.. date: 8559
.. nonce: ZPKA5g
.. section: Library
Calling sys.flags.__new__ would crash the interpreter, now it raises a
TypeError.
..
.. bpo: 19385
.. date: 8558
.. nonce: PexO_g
.. section: Library
Make operations on a closed dbm.dumb database always raise the same
exception.
..
.. bpo: 21207
.. date: 8557
.. nonce: Hr72AB
.. section: Library
Detect when the os.urandom cached fd has been closed or replaced, and open
it anew.
..
.. bpo: 21291
.. date: 8556
.. nonce: 5sSLWN
.. section: Library
subprocess's Popen.wait() is now thread safe so that multiple threads may be
calling wait() or poll() on a Popen instance at the same time without losing
the Popen.returncode value.
..
.. bpo: 21127
.. date: 8555
.. nonce: A1aBjG
.. section: Library
Path objects can now be instantiated from str subclass instances (such as
``numpy.str_``).
..
.. bpo: 15002
.. date: 8554
.. nonce: qorYDe
.. section: Library
urllib.response object to use _TemporaryFileWrapper (and
_TemporaryFileCloser) facility. Provides a better way to handle file
descriptor close. Patch contributed by Christian Theune.
..
.. bpo: 12220
.. date: 8553
.. nonce: U25uE9
.. section: Library
mindom now raises a custom ValueError indicating it doesn't support spaces
in URIs instead of letting a 'split' ValueError bubble up.
..
.. bpo: 21068
.. date: 8552
.. nonce: 9k6N9m
.. section: Library
The ssl.PROTOCOL* constants are now enum members.
..
.. bpo: 21276
.. date: 8551
.. nonce: JkfhvQ
.. section: Library
posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd.
..
.. bpo: 21262
.. date: 8550
.. nonce: 1J5ylk
.. section: Library
New method assert_not_called for Mock. It raises AssertionError if the mock
has been called.
..
.. bpo: 21238
.. date: 8549
.. nonce: 5CDoox
.. section: Library
New keyword argument ``unsafe`` to Mock. It raises ``AttributeError`` in case of
an attribute startswith assert or assret.
..
.. bpo: 20896
.. date: 8548
.. nonce: oWwAb1
.. section: Library
ssl.get_server_certificate() now uses PROTOCOL_SSLv23, not PROTOCOL_SSLv3,
for maximum compatibility.
..
.. bpo: 21239
.. date: 8547
.. nonce: EalCNt
.. section: Library
patch.stopall() didn't work deterministically when the same name was patched
more than once.
..
.. bpo: 21203
.. date: 8546
.. nonce: 1IMs-Z
.. section: Library
Updated fileConfig and dictConfig to remove inconsistencies. Thanks to Jure
Koren for the patch.
..
.. bpo: 21222
.. date: 8545
.. nonce: G6MQBP
.. section: Library
Passing name keyword argument to mock.create_autospec now works.
..
.. bpo: 21197
.. date: 8544
.. nonce: Gzfqdl
.. section: Library
Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX.
..
.. bpo: 17498
.. date: 8543
.. nonce: LR9xyb
.. section: Library
Some SMTP servers disconnect after certain errors, violating strict RFC
conformance.  Instead of losing the error code when we issue the subsequent
RSET, smtplib now returns the error code and defers raising the
SMTPServerDisconnected error until the next command is issued.
..
.. bpo: 17826
.. date: 8542
.. nonce: z0zMRV
.. section: Library
setting an iterable side_effect on a mock function created by
create_autospec now works. Patch by Kushal Das.
..
.. bpo: 7776
.. date: 8541
.. nonce: K5S2Pe
.. section: Library
Fix ``Host:`` header and reconnection when using
http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath.
..
.. bpo: 20968
.. date: 8540
.. nonce: 53Aagz
.. section: Library
unittest.mock.MagicMock now supports division. Patch by Johannes Baiter.
..
.. bpo: 21529
.. date: 8539
.. nonce: 57R_Fc
.. section: Library
Fix arbitrary memory access in JSONDecoder.raw_decode with a negative second
parameter. Bug reported by Guido Vranken. (See also: :cve:`2014-4616`)
..
.. bpo: 21169
.. date: 8538
.. nonce: KE7B0M
.. section: Library
getpass now handles non-ascii characters that the input stream encoding
cannot encode by re-encoding using the replace error handler.
..
.. bpo: 21171
.. date: 8537
.. nonce: iUbV9S
.. section: Library
Fixed undocumented filter API of the rot13 codec. Patch by Berker Peksag.
..
.. bpo: 20539
.. date: 8536
.. nonce: 62nbEb
.. section: Library
Improved math.factorial error message for large positive inputs and changed
exception type (OverflowError -> ValueError) for large negative inputs.
..
.. bpo: 21172
.. date: 8535
.. nonce: dQ7yY7
.. section: Library
isinstance check relaxed from dict to collections.Mapping.
..
.. bpo: 21155
.. date: 8534
.. nonce: JSKEE7
.. section: Library
asyncio.EventLoop.create_unix_server() now raises a ValueError if path and
sock are specified at the same time.
..
