Misc/NEWS.d/3.12.0a5.rst - platform/external/python/cpython3 - Git at Google

 .. date: 2022-11-08-12-06-52
 .. gh-issue: 99108
 .. nonce: 4Wrsuh
 .. release date: 2023-02-07
 .. section: Security

 Replace the builtin :mod:`hashlib` implementations of SHA2-224 and SHA2-256
 originally from LibTomCrypt with formally verified, side-channel resistant
 code from the `HACL* <https://github.com/hacl-star/hacl-star/>`_ project.
 The builtins remain a fallback only used when OpenSSL does not provide them.

 ..

 .. date: 2023-02-06-20-13-36
 .. gh-issue: 92173
 .. nonce: RQE0mk
 .. section: Core and Builtins

 Fix the ``defs`` and ``kwdefs`` arguments to :c:func:`PyEval_EvalCodeEx` and
 a reference leak in that function.

 ..

 .. date: 2023-01-30-11-56-09
 .. gh-issue: 59956
 .. nonce: 7xqnC_
 .. section: Core and Builtins

 The GILState API is now partially compatible with subinterpreters.
 Previously, ``PyThreadState_GET()`` and ``PyGILState_GetThisThreadState()``
 would get out of sync, causing inconsistent behavior and crashes.

 ..

 .. date: 2023-01-30-08-59-47
 .. gh-issue: 101400
 .. nonce: Di_ZFm
 .. section: Core and Builtins

 Fix wrong lineno in exception message on :keyword:`continue` or
 :keyword:`break` which are not in a loop. Patch by Dong-hee Na.

 ..

 .. date: 2023-01-28-20-31-42
 .. gh-issue: 101372
 .. nonce: 8BcpCC
 .. section: Core and Builtins

 Fix :func:`~unicodedata.is_normalized` to properly handle the UCD 3.2.0
 cases. Patch by Dong-hee Na.

 ..

 .. date: 2023-01-28-13-11-52
 .. gh-issue: 101266
 .. nonce: AxV3OF
 .. section: Core and Builtins

 Fix :func:`sys.getsizeof` reporting for :class:`int` subclasses.

 ..

 .. date: 2023-01-24-17-13-32
 .. gh-issue: 101291
 .. nonce: Yr6u_c
 .. section: Core and Builtins

 Refactor the ``PyLongObject`` struct into a normal Python object header and
 a ``PyLongValue`` struct.

 ..

 .. date: 2023-01-15-03-26-04
 .. gh-issue: 101046
 .. nonce: g2CM4S
 .. section: Core and Builtins

 Fix a possible memory leak in the parser when raising :exc:`MemoryError`.
 Patch by Pablo Galindo

 ..

 .. date: 2023-01-14-17-03-08
 .. gh-issue: 101037
 .. nonce: 9ATNuf
 .. section: Core and Builtins

 Fix potential memory underallocation issue for instances of :class:`int`
 subclasses with value zero.

 ..

 .. date: 2023-01-13-12-56-20
 .. gh-issue: 100762
 .. nonce: YvHaQJ
 .. section: Core and Builtins

 Record the (virtual) exception block depth in the oparg of
 :opcode:`YIELD_VALUE`. Use this to avoid the expensive ``throw()`` when
 closing generators (and coroutines) that can be closed trivially.

 ..

 .. date: 2023-01-12-13-46-49
 .. gh-issue: 100982
 .. nonce: mJ234s
 .. section: Core and Builtins

 Adds a new :opcode:`COMPARE_AND_BRANCH` instruction. This is a bit more
 efficient when performing a comparison immediately followed by a branch, and
 restores the design intent of PEP 659 that specializations are local to a
 single instruction.

 ..

 .. date: 2023-01-11-22-52-19
 .. gh-issue: 100942
 .. nonce: ontOy_
 .. section: Core and Builtins

 Fixed segfault in property.getter/setter/deleter that occurred when a
 property subclass overrode the ``__new__`` method to return a non-property
 instance.

 ..

 .. date: 2023-01-10-16-59-33
 .. gh-issue: 100923
 .. nonce: ypJAX-
 .. section: Core and Builtins

 Remove the ``mask`` cache entry for the :opcode:`COMPARE_OP` instruction and
 embed the mask into the oparg.

 ..

 .. date: 2023-01-10-14-11-17
 .. gh-issue: 100892
 .. nonce: qfBVYI
 .. section: Core and Builtins

 Fix race while iterating over thread states in clearing
 :class:`threading.local`. Patch by Kumar Aditya.

 ..

 .. date: 2023-01-06-09-22-21
 .. gh-issue: 91351
 .. nonce: iq2vZ_
 .. section: Core and Builtins

 Fix a case where re-entrant imports could corrupt the import deadlock
 detection code and cause a :exc:`KeyError` to be raised out of
 :mod:`importlib/_bootstrap`.  In addition to the straightforward cases, this
 could also happen when garbage collection leads to a warning being emitted
 -- as happens when it collects an open socket or file)

 ..