.. bpo: 21136
.. date: 8533
.. nonce: JZAKv3
.. section: Library
Avoid unnecessary normalization of Fractions resulting from power and other
operations.  Patch by Raymond Hettinger.
..
.. bpo: 17621
.. date: 8532
.. nonce: 1x0mvJ
.. section: Library
Introduce importlib.util.LazyLoader.
..
.. bpo: 21076
.. date: 8531
.. nonce: upxQc6
.. section: Library
signal module constants were turned into enums. Patch by Giampaolo Rodola'.
..
.. bpo: 20636
.. date: 8530
.. nonce: KGh-BD
.. section: Library
Improved the repr of Tkinter widgets.
..
.. bpo: 19505
.. date: 8529
.. nonce: VEtIE6
.. section: Library
The items, keys, and values views of OrderedDict now support reverse
iteration using reversed().
..
.. bpo: 21149
.. date: 8528
.. nonce: cnjwMR
.. section: Library
Improved thread-safety in logging cleanup during interpreter shutdown.
Thanks to Devin Jeanpierre for the patch.
..
.. bpo: 21058
.. date: 8527
.. nonce: IhluPP
.. section: Library
Fix a leak of file descriptor in :func:`tempfile.NamedTemporaryFile`, close
the file descriptor if :func:`io.open` fails
..
.. bpo: 21200
.. date: 8526
.. nonce: Kht8yD
.. section: Library
Return None from pkgutil.get_loader() when __spec__ is missing.
..
.. bpo: 21013
.. date: 8525
.. nonce: 3s8Ic0
.. section: Library
Enhance ssl.create_default_context() when used for server side sockets to
provide better security by default.
..
.. bpo: 20145
.. date: 8524
.. nonce: FP5FY0
.. section: Library
``assertRaisesRegex`` and ``assertWarnsRegex`` now raise a ``TypeError`` if the
second argument is not a string or compiled regex.
..
.. bpo: 20633
.. date: 8523
.. nonce: 6kaPjT
.. section: Library
Replace relative import by absolute import.
..
.. bpo: 20980
.. date: 8522
.. nonce: cYszHY
.. section: Library
Stop wrapping exception when using ThreadPool.
..
.. bpo: 21082
.. date: 8521
.. nonce: GLzGlV
.. section: Library
In os.makedirs, do not set the process-wide umask. Note this changes
behavior of makedirs when exist_ok=True.
..
.. bpo: 20990
.. date: 8520
.. nonce: PBfjW3
.. section: Library
Fix issues found by pyflakes for multiprocessing.
..
.. bpo: 21015
.. date: 8519
.. nonce: xnwWAH
.. section: Library
SSL contexts will now automatically select an elliptic curve for ECDH key
exchange on OpenSSL 1.0.2 and later, and otherwise default to "prime256v1".
..
.. bpo: 21000
.. date: 8518
.. nonce: JUyyVV
.. section: Library
Improve the command-line interface of json.tool.
..
.. bpo: 20995
.. date: 8517
.. nonce: KSORJT
.. section: Library
Enhance default ciphers used by the ssl module to enable better security and
prioritize perfect forward secrecy.
..
.. bpo: 20884
.. date: 8516
.. nonce: qNmub_
.. section: Library
Don't assume that __file__ is defined on importlib.__init__.
..
.. bpo: 21499
.. date: 8515
.. nonce: wU4OBi
.. section: Library
Ignore __builtins__ in several test_importlib.test_api tests.
..
.. bpo: 20627
.. date: 8514
.. nonce: fgfQ1x
.. section: Library
xmlrpc.client.ServerProxy is now a context manager.
..
.. bpo: 19165
.. date: 8513
.. nonce: sAkUjU
.. section: Library
The formatter module now raises DeprecationWarning instead of
PendingDeprecationWarning.
..
.. bpo: 13936
.. date: 8512
.. nonce: _Q0Yog
.. section: Library
Remove the ability of datetime.time instances to be considered false in
boolean contexts.
..
.. bpo: 18931
.. date: 8511
.. nonce: mq4Mud
.. section: Library
selectors module now supports /dev/poll on Solaris. Patch by Giampaolo
Rodola'.
..
.. bpo: 19977
.. date: 8510
.. nonce: A-sQ_V
.. section: Library
When the ``LC_TYPE`` locale is the POSIX locale (``C`` locale),
:py:data:`sys.stdin` and :py:data:`sys.stdout` are now using the
``surrogateescape`` error handler, instead of the ``strict`` error handler.
..
.. bpo: 20574
.. date: 8509
.. nonce: KaKqSs
.. section: Library
Implement incremental decoder for cp65001 code (Windows code page 65001,
Microsoft UTF-8).
..
.. bpo: 20879
.. date: 8508
.. nonce: myeYdq
.. section: Library
Delay the initialization of encoding and decoding tables for base32, ascii85
and base85 codecs in the base64 module, and delay the initialization of the
unquote_to_bytes() table of the urllib.parse module, to not waste memory if
these modules are not used.
..
.. bpo: 19157
.. date: 8507
.. nonce: V1-XhC
.. section: Library
Include the broadcast address in the usable hosts for IPv6 in ipaddress.
..