 .. date: 2023-01-03-20-59-20
 .. gh-issue: 100726
 .. nonce: W9huFl
 .. section: Core and Builtins

 Optimize construction of ``range`` object for medium size integers.

 ..

 .. date: 2023-01-03-14-33-23
 .. gh-issue: 100712
 .. nonce: po6xyB
 .. section: Core and Builtins

 Added option to build cpython with specialization disabled, by setting
 ``ENABLE_SPECIALIZATION=False`` in :mod:`opcode`, followed by ``make
 regen-all``.

 ..

 .. bpo: 32780
 .. date: 2018-02-05-21-54-46
 .. nonce: Dtiz8z
 .. section: Core and Builtins

 Inter-field padding is now inserted into the PEP3118 format strings obtained
 from :class:`ctypes.Structure` objects, reflecting their true representation
 in memory.

 ..

 .. date: 2023-02-05-14-39-49
 .. gh-issue: 101541
 .. nonce: Mo3ppp
 .. section: Library

 [Enum] - fix psuedo-flag creation

 ..

 .. date: 2023-02-04-21-01-49
 .. gh-issue: 101570
 .. nonce: lbtUsD
 .. section: Library

 Upgrade pip wheel bundled with ensurepip (pip 23.0)

 ..

 .. date: 2023-01-26-06-44-35
 .. gh-issue: 101323
 .. nonce: h8Hk11
 .. section: Library

 Fix a bug where errors where not thrown by zlib._ZlibDecompressor if
 encountered during decompressing.

 ..

 .. date: 2023-01-26-01-25-56
 .. gh-issue: 101317
 .. nonce: vWaS1x
 .. section: Library

 Add *ssl_shutdown_timeout* parameter for
 :meth:`asyncio.StreamWriter.start_tls`.

 ..

 .. date: 2023-01-25-18-07-20
 .. gh-issue: 101326
 .. nonce: KL4SFv
 .. section: Library

 Fix regression when passing ``None`` as second or third argument to
 ``FutureIter.throw``.

 ..

 .. date: 2023-01-24-12-53-59
 .. gh-issue: 92123
 .. nonce: jf6TO5
 .. section: Library

 Adapt the ``_elementtree`` extension module to multi-phase init
 (:pep:`489`). Patches by Erlend E. Aasland.

 ..

 .. date: 2023-01-21-16-50-22
 .. gh-issue: 100795
 .. nonce: NPMZf7
 .. section: Library

 Avoid potential unexpected ``freeaddrinfo`` call (double free) in
 :mod:`socket` when when a libc ``getaddrinfo()`` implementation leaves
 garbage in an output pointer when returning an error. Original patch by
 Sergey G. Brester.

 ..

 .. date: 2023-01-20-10-46-59
 .. gh-issue: 101143
 .. nonce: hJo8hu
 .. section: Library

 Remove unused references to :class:`~asyncio.TimerHandle` in
 ``asyncio.base_events.BaseEventLoop._add_callback``.

 ..

 .. date: 2023-01-18-17-58-50
 .. gh-issue: 101144
 .. nonce: FHd8Un
 .. section: Library

 Make :func:`zipfile.Path.open` and :func:`zipfile.Path.read_text` also
 accept ``encoding`` as a positional argument. This was the behavior in
 Python 3.9 and earlier.  3.10 introduced a regression where supplying it as
 a positional argument would lead to a :exc:`TypeError`.

 ..

 .. date: 2023-01-15-09-11-30
 .. gh-issue: 94518
 .. nonce: jvxtxm
 .. section: Library

 Group-related variables of ``_posixsubprocess`` module are renamed to stress
 that supplimentary group affinity is added to a fork, not replace the
 inherited ones. Patch by Oleg Iarygin.

 ..

 .. date: 2023-01-14-12-58-21
 .. gh-issue: 101015
 .. nonce: stWFid
 .. section: Library

 Fix :func:`typing.get_type_hints` on ``'*tuple[...]'`` and ``*tuple[...]``.
 It must not drop the ``Unpack`` part.

 ..

 .. date: 2023-01-12-21-22-20
 .. gh-issue: 101000
 .. nonce: wz4Xgc
 .. section: Library

 Add :func:`os.path.splitroot()`, which splits a path into a 3-item tuple
 ``(drive, root, tail)``. This new function is used by :mod:`pathlib` to
 improve the performance of path construction by up to a third.

 ..

 .. date: 2023-01-12-01-18-13
 .. gh-issue: 100573
 .. nonce: KDskqo
 .. section: Library

 Fix a Windows :mod:`asyncio` bug with named pipes where a client doing
 ``os.stat()`` on the pipe would cause an error in the server that disabled
 serving future requests.

 ..

 .. date: 2023-01-08-00-12-44
 .. gh-issue: 39615
 .. nonce: gn4PhB
 .. section: Library

 :func:`warnings.warn` now has the ability to skip stack frames based on code
 filename prefix rather than only a numeric ``stacklevel`` via the new
 ``skip_file_prefixes`` keyword argument.

 ..

 .. date: 2023-01-04-14-42-59
 .. gh-issue: 100750
 .. nonce: iFJs5Y
 .. section: Library

 pass encoding kwarg to subprocess in platform

 ..

 .. date: 2022-12-21-17-49-50
 .. gh-issue: 100160
 .. nonce: N0NHRj
 .. section: Library

 Emit a deprecation warning in
 :meth:`asyncio.DefaultEventLoopPolicy.get_event_loop` if there is no current
 event loop set and it decides to create one.

 ..

 .. date: 2022-12-19-23-19-26
 .. gh-issue: 96290
 .. nonce: qFjsi6
 .. section: Library

 Fix handling of partial and invalid UNC drives in ``ntpath.splitdrive()``,
 and in ``ntpath.normpath()`` on non-Windows systems. Paths such as
 '\\server' and '\\' are now considered by ``splitdrive()`` to contain only a
 drive, and consequently are not modified by ``normpath()`` on non-Windows
 systems. The behaviour of ``normpath()`` on Windows systems is unaffected,
 as native OS APIs are used. Patch by Eryk Sun, with contributions by Barney
 Gale.

 ..

 .. date: 2022-12-11-14-38-59
 .. gh-issue: 99952
 .. nonce: IYGLzr
 .. section: Library

 Fix a reference undercounting issue in :class:`ctypes.Structure` with
 ``from_param()`` results larger than a C pointer.

 ..

 .. date: 2022-12-10-15-30-17
 .. gh-issue: 67790
 .. nonce: P9YUZM
 .. section: Library

 Add float-style formatting support for :class:`fractions.Fraction`
 instances.

 ..

 .. date: 2022-11-24-21-52-31
 .. gh-issue: 99266
 .. nonce: 88GcV9
 .. section: Library

 Preserve more detailed error messages in :mod:`ctypes`.

 ..

 .. date: 2022-11-15-23-30-39
 .. gh-issue: 86682
 .. nonce: gK9i1N
 .. section: Library

 Ensure runtime-created collections have the correct module name using the
 newly added (internal) :func:`sys._getframemodulename`.

 ..

 .. date: 2022-11-14-03-06-03
 .. gh-issue: 88597
 .. nonce: EYJA-Q
 .. section: Library

 :mod:`uuid` now has a command line interface. Try ``python -m uuid -h``.

 ..

 .. date: 2022-09-26-21-18-47
 .. gh-issue: 60580
 .. nonce: 0hBgde
 .. section: Library

 :data:`ctypes.wintypes.BYTE` definition changed from :data:`~ctypes.c_byte`
 to :data:`~ctypes.c_ubyte` to match Windows SDK. Patch by Anatoly Techtonik
 and Oleg Iarygin.

 ..

 .. date: 2022-07-22-13-38-37
 .. gh-issue: 94518
 .. nonce: _ZP0cz
 .. section: Library

 ``_posixsubprocess`` now initializes all UID and GID variables using a
 reserved ``-1`` value instead of a separate flag. Patch by Oleg Iarygin.

 ..

 .. bpo: 38941
 .. date: 2022-02-05-12-01-58
 .. nonce: 8IhvyG
 .. section: Library

 The :mod:`xml.etree.ElementTree` module now emits :exc:`DeprecationWarning`
 when testing the truth value of an :class:`xml.etree.ElementTree.Element`.
 Before, the Python implementation emitted :exc:`FutureWarning`, and the C
 implementation emitted nothing.

 ..

 .. bpo: 40077
 .. date: 2020-11-20-21-06-08
 .. nonce: M-iZq3
 .. section: Library

 Convert :mod:`elementtree` types to heap types. Patch by Erlend E. Aasland.

 ..

 .. bpo: 29847
 .. date: 2020-04-18-17-45-03
 .. nonce: Uxtbq0
 .. section: Library

 Fix a bug where :class:`pathlib.Path` accepted and ignored keyword
 arguments. Patch provided by Yurii Karabas.

 ..

 .. date: 2018-05-21-17-18-00
 .. gh-issue: 77772
 .. nonce: Fhg84L
 .. section: Library

 :class:`ctypes.CDLL`, :class:`ctypes.OleDLL`, :class:`ctypes.WinDLL`, and
 :class:`ctypes.PyDLL` now accept :term:`path-like objects <path-like
 object>` as their ``name`` argument. Patch by Robert Hoelzl.