.. bpo: 11599
.. date: 8506
.. nonce: 9QOXf4
.. section: Library
When an external command (e.g. compiler) fails, distutils now prints out the
whole command line (instead of just the command name) if the environment
variable DISTUTILS_DEBUG is set.
..
.. bpo: 4931
.. date: 8505
.. nonce: uF10hr
.. section: Library
distutils should not produce unhelpful "error: None" messages anymore.
distutils.util.grok_environment_error is kept but doc-deprecated.
..
.. bpo: 20875
.. date: 8504
.. nonce: IjfI5V
.. section: Library
Prevent possible gzip "'read' is not defined" NameError. Patch by Claudiu
Popa.
..
.. bpo: 11558
.. date: 8503
.. nonce: pxrsmq
.. section: Library
``email.message.Message.attach`` now returns a more useful error message if
``attach`` is called on a message for which ``is_multipart`` is False.
..
.. bpo: 20283
.. date: 8502
.. nonce: v0Vs9V
.. section: Library
RE pattern methods now accept the string keyword parameters as documented.
The pattern and source keyword parameters are left as deprecated aliases.
..
.. bpo: 20778
.. date: 8501
.. nonce: g_fAGI
.. section: Library
Fix modulefinder to work with bytecode-only modules.
..
.. bpo: 20791
.. date: 8500
.. nonce: n_zrkc
.. section: Library
copy.copy() now doesn't make a copy when the input is a bytes object.
Initial patch by Peter Otten.
..
.. bpo: 19748
.. date: 8499
.. nonce: kiA171
.. section: Library
On AIX, time.mktime() now raises an OverflowError for year outsize range
[1902; 2037].
..
.. bpo: 19573
.. date: 8498
.. nonce: QJvX_V
.. section: Library
inspect.signature: Use enum for parameter kind constants.
..
.. bpo: 20726
.. date: 8497
.. nonce: 0yfRDI
.. section: Library
inspect.signature: Make Signature and Parameter picklable.
..
.. bpo: 17373
.. date: 8496
.. nonce: ECwuJO
.. section: Library
Add inspect.Signature.from_callable method.
..
.. bpo: 20378
.. date: 8495
.. nonce: l9M3H-
.. section: Library
Improve repr of inspect.Signature and inspect.Parameter.
..
.. bpo: 20816
.. date: 8494
.. nonce: DFMEgN
.. section: Library
Fix inspect.getcallargs() to raise correct TypeError for missing
keyword-only arguments. Patch by Jeremiah Lowin.
..
.. bpo: 20817
.. date: 8493
.. nonce: O5XyZB
.. section: Library
Fix inspect.getcallargs() to fail correctly if more than 3 arguments are
missing. Patch by Jeremiah Lowin.
..
.. bpo: 6676
.. date: 8492
.. nonce: CJu5On
.. section: Library
Ensure a meaningful exception is raised when attempting to parse more than
one XML document per pyexpat xmlparser instance. (Original patches by
Hirokazu Yamamoto and Amaury Forgeot d'Arc, with suggested wording by David
Gutteridge)
..
.. bpo: 21117
.. date: 8491
.. nonce: hyH7EK
.. section: Library
Fix inspect.signature to better support functools.partial. Due to the
specifics of functools.partial implementation, positional-or-keyword
arguments passed as keyword arguments become keyword-only.
..
.. bpo: 20334
.. date: 8490
.. nonce: 0yFmfQ
.. section: Library
inspect.Signature and inspect.Parameter are now hashable. Thanks to Antony
Lee for bug reports and suggestions.
..
.. bpo: 15916
.. date: 8489
.. nonce: _vhKPn
.. section: Library
doctest.DocTestSuite returns an empty unittest.TestSuite instead of raising
ValueError if it finds no tests
..
.. bpo: 21209
.. date: 8488
.. nonce: wRE7Dn
.. section: Library
Fix asyncio.tasks.CoroWrapper to workaround a bug in yield-from
implementation in CPythons prior to 3.4.1.
..
.. bpo: 0
.. date: 8487
.. nonce: Q1I78Z
.. section: Library
asyncio: Add gi_{frame,running,code} properties to CoroWrapper (upstream
issue #163).
..
.. bpo: 21311
.. date: 8486
.. nonce: JsDF8H
.. section: Library
Avoid exception in _osx_support with non-standard compiler configurations.
Patch by John Szakmeister.
..
.. bpo: 11571
.. date: 8485
.. nonce: RPeGNo
.. section: Library
Ensure that the turtle window becomes the topmost window when launched on OS
X.
..
.. bpo: 21801
.. date: 8484
.. nonce: rzfhYl
.. section: Library
Validate that __signature__ is None or an instance of Signature.
..
.. bpo: 21923
.. date: 8483
.. nonce: hXnoZa
.. section: Library
Prevent AttributeError in distutils.sysconfig.customize_compiler due to
possible uninitialized _config_vars.
..
.. bpo: 21323
.. date: 8482
.. nonce: quiWfl
.. section: Library
Fix http.server to again handle scripts in CGI subdirectories, broken by the
fix for security issue #19435.  Patch by Zach Byrne.
..
.. bpo: 22733
.. date: 8481
.. nonce: 21gJBp
.. section: Library
Fix ffi_prep_args not zero-extending argument values correctly on 64-bit
Windows.
..