 ..

 .. date: 2022-06-19-22-04-47
 .. gh-issue: 88324
 .. nonce: GHhSQ1
 .. section: Documentation

 Reword :mod:`subprocess` to emphasize default behavior of *stdin*, *stdout*,
 and *stderr* arguments. Remove inaccurate statement about child file handle
 inheritance.

 ..

 .. date: 2023-02-04-17-24-33
 .. gh-issue: 101334
 .. nonce: _yOqwg
 .. section: Tests

 ``test_tarfile`` has been updated to pass when run as a high UID.

 ..

 .. date: 2023-02-04-06-59-07
 .. gh-issue: 101282
 .. nonce: 7sQz5l
 .. section: Build

 Update BOLT configration not to use depreacted usage of ``--split
 functions``. Patch by Dong-hee Na.

 ..

 .. date: 2023-02-02-23-43-46
 .. gh-issue: 101522
 .. nonce: lnUDta
 .. section: Build

 Allow overriding Windows dependencies versions and paths using MSBuild
 properties.

 ..

 .. date: 2023-01-26-19-02-11
 .. gh-issue: 77532
 .. nonce: cXD8bg
 .. section: Build

 Minor fixes to allow building with ``PlatformToolset=ClangCL`` on Windows.

 ..

 .. date: 2023-01-21-10-31-35
 .. gh-issue: 101152
 .. nonce: xvM8pL
 .. section: Build

 In accordance with :PEP:`699`, the ``ma_version_tag`` field in
 :c:type:`PyDictObject` is deprecated for extension modules. Accessing this
 field will generate a compiler warning at compile time. This field will be
 removed in Python 3.14.

 ..

 .. date: 2023-01-17-21-32-51
 .. gh-issue: 100340
 .. nonce: i9zRGM
 .. section: Build

 Allows -Wno-int-conversion for wasm-sdk 17 and onwards, thus enables
 building WASI builds once against the latest sdk.

 ..

 .. date: 2023-01-15-11-22-15
 .. gh-issue: 101060
 .. nonce: 0mYk9E
 .. section: Build

 Conditionally add ``-fno-reorder-blocks-and-partition`` in configure.
 Effectively fixes ``--enable-bolt`` when using Clang, as this appears to be
 a GCC-only flag.

 ..

 .. date: 2022-10-27-09-57-12
 .. gh-issue: 98705
 .. nonce: H11XmR
 .. section: Build

 ``__bool__`` is defined in AIX system header files which breaks the build in
 AIX, so undefine it.

 ..

 .. date: 2022-10-25-11-53-55
 .. gh-issue: 98636
 .. nonce: e0RPAr
 .. section: Build

 Fix a regression in detecting ``gdbm_compat`` library for the ``_gdbm``
 module build.

 ..

 .. date: 2022-08-30-10-16-31
 .. gh-issue: 96305
 .. nonce: 274i8B
 .. section: Build

 ``_aix_support`` now uses a simple code to get platform details rather than
 the now non-existent ``_bootsubprocess`` during bootstrap.

 ..

 .. date: 2023-02-03-17-53-06
 .. gh-issue: 101543
 .. nonce: cORAT4
 .. section: Windows

 Ensure the install path in the registry is only used when the standard
 library hasn't been located in any other way.

 ..

 .. date: 2023-01-31-16-50-07
 .. gh-issue: 101467
 .. nonce: ye9t-L
 .. section: Windows

 The ``py.exe`` launcher now correctly filters when only a single runtime is
 installed. It also correctly handles prefix matches on tags so that ``-3.1``
 does not match ``3.11``, but would still match ``3.1-32``.

 ..

 .. date: 2023-01-25-00-23-31
 .. gh-issue: 99834
 .. nonce: WN41lc
 .. section: Windows

 Updates bundled copy of Tcl/Tk to 8.6.13.0

 ..

 .. date: 2023-01-18-18-25-18
 .. gh-issue: 101135
 .. nonce: HF9VlG
 .. section: Windows

 Restore ability to launch older 32-bit versions from the :file:`py.exe`
 launcher when both 32-bit and 64-bit installs of the same version are
 available.

 ..

 .. date: 2023-01-17-18-17-58
 .. gh-issue: 82052
 .. nonce: mWyysT
 .. section: Windows

 Fixed an issue where writing more than 32K of Unicode output to the console
 screen in one go can result in mojibake.

 ..

 .. date: 2023-01-11-16-28-09
 .. gh-issue: 100320
 .. nonce: 2DU2it
 .. section: Windows

 Ensures the ``PythonPath`` registry key from an install is used when
 launching from a different copy of Python that relies on an existing install
 to provide a copy of its modules and standard library.

 ..