.. bpo: 23302
.. date: 8480
.. nonce: X2dabK
.. section: Library
Default to TCP_NODELAY=1 upon establishing an HTTPConnection. Removed use of
hard-coded MSS as it's an optimization that's no longer needed with Nagle
disabled.
..
.. bpo: 20577
.. date: 8479
.. nonce: Y71IMj
.. section: IDLE
Configuration of the max line length for the FormatParagraph extension has
been moved from the General tab of the Idle preferences dialog to the
FormatParagraph tab of the Config Extensions dialog. Patch by Tal Einat.
..
.. bpo: 16893
.. date: 8478
.. nonce: JfHAA4
.. section: IDLE
Update Idle doc chapter to match current Idle and add new information.
..
.. bpo: 3068
.. date: 8477
.. nonce: TYjXTA
.. section: IDLE
Add Idle extension configuration dialog to Options menu. Changes are written
to HOME/.idlerc/config-extensions.cfg. Original patch by Tal Einat.
..
.. bpo: 16233
.. date: 8476
.. nonce: sOadNo
.. section: IDLE
A module browser (File : Class Browser, Alt+C) requires an editor window
with a filename.  When Class Browser is requested otherwise, from a shell,
output window, or 'Untitled' editor, Idle no longer displays an error box.
It now pops up an Open Module box (Alt+M). If a valid name is entered and a
module is opened, a corresponding browser is also opened.
..
.. bpo: 4832
.. date: 8475
.. nonce: GRKi9M
.. section: IDLE
Save As to type Python files automatically adds .py to the name you enter
(even if your system does not display it).  Some systems automatically add
.txt when type is Text files.
..
.. bpo: 21986
.. date: 8474
.. nonce: 04GUv2
.. section: IDLE
Code objects are not normally pickled by the pickle module. To match this,
they are no longer pickled when running under Idle.
..
.. bpo: 17390
.. date: 8473
.. nonce: I4vHFh
.. section: IDLE
Adjust Editor window title; remove 'Python', move version to end.
..
.. bpo: 14105
.. date: 8472
.. nonce: -FZwYH
.. section: IDLE
Idle debugger breakpoints no longer disappear when inserting or deleting
lines.
..
.. bpo: 17172
.. date: 8471
.. nonce: R8jkU1
.. section: IDLE
Turtledemo can now be run from Idle. Currently, the entry is on the Help
menu, but it may move to Run. Patch by Ramchandra Apt and Lita Cho.
..
.. bpo: 21765
.. date: 8470
.. nonce: JyiDbd
.. section: IDLE
Add support for non-ascii identifiers to HyperParser.
..
.. bpo: 21940
.. date: 8469
.. nonce: VlIRz7
.. section: IDLE
Add unittest for WidgetRedirector. Initial patch by Saimadhav Heblikar.
..
.. bpo: 18592
.. date: 8468
.. nonce: sMG-SZ
.. section: IDLE
Add unittest for SearchDialogBase. Patch by Phil Webster.
..
.. bpo: 21694
.. date: 8467
.. nonce: 1oLmRo
.. section: IDLE
Add unittest for ParenMatch. Patch by Saimadhav Heblikar.
..
.. bpo: 21686
.. date: 8466
.. nonce: TAkFB0
.. section: IDLE
add unittest for HyperParser. Original patch by Saimadhav Heblikar.
..
.. bpo: 12387
.. date: 8465
.. nonce: XO7Ozk
.. section: IDLE
Add missing upper(lower)case versions of default Windows key bindings for
Idle so Caps Lock does not disable them. Patch by Roger Serwy.
..
.. bpo: 21695
.. date: 8464
.. nonce: g-t0Tm
.. section: IDLE
Closing a Find-in-files output window while the search is still in progress
no longer closes Idle.
..
.. bpo: 18910
.. date: 8463
.. nonce: ke8lMK
.. section: IDLE
Add unittest for textView. Patch by Phil Webster.
..
.. bpo: 18292
.. date: 8462
.. nonce: ks_3wm
.. section: IDLE
Add unittest for AutoExpand. Patch by Saihadhav Heblikar.
..
.. bpo: 18409
.. date: 8461
.. nonce: 7fe-aK
.. section: IDLE
Add unittest for AutoComplete. Patch by Phil Webster.
..
.. bpo: 21477
.. date: 8460
.. nonce: 33NOe0
.. section: IDLE
htest.py - Improve framework, complete set of tests. Patches by Saimadhav
Heblikar
..
.. bpo: 18104
.. date: 8459
.. nonce: 8Fj9Pf
.. section: IDLE
Add idlelib/idle_test/htest.py with a few sample tests to begin
consolidating and improving human-validated tests of Idle. Change other
files as needed to work with htest.  Running the module as __main__ runs all
tests.
..
.. bpo: 21139
.. date: 8458
.. nonce: kqetng
.. section: IDLE
Change default paragraph width to 72, the :pep:`8` recommendation.
..
.. bpo: 21284
.. date: 8457
.. nonce: KKJfmv
.. section: IDLE
Paragraph reformat test passes after user changes reformat width.
..
.. bpo: 17654
.. date: 8456
.. nonce: NbzhNS
.. section: IDLE
Ensure IDLE menus are customized properly on OS X for non-framework builds
and for all variants of Tk.
..
.. bpo: 23180
.. date: 8455
.. nonce: cE_89F
.. section: IDLE
Rename IDLE "Windows" menu item to "Window". Patch by Al Sweigart.
..
.. bpo: 15506
.. date: 8454
.. nonce: nh8KlR
.. section: Build
Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure script.
..
.. bpo: 22935
.. date: 8453
.. nonce: -vY3lc
.. section: Build
Allow the ssl module to be compiled if openssl doesn't support SSL 3.
..
.. bpo: 22592
.. date: 8452
.. nonce: O_IE9W
.. section: Build
Drop support of the Borland C compiler to build Python. The distutils module
still supports it to build extensions.
..
.. bpo: 22591
.. date: 8451
.. nonce: wwBlG8
.. section: Build
Drop support of MS-DOS, especially of the DJGPP compiler (MS-DOS port of
GCC).
..
.. bpo: 16537
.. date: 8450
.. nonce: llFo71
.. section: Build
Check whether self.extensions is empty in setup.py. Patch by Jonathan
Hosmer.
..
.. bpo: 22359
.. date: 8449
.. nonce: YYFOFG
.. section: Build
Remove incorrect uses of recursive make.  Patch by Jonas Wagner.
..
.. bpo: 21958
.. date: 8448
.. nonce: 3rq4qR
.. section: Build
Define HAVE_ROUND when building with Visual Studio 2013 and above.  Patch by
Zachary Turner.
..
.. bpo: 18093
.. date: 8447
.. nonce: gnZieo
.. section: Build
the programs that embed the CPython runtime are now in a separate "Programs"
directory, rather than being kept in the Modules directory.
..
.. bpo: 15759
.. date: 8446
.. nonce: iGLR6O
.. section: Build
"make suspicious", "make linkcheck" and "make doctest" in Doc/ now display
special message when and only when there are failures.
..
.. bpo: 21141
.. date: 8445
.. nonce: 669LzK
.. section: Build
The Windows build process no longer attempts to find Perl, instead relying
on OpenSSL source being configured and ready to build.  The
``PCbuild\build_ssl.py`` script has been re-written and re-named to
``PCbuild\prepare_ssl.py``, and takes care of configuring OpenSSL source for
both 32 and 64 bit platforms.  OpenSSL sources obtained from svn.python.org
will always be pre-configured and ready to build.
..
.. bpo: 21037
.. date: 8444
.. nonce: v1rZzo
.. section: Build
Add a build option to enable AddressSanitizer support.
..
.. bpo: 19962
.. date: 8443
.. nonce: HDlwsE
.. section: Build
The Windows build process now creates "python.bat" in the root of the source
tree, which passes all arguments through to the most recently built
interpreter.
..
.. bpo: 21285
.. date: 8442
.. nonce: cU9p2E
.. section: Build
Refactor and fix curses configure check to always search in a ncursesw
directory.
..
.. bpo: 15234
.. date: 8441
.. nonce: vlM720
.. section: Build
For BerkeleyDB and Sqlite, only add the found library and include directories
if they aren't already being searched. This avoids an explicit runtime
library dependency.
..
.. bpo: 17861
.. date: 8440
.. nonce: jCi44U
.. section: Build
Tools/scripts/generate_opcode_h.py automatically regenerates
Include/opcode.h from Lib/opcode.py if the latter gets any change.
..
.. bpo: 20644
.. date: 8439
.. nonce: aV0zq7
.. section: Build
OS X installer build support for documentation build changes in 3.4.1:
assume externally supplied sphinx-build is available in /usr/bin.
..
.. bpo: 20022
.. date: 8438
.. nonce: EqSCTW
.. section: Build
Eliminate use of deprecated bundlebuilder in OS X builds.
..
.. bpo: 15968
.. date: 8437
.. nonce: vxUxHK
.. section: Build
Incorporated Tcl, Tk, and Tix builds into the Windows build solution.
..
.. bpo: 17095
.. date: 8436
.. nonce: -XEBIU
.. section: Build
Fix Modules/Setup *shared* support.
..
.. bpo: 21811
.. date: 8435
.. nonce: 3_Xyr-
.. section: Build
Anticipated fixes to support OS X versions > 10.9.
..
.. bpo: 21166
.. date: 8434
.. nonce: KAl7aO
.. section: Build
Prevent possible segfaults and other random failures of python
--generate-posix-vars in pybuilddir.txt build target.
..
.. bpo: 18096
.. date: 8433
.. nonce: ELyAUJ
.. section: Build
Fix library order returned by python-config.
..
.. bpo: 17219
.. date: 8432
.. nonce: q8ueQ0
.. section: Build
Add library build dir for Python extension cross-builds.
..
.. bpo: 22919
.. date: 8431
.. nonce: 1XThL9
.. section: Build
Windows build updated to support VC 14.0 (Visual Studio 2015), which will be
used for the official release.
..
.. bpo: 21236
.. date: 8430
.. nonce: 84LXxj
.. section: Build
Build _msi.pyd with cabinet.lib instead of fci.lib
..
.. bpo: 17128
.. date: 8429
.. nonce: U2biLA
.. section: Build
Use private version of OpenSSL for OS X 10.5+ installer.