 .. date: 2023-01-11-14-42-11
 .. gh-issue: 100247
 .. nonce: YfEmSz
 .. section: Windows

 Restores support for the :file:`py.exe` launcher finding shebang commands in
 its configuration file using the full command name.
	.. date: 2022-11-08-12-06-52
	.. gh-issue: 99108
	.. nonce: 4Wrsuh
	.. release date: 2023-02-07
	.. section: Security

	Replace the builtin :mod:`hashlib` implementations of SHA2-224 and SHA2-256
	originally from LibTomCrypt with formally verified, side-channel resistant
	code from the `HACL* <https://github.com/hacl-star/hacl-star/>`_ project.
	The builtins remain a fallback only used when OpenSSL does not provide them.

	..

	.. date: 2023-02-06-20-13-36
	.. gh-issue: 92173
	.. nonce: RQE0mk
	.. section: Core and Builtins

	Fix the ``defs`` and ``kwdefs`` arguments to :c:func:`PyEval_EvalCodeEx` and
	a reference leak in that function.

	..

	.. date: 2023-01-30-11-56-09
	.. gh-issue: 59956
	.. nonce: 7xqnC_
	.. section: Core and Builtins

	The GILState API is now partially compatible with subinterpreters.
	Previously, ``PyThreadState_GET()`` and ``PyGILState_GetThisThreadState()``
	would get out of sync, causing inconsistent behavior and crashes.

	..

	.. date: 2023-01-30-08-59-47
	.. gh-issue: 101400
	.. nonce: Di_ZFm
	.. section: Core and Builtins

	Fix wrong lineno in exception message on :keyword:`continue` or
	:keyword:`break` which are not in a loop. Patch by Dong-hee Na.

	..

	.. date: 2023-01-28-20-31-42
	.. gh-issue: 101372
	.. nonce: 8BcpCC
	.. section: Core and Builtins

	Fix :func:`~unicodedata.is_normalized` to properly handle the UCD 3.2.0
	cases. Patch by Dong-hee Na.

	..

	.. date: 2023-01-28-13-11-52
	.. gh-issue: 101266
	.. nonce: AxV3OF
	.. section: Core and Builtins

	Fix :func:`sys.getsizeof` reporting for :class:`int` subclasses.

	..

	.. date: 2023-01-24-17-13-32
	.. gh-issue: 101291
	.. nonce: Yr6u_c
	.. section: Core and Builtins

	Refactor the ``PyLongObject`` struct into a normal Python object header and
	a ``PyLongValue`` struct.

	..

	.. date: 2023-01-15-03-26-04
	.. gh-issue: 101046
	.. nonce: g2CM4S
	.. section: Core and Builtins

	Fix a possible memory leak in the parser when raising :exc:`MemoryError`.
	Patch by Pablo Galindo

	..

	.. date: 2023-01-14-17-03-08
	.. gh-issue: 101037
	.. nonce: 9ATNuf
	.. section: Core and Builtins

	Fix potential memory underallocation issue for instances of :class:`int`
	subclasses with value zero.

	..

	.. date: 2023-01-13-12-56-20
	.. gh-issue: 100762
	.. nonce: YvHaQJ
	.. section: Core and Builtins

	Record the (virtual) exception block depth in the oparg of
	:opcode:`YIELD_VALUE`. Use this to avoid the expensive ``throw()`` when
	closing generators (and coroutines) that can be closed trivially.

	..

	.. date: 2023-01-12-13-46-49
	.. gh-issue: 100982
	.. nonce: mJ234s
	.. section: Core and Builtins

	Adds a new :opcode:`COMPARE_AND_BRANCH` instruction. This is a bit more
	efficient when performing a comparison immediately followed by a branch, and
	restores the design intent of PEP 659 that specializations are local to a
	single instruction.

	..

	.. date: 2023-01-11-22-52-19
	.. gh-issue: 100942
	.. nonce: ontOy_
	.. section: Core and Builtins

	Fixed segfault in property.getter/setter/deleter that occurred when a
	property subclass overrode the ``__new__`` method to return a non-property
	instance.

	..

	.. date: 2023-01-10-16-59-33
	.. gh-issue: 100923
	.. nonce: ypJAX-
	.. section: Core and Builtins

	Remove the ``mask`` cache entry for the :opcode:`COMPARE_OP` instruction and
	embed the mask into the oparg.

	..

	.. date: 2023-01-10-14-11-17
	.. gh-issue: 100892
	.. nonce: qfBVYI
	.. section: Core and Builtins

	Fix race while iterating over thread states in clearing
	:class:`threading.local`. Patch by Kumar Aditya.

	..

	.. date: 2023-01-06-09-22-21
	.. gh-issue: 91351
	.. nonce: iq2vZ_
	.. section: Core and Builtins

	Fix a case where re-entrant imports could corrupt the import deadlock
	detection code and cause a :exc:`KeyError` to be raised out of
	:mod:`importlib/_bootstrap`. In addition to the straightforward cases, this
	could also happen when garbage collection leads to a warning being emitted
	-- as happens when it collects an open socket or file)

	..