..
.. bpo: 14203
.. date: 8428
.. nonce: 3hv0TX
.. section: C API
Remove obsolete support for view==NULL in PyBuffer_FillInfo(),
bytearray_getbuffer(), bytesiobuf_getbuffer() and array_buffer_getbuf(). All
functions now raise BufferError in that case.
..
.. bpo: 22445
.. date: 8427
.. nonce: s0AOAS
.. section: C API
PyBuffer_IsContiguous() now implements precise contiguity tests, compatible
with NumPy's NPY_RELAXED_STRIDES_CHECKING compilation flag.  Previously the
function reported false negatives for corner cases.
..
.. bpo: 22079
.. date: 8426
.. nonce: zhs2qM
.. section: C API
PyType_Ready() now checks that statically allocated type has no dynamically
allocated bases.
..
.. bpo: 22453
.. date: 8425
.. nonce: XoO4ns
.. section: C API
Removed non-documented macro PyObject_REPR().
..
.. bpo: 18395
.. date: 8424
.. nonce: YC9B06
.. section: C API
Rename ``_Py_char2wchar()`` to :c:func:`Py_DecodeLocale`, rename
``_Py_wchar2char()`` to :c:func:`Py_EncodeLocale`, and document these
functions.
..
.. bpo: 21233
.. date: 8423
.. nonce: 98hZAt
.. section: C API
Add new C functions: PyMem_RawCalloc(), PyMem_Calloc(), PyObject_Calloc(),
_PyObject_GC_Calloc(). bytes(int) is now using ``calloc()`` instead of
``malloc()`` for large objects which is faster and use less memory.
..
.. bpo: 20942
.. date: 8422
.. nonce: qHLJ5-
.. section: C API
PyImport_ImportFrozenModuleObject() no longer sets __file__ to match what
importlib does; this affects _frozen_importlib as well as any module loaded
using imp.init_frozen().
..
.. bpo: 19548
.. date: 8421
.. nonce: yOX8sS
.. section: Documentation
Update the codecs module documentation to better cover the distinction
between text encodings and other codecs, together with other clarifications.
Patch by Martin Panter.
..
.. bpo: 22394
.. date: 8420
.. nonce: 6bJywY
.. section: Documentation
Doc/Makefile now supports ``make venv PYTHON=../python`` to create a venv
for generating the documentation, e.g., ``make html
PYTHON=venv/bin/python3``.
..
.. bpo: 21514
.. date: 8419
.. nonce: 1H16T6
.. section: Documentation
The documentation of the json module now refers to new JSON RFC 7159 instead
of obsoleted RFC 4627.
..
.. bpo: 21777
.. date: 8418
.. nonce: dtQCWV
.. section: Documentation
The binary sequence methods on bytes and bytearray are now documented
explicitly, rather than assuming users will be able to derive the expected
behaviour from the behaviour of the corresponding str methods.
..
.. bpo: 6916
.. date: 8417
.. nonce: 4sm3nE
.. section: Documentation
undocument deprecated asynchat.fifo class.
..
.. bpo: 17386
.. date: 8416
.. nonce: ivaGLb
.. section: Documentation
Expanded functionality of the ``Doc/make.bat`` script to make it much more
comparable to ``Doc/Makefile``.
..
.. bpo: 21312
.. date: 8415
.. nonce: 6IqcV4
.. section: Documentation
Update the thread_foobar.h template file to include newer threading APIs.
Patch by Jack McCracken.
..
.. bpo: 21043
.. date: 8414
.. nonce: oEOC8O
.. section: Documentation
Remove the recommendation for specific CA organizations and to mention the
ability to load the OS certificates.
..
.. bpo: 20765
.. date: 8413
.. nonce: Rv3GgV
.. section: Documentation
Add missing documentation for PurePath.with_name() and
PurePath.with_suffix().
..
.. bpo: 19407
.. date: 8412
.. nonce: mRyNnG
.. section: Documentation
New package installation and distribution guides based on the Python
Packaging Authority tools. Existing guides have been retained as legacy
links from the distutils docs, as they still contain some required reference
material for tool developers that isn't recorded anywhere else.
..
.. bpo: 19697
.. date: 8411
.. nonce: 2jMQBP
.. section: Documentation
Document cases where __main__.__spec__ is None.
..
.. bpo: 18982
.. date: 8410
.. nonce: TynSM6
.. section: Tests
Add tests for CLI of the calendar module.
..
.. bpo: 19548
.. date: 8409
.. nonce: 25Kxq_
.. section: Tests
Added some additional checks to test_codecs to ensure that statements in the
updated documentation remain accurate. Patch by Martin Panter.
..
.. bpo: 22838
.. date: 8408
.. nonce: VZBtZg
.. section: Tests
All test_re tests now work with unittest test discovery.
..
.. bpo: 22173
.. date: 8407
.. nonce: dxIIVx
.. section: Tests
Update lib2to3 tests to use unittest test discovery.
..
.. bpo: 16000
.. date: 8406
.. nonce: Y7O6TP
.. section: Tests
Convert test_curses to use unittest.
..