	.. date: 2023-01-03-20-59-20
	.. gh-issue: 100726
	.. nonce: W9huFl
	.. section: Core and Builtins

	Optimize construction of ``range`` object for medium size integers.

	..

	.. date: 2023-01-03-14-33-23
	.. gh-issue: 100712
	.. nonce: po6xyB
	.. section: Core and Builtins

	Added option to build cpython with specialization disabled, by setting
	``ENABLE_SPECIALIZATION=False`` in :mod:`opcode`, followed by ``make
	regen-all``.

	..

	.. bpo: 32780
	.. date: 2018-02-05-21-54-46
	.. nonce: Dtiz8z
	.. section: Core and Builtins

	Inter-field padding is now inserted into the PEP3118 format strings obtained
	from :class:`ctypes.Structure` objects, reflecting their true representation
	in memory.

	..

	.. date: 2023-02-05-14-39-49
	.. gh-issue: 101541
	.. nonce: Mo3ppp
	.. section: Library

	[Enum] - fix psuedo-flag creation

	..

	.. date: 2023-02-04-21-01-49
	.. gh-issue: 101570
	.. nonce: lbtUsD
	.. section: Library

	Upgrade pip wheel bundled with ensurepip (pip 23.0)

	..

	.. date: 2023-01-26-06-44-35
	.. gh-issue: 101323
	.. nonce: h8Hk11
	.. section: Library

	Fix a bug where errors where not thrown by zlib._ZlibDecompressor if
	encountered during decompressing.

	..

	.. date: 2023-01-26-01-25-56
	.. gh-issue: 101317
	.. nonce: vWaS1x
	.. section: Library

	Add ssl_shutdown_timeout parameter for
	:meth:`asyncio.StreamWriter.start_tls`.

	..

	.. date: 2023-01-25-18-07-20
	.. gh-issue: 101326
	.. nonce: KL4SFv
	.. section: Library

	Fix regression when passing ``None`` as second or third argument to
	``FutureIter.throw``.

	..

	.. date: 2023-01-24-12-53-59
	.. gh-issue: 92123
	.. nonce: jf6TO5
	.. section: Library

	Adapt the ``_elementtree`` extension module to multi-phase init
	(:pep:`489`). Patches by Erlend E. Aasland.

	..

	.. date: 2023-01-21-16-50-22
	.. gh-issue: 100795
	.. nonce: NPMZf7
	.. section: Library

	Avoid potential unexpected ``freeaddrinfo`` call (double free) in
	:mod:`socket` when when a libc ``getaddrinfo()`` implementation leaves
	garbage in an output pointer when returning an error. Original patch by
	Sergey G. Brester.

	..

	.. date: 2023-01-20-10-46-59
	.. gh-issue: 101143
	.. nonce: hJo8hu
	.. section: Library

	Remove unused references to :class:`~asyncio.TimerHandle` in
	``asyncio.base_events.BaseEventLoop._add_callback``.

	..

	.. date: 2023-01-18-17-58-50
	.. gh-issue: 101144
	.. nonce: FHd8Un
	.. section: Library

	Make :func:`zipfile.Path.open` and :func:`zipfile.Path.read_text` also
	accept ``encoding`` as a positional argument. This was the behavior in
	Python 3.9 and earlier. 3.10 introduced a regression where supplying it as
	a positional argument would lead to a :exc:`TypeError`.

	..

	.. date: 2023-01-15-09-11-30
	.. gh-issue: 94518
	.. nonce: jvxtxm
	.. section: Library

	Group-related variables of ``_posixsubprocess`` module are renamed to stress
	that supplimentary group affinity is added to a fork, not replace the
	inherited ones. Patch by Oleg Iarygin.

	..

	.. date: 2023-01-14-12-58-21
	.. gh-issue: 101015
	.. nonce: stWFid
	.. section: Library

	Fix :func:`typing.get_type_hints` on ``'tuple[...]'`` and ``tuple[...]``.
	It must not drop the ``Unpack`` part.

	..

	.. date: 2023-01-12-21-22-20
	.. gh-issue: 101000
	.. nonce: wz4Xgc
	.. section: Library

	Add :func:`os.path.splitroot()`, which splits a path into a 3-item tuple
	``(drive, root, tail)``. This new function is used by :mod:`pathlib` to
	improve the performance of path construction by up to a third.

	..

	.. date: 2023-01-12-01-18-13
	.. gh-issue: 100573
	.. nonce: KDskqo
	.. section: Library

	Fix a Windows :mod:`asyncio` bug with named pipes where a client doing
	``os.stat()`` on the pipe would cause an error in the server that disabled
	serving future requests.