.. bpo: 21456
.. date: 8405
.. nonce: Axsw43
.. section: Tests
Skip two tests in test_urllib2net.py if _ssl module not present. Patch by
Remi Pointel.
..
.. bpo: 20746
.. date: 8404
.. nonce: N2pzAY
.. section: Tests
Fix test_pdb to run in refleak mode (-R).  Patch by Xavier de Gaye.
..
.. bpo: 22060
.. date: 8403
.. nonce: TduJNO
.. section: Tests
test_ctypes has been somewhat cleaned up and simplified; it now uses
unittest test discovery to find its tests.
..
.. bpo: 22104
.. date: 8402
.. nonce: -YYDup
.. section: Tests
regrtest.py no longer holds a reference to the suite of tests loaded from
test modules that don't define test_main().
..
.. bpo: 22111
.. date: 8401
.. nonce: 0XlFAU
.. section: Tests
Assorted cleanups in test_imaplib.  Patch by Milan Oberkirch.
..
.. bpo: 22002
.. date: 8400
.. nonce: jpiaA2
.. section: Tests
Added ``load_package_tests`` function to test.support and used it to
implement/augment test discovery in test_asyncio, test_email,
test_importlib, test_json, and test_tools.
..
.. bpo: 21976
.. date: 8399
.. nonce: Slq6se
.. section: Tests
Fix test_ssl to accept LibreSSL version strings.  Thanks to William Orr.
..
.. bpo: 21918
.. date: 8398
.. nonce: QTFFSj
.. section: Tests
Converted test_tools from a module to a package containing separate test
files for each tested script.
..
.. bpo: 9554
.. date: 8397
.. nonce: VsP0Ve
.. section: Tests
Use modern unittest features in test_argparse. Initial patch by Denver
Coneybeare and Radu Voicilas.
..
.. bpo: 20155
.. date: 8396
.. nonce: nphzS3
.. section: Tests
Changed HTTP method names in failing tests in test_httpservers so that
packet filtering software (specifically Windows Base Filtering Engine) does
not interfere with the transaction semantics expected by the tests.
..
.. bpo: 19493
.. date: 8395
.. nonce: SwbzLQ
.. section: Tests
Refactored the ctypes test package to skip tests explicitly rather than
silently.
..
.. bpo: 18492
.. date: 8394
.. nonce: ylPRU7
.. section: Tests
All resources are now allowed when tests are not run by regrtest.py.
..
.. bpo: 21634
.. date: 8393
.. nonce: Eng06F
.. section: Tests
Fix pystone micro-benchmark: use floor division instead of true division to
benchmark integers instead of floating-point numbers. Set pystone version to
1.2. Patch written by Lennart Regebro.
..
.. bpo: 21605
.. date: 8392
.. nonce: qsLV8d
.. section: Tests
Added tests for Tkinter images.
..
.. bpo: 21493
.. date: 8391
.. nonce: NqhRsy
.. section: Tests
Added test for ntpath.expanduser().  Original patch by Claudiu Popa.
..
.. bpo: 19925
.. date: 8390
.. nonce: dhMx08
.. section: Tests
Added tests for the spwd module. Original patch by Vajrasky Kok.
..
.. bpo: 21522
.. date: 8389
.. nonce: b-VwFW
.. section: Tests
Added Tkinter tests for Listbox.itemconfigure(),
PanedWindow.paneconfigure(), and Menu.entryconfigure().
..
.. bpo: 17756
.. date: 8388
.. nonce: LLfbfU
.. section: Tests
Fix test_code test when run from the installed location.
..
.. bpo: 17752
.. date: 8387
.. nonce: P8iG44
.. section: Tests
Fix distutils tests when run from the installed location.
..
.. bpo: 18604
.. date: 8386
.. nonce: Q00Xrj
.. section: Tests
Consolidated checks for GUI availability.  All platforms now at least check
whether Tk can be instantiated when the GUI resource is requested.
..
.. bpo: 21275
.. date: 8385
.. nonce: lI5FkX
.. section: Tests
Fix a socket test on KFreeBSD.
..
.. bpo: 21223
.. date: 8384
.. nonce: lMY6ka
.. section: Tests
Pass test_site/test_startup_imports when some of the extensions are built as
builtins.
..
.. bpo: 20635
.. date: 8383
.. nonce: mzWmoS
.. section: Tests
Added tests for Tk geometry managers.
..
.. bpo: 0
.. date: 8382
.. nonce: E5XNqr
.. section: Tests
Add test case for freeze.
..
.. bpo: 20743
.. date: 8381
.. nonce: hxZQUf
.. section: Tests
Fix a reference leak in test_tcl.
..
.. bpo: 21097
.. date: 8380
.. nonce: gsUesm
.. section: Tests
Move test_namespace_pkgs into test_importlib.
..
.. bpo: 21503
.. date: 8379
.. nonce: H9TPCg
.. section: Tests
Use test_both() consistently in test_importlib.
..
.. bpo: 20939
.. date: 8378
.. nonce: x3KQ35
.. section: Tests
Avoid various network test failures due to new redirect of
http://www.python.org/ to https://www.python.org: use http://www.example.com
instead.
..
.. bpo: 20668
.. date: 8377
.. nonce: IWjOSC
.. section: Tests
asyncio tests no longer rely on tests.txt file. (Patch by Vajrasky Kok)
..