	..

	.. date: 2023-01-08-00-12-44
	.. gh-issue: 39615
	.. nonce: gn4PhB
	.. section: Library

	:func:`warnings.warn` now has the ability to skip stack frames based on code
	filename prefix rather than only a numeric ``stacklevel`` via the new
	``skip_file_prefixes`` keyword argument.

	..

	.. date: 2023-01-04-14-42-59
	.. gh-issue: 100750
	.. nonce: iFJs5Y
	.. section: Library

	pass encoding kwarg to subprocess in platform

	..

	.. date: 2022-12-21-17-49-50
	.. gh-issue: 100160
	.. nonce: N0NHRj
	.. section: Library

	Emit a deprecation warning in
	:meth:`asyncio.DefaultEventLoopPolicy.get_event_loop` if there is no current
	event loop set and it decides to create one.

	..

	.. date: 2022-12-19-23-19-26
	.. gh-issue: 96290
	.. nonce: qFjsi6
	.. section: Library

	Fix handling of partial and invalid UNC drives in ``ntpath.splitdrive()``,
	and in ``ntpath.normpath()`` on non-Windows systems. Paths such as
	'\\server' and '\\' are now considered by ``splitdrive()`` to contain only a
	drive, and consequently are not modified by ``normpath()`` on non-Windows
	systems. The behaviour of ``normpath()`` on Windows systems is unaffected,
	as native OS APIs are used. Patch by Eryk Sun, with contributions by Barney
	Gale.

	..

	.. date: 2022-12-11-14-38-59
	.. gh-issue: 99952
	.. nonce: IYGLzr
	.. section: Library

	Fix a reference undercounting issue in :class:`ctypes.Structure` with
	``from_param()`` results larger than a C pointer.

	..

	.. date: 2022-12-10-15-30-17
	.. gh-issue: 67790
	.. nonce: P9YUZM
	.. section: Library

	Add float-style formatting support for :class:`fractions.Fraction`
	instances.

	..

	.. date: 2022-11-24-21-52-31
	.. gh-issue: 99266
	.. nonce: 88GcV9
	.. section: Library

	Preserve more detailed error messages in :mod:`ctypes`.

	..

	.. date: 2022-11-15-23-30-39
	.. gh-issue: 86682
	.. nonce: gK9i1N
	.. section: Library

	Ensure runtime-created collections have the correct module name using the
	newly added (internal) :func:`sys._getframemodulename`.

	..

	.. date: 2022-11-14-03-06-03
	.. gh-issue: 88597
	.. nonce: EYJA-Q
	.. section: Library

	:mod:`uuid` now has a command line interface. Try ``python -m uuid -h``.

	..

	.. date: 2022-09-26-21-18-47
	.. gh-issue: 60580
	.. nonce: 0hBgde
	.. section: Library

	:data:`ctypes.wintypes.BYTE` definition changed from :data:`~ctypes.c_byte`
	to :data:`~ctypes.c_ubyte` to match Windows SDK. Patch by Anatoly Techtonik
	and Oleg Iarygin.

	..

	.. date: 2022-07-22-13-38-37
	.. gh-issue: 94518
	.. nonce: _ZP0cz
	.. section: Library

	``_posixsubprocess`` now initializes all UID and GID variables using a
	reserved ``-1`` value instead of a separate flag. Patch by Oleg Iarygin.

	..

	.. bpo: 38941
	.. date: 2022-02-05-12-01-58
	.. nonce: 8IhvyG
	.. section: Library

	The :mod:`xml.etree.ElementTree` module now emits :exc:`DeprecationWarning`
	when testing the truth value of an :class:`xml.etree.ElementTree.Element`.
	Before, the Python implementation emitted :exc:`FutureWarning`, and the C
	implementation emitted nothing.

	..

	.. bpo: 40077
	.. date: 2020-11-20-21-06-08
	.. nonce: M-iZq3
	.. section: Library

	Convert :mod:`elementtree` types to heap types. Patch by Erlend E. Aasland.

	..

	.. bpo: 29847
	.. date: 2020-04-18-17-45-03
	.. nonce: Uxtbq0
	.. section: Library

	Fix a bug where :class:`pathlib.Path` accepted and ignored keyword
	arguments. Patch provided by Yurii Karabas.

	..

	.. date: 2018-05-21-17-18-00
	.. gh-issue: 77772
	.. nonce: Fhg84L
	.. section: Library

	:class:`ctypes.CDLL`, :class:`ctypes.OleDLL`, :class:`ctypes.WinDLL`, and
	:class:`ctypes.PyDLL` now accept :term:`path-like objects <path-like
	object>` as their ``name`` argument. Patch by Robert Hoelzl.

	..

	.. date: 2022-06-19-22-04-47
	.. gh-issue: 88324
	.. nonce: GHhSQ1
	.. section: Documentation

	Reword :mod:`subprocess` to emphasize default behavior of stdin, stdout,
	and stderr arguments. Remove inaccurate statement about child file handle
	inheritance.

	..

	.. date: 2023-02-04-17-24-33
	.. gh-issue: 101334
	.. nonce: _yOqwg
	.. section: Tests

	``test_tarfile`` has been updated to pass when run as a high UID.

	..

	.. date: 2023-02-04-06-59-07
	.. gh-issue: 101282
	.. nonce: 7sQz5l
	.. section: Build

	Update BOLT configration not to use depreacted usage of ``--split
	functions``. Patch by Dong-hee Na.

	..

	.. date: 2023-02-02-23-43-46
	.. gh-issue: 101522
	.. nonce: lnUDta
	.. section: Build

	Allow overriding Windows dependencies versions and paths using MSBuild
	properties.

	..

	.. date: 2023-01-26-19-02-11
	.. gh-issue: 77532
	.. nonce: cXD8bg
	.. section: Build

	Minor fixes to allow building with ``PlatformToolset=ClangCL`` on Windows.

	..

	.. date: 2023-01-21-10-31-35
	.. gh-issue: 101152
	.. nonce: xvM8pL
	.. section: Build

	In accordance with :PEP:`699`, the ``ma_version_tag`` field in
	:c:type:`PyDictObject` is deprecated for extension modules. Accessing this
	field will generate a compiler warning at compile time. This field will be
	removed in Python 3.14.

	..

	.. date: 2023-01-17-21-32-51
	.. gh-issue: 100340
	.. nonce: i9zRGM
	.. section: Build

	Allows -Wno-int-conversion for wasm-sdk 17 and onwards, thus enables
	building WASI builds once against the latest sdk.

	..

	.. date: 2023-01-15-11-22-15
	.. gh-issue: 101060
	.. nonce: 0mYk9E
	.. section: Build

	Conditionally add ``-fno-reorder-blocks-and-partition`` in configure.
	Effectively fixes ``--enable-bolt`` when using Clang, as this appears to be
	a GCC-only flag.

	..

	.. date: 2022-10-27-09-57-12
	.. gh-issue: 98705
	.. nonce: H11XmR
	.. section: Build

	``__bool__`` is defined in AIX system header files which breaks the build in
	AIX, so undefine it.

	..

	.. date: 2022-10-25-11-53-55
	.. gh-issue: 98636
	.. nonce: e0RPAr
	.. section: Build

	Fix a regression in detecting ``gdbm_compat`` library for the ``_gdbm``
	module build.

	..

	.. date: 2022-08-30-10-16-31
	.. gh-issue: 96305
	.. nonce: 274i8B
	.. section: Build

	``_aix_support`` now uses a simple code to get platform details rather than
	the now non-existent ``_bootsubprocess`` during bootstrap.

	..

	.. date: 2023-02-03-17-53-06
	.. gh-issue: 101543
	.. nonce: cORAT4
	.. section: Windows

	Ensure the install path in the registry is only used when the standard
	library hasn't been located in any other way.

	..

	.. date: 2023-01-31-16-50-07
	.. gh-issue: 101467
	.. nonce: ye9t-L
	.. section: Windows

	The ``py.exe`` launcher now correctly filters when only a single runtime is
	installed. It also correctly handles prefix matches on tags so that ``-3.1``
	does not match ``3.11``, but would still match ``3.1-32``.

	..

	.. date: 2023-01-25-00-23-31
	.. gh-issue: 99834
	.. nonce: WN41lc
	.. section: Windows

	Updates bundled copy of Tcl/Tk to 8.6.13.0

	..

	.. date: 2023-01-18-18-25-18
	.. gh-issue: 101135
	.. nonce: HF9VlG
	.. section: Windows

	Restore ability to launch older 32-bit versions from the :file:`py.exe`
	launcher when both 32-bit and 64-bit installs of the same version are
	available.

	..

	.. date: 2023-01-17-18-17-58
	.. gh-issue: 82052
	.. nonce: mWyysT
	.. section: Windows

	Fixed an issue where writing more than 32K of Unicode output to the console
	screen in one go can result in mojibake.

	..

	.. date: 2023-01-11-16-28-09
	.. gh-issue: 100320
	.. nonce: 2DU2it
	.. section: Windows

	Ensures the ``PythonPath`` registry key from an install is used when
	launching from a different copy of Python that relies on an existing install
	to provide a copy of its modules and standard library.

	..

	.. date: 2023-01-11-14-42-11
	.. gh-issue: 100247
	.. nonce: YfEmSz
	.. section: Windows

	Restores support for the :file:`py.exe` launcher finding shebang commands in
	its configuration file using the full command name.