.. bpo: 21093
.. date: 8376
.. nonce: CcpRim
.. section: Tests
Prevent failures of ctypes test_macholib on OS X if a copy of libz exists in
$HOME/lib or /usr/local/lib.
..
.. bpo: 22770
.. date: 8375
.. nonce: FxAh91
.. section: Tests
Prevent some Tk segfaults on OS X when running gui tests.
..
.. bpo: 23211
.. date: 8374
.. nonce: Bc-QfJ
.. section: Tests
Workaround test_logging failure on some OS X 10.6 systems.
..
.. bpo: 23345
.. date: 8373
.. nonce: HIGBKx
.. section: Tests
Prevent test_ssl failures with large OpenSSL patch level values (like
0.9.8zc).
..
.. bpo: 22314
.. date: 8372
.. nonce: ws6xsH
.. section: Tools/Demos
pydoc now works when the LINES environment variable is set.
..
.. bpo: 22615
.. date: 8371
.. nonce: My3DWN
.. section: Tools/Demos
Argument Clinic now supports the "type" argument for the int converter.
This permits using the int converter with enums and typedefs.
..
.. bpo: 20076
.. date: 8370
.. nonce: ZNuBrC
.. section: Tools/Demos
The makelocalealias.py script no longer ignores UTF-8 mapping.
..
.. bpo: 20079
.. date: 8369
.. nonce: ogPXcK
.. section: Tools/Demos
The makelocalealias.py script now can parse the SUPPORTED file from glibc
sources and supports command line options for source paths.
..
.. bpo: 22201
.. date: 8368
.. nonce: k1Awbh
.. section: Tools/Demos
Command-line interface of the zipfile module now correctly extracts ZIP
files with directory entries.  Patch by Ryan Wilson.
..
.. bpo: 22120
.. date: 8367
.. nonce: KmBUj-
.. section: Tools/Demos
For functions using an unsigned integer return converter, Argument Clinic
now generates a cast to that type for the comparison to -1 in the generated
code.  (This suppresses a compilation warning.)
..
.. bpo: 18974
.. date: 8366
.. nonce: I3DdAo
.. section: Tools/Demos
Tools/scripts/diff.py now uses argparse instead of optparse.
..
.. bpo: 21906
.. date: 8365
.. nonce: ZsKy9v
.. section: Tools/Demos
Make Tools/scripts/md5sum.py work in Python 3. Patch by Zachary Ware.
..
.. bpo: 21629
.. date: 8364
.. nonce: 9kZmQl
.. section: Tools/Demos
Fix Argument Clinic's "--converters" feature.
..
.. bpo: 0
.. date: 8363
.. nonce: _-ge-g
.. section: Tools/Demos
Add support for ``yield from`` to 2to3.
..
.. bpo: 0
.. date: 8362
.. nonce: dpFbyZ
.. section: Tools/Demos
Add support for the :pep:`465` matrix multiplication operator to 2to3.
..
.. bpo: 16047
.. date: 8361
.. nonce: IsgTzm
.. section: Tools/Demos
Fix module exception list and __file__ handling in freeze. Patch by Meador
Inge.
..
.. bpo: 11824
.. date: 8360
.. nonce: OBWc3T
.. section: Tools/Demos
Consider ABI tags in freeze. Patch by Meador Inge.
..
.. bpo: 20535
.. date: 8359
.. nonce: 0qkvZZ
.. section: Tools/Demos
PYTHONWARNING no longer affects the run_tests.py script. Patch by Arfrever
Frehtes Taifersar Arahesis.
..
.. bpo: 23260
.. date: 8358
.. nonce: aZ5VLH
.. section: Windows
Update Windows installer
..
.. bpo: 0
.. date: 8357
.. nonce: _aEUNt
.. section: Windows
The bundled version of Tcl/Tk has been updated to 8.6.3.  The most visible
result of this change is the addition of new native file dialogs when
running on Windows Vista or newer.  See Tcl/Tk's TIP 432 for more
information.  Also, this version of Tcl/Tk includes support for Windows 10.
..
.. bpo: 17896
.. date: 8356
.. nonce: o79rHM
.. section: Windows
The Windows build scripts now expect external library sources to be in
``PCbuild\..\externals`` rather than ``PCbuild\..\..``.
..
.. bpo: 17717
.. date: 8355
.. nonce: y1zoye
.. section: Windows
The Windows build scripts now use a copy of NASM pulled from svn.python.org
to build OpenSSL.
..
.. bpo: 21907
.. date: 8354
.. nonce: jm1smN
.. section: Windows
Improved the batch scripts provided for building Python.
..
.. bpo: 22644
.. date: 8353
.. nonce: gosBki
.. section: Windows
The bundled version of OpenSSL has been updated to 1.0.1j.
..
.. bpo: 10747
.. date: 8352
.. nonce: LTWhLn
.. section: Windows
Use versioned labels in the Windows start menu. Patch by Olive Kilburn.
..
.. bpo: 22980
.. date: 8351
.. nonce: -UypE5
.. section: Windows
.pyd files with a version and platform tag (for example, ".cp35-win32.pyd")
will now be loaded in preference to those without tags.


"""