.. bpo: 46940
.. date: 2022-03-06-20-16-13
.. nonce: _X47Hx
.. release date: 2022-03-07
.. section: Core and Builtins
Avoid overriding :exc:`AttributeError` metadata information for nested
attribute access calls. Patch by Pablo Galindo.
..
.. bpo: 46927
.. date: 2022-03-05-12-23-58
.. nonce: URbHBi
.. section: Core and Builtins
Include the type's name in the error message for subscripting non-generic
types.
..
.. bpo: 46921
.. date: 2022-03-05-00-43-22
.. nonce: tyuPeB
.. section: Core and Builtins
Support vectorcall for ``super()``. Patch by Ken Jin.
..
.. bpo: 46841
.. date: 2022-03-03-14-31-53
.. nonce: agf-3X
.. section: Core and Builtins
Fix incorrect handling of inline cache entries when specializing
:opcode:`BINARY_OP`.
..
.. bpo: 46841
.. date: 2022-03-03-12-36-15
.. nonce: apPev2
.. section: Core and Builtins
Use an oparg to simplify the construction of helpful error messages in
:opcode:`GET_AWAITABLE`.
..
.. bpo: 46903
.. date: 2022-03-03-12-02-41
.. nonce: OzgaFZ
.. section: Core and Builtins
Make sure that str subclasses can be used as attribute names for instances
with virtual dictionaries. Fixes regression in 3.11alpha
..
.. bpo: 46841
.. date: 2022-03-03-10-46-13
.. nonce: 7CkuZx
.. section: Core and Builtins
Add more detailed specialization failure stats for :opcode:`COMPARE_OP`
followed by :opcode:`EXTENDED_ARG`.
..
.. bpo: 46891
.. date: 2022-03-02-15-04-08
.. nonce: aIAgTD
.. section: Core and Builtins
Fix bug introduced during 3.11alpha where subclasses of ``types.ModuleType``
with ``__slots__`` were not initialized correctly, resulting in an
interpreter crash.
..
.. bpo: 46841
.. date: 2022-03-01-17-47-58
.. nonce: inYQlU
.. section: Core and Builtins
Use inline caching for :opcode:`LOAD_ATTR`, :opcode:`LOAD_METHOD`, and
:opcode:`STORE_ATTR`.
..
.. bpo: 46841
.. date: 2022-02-28-15-46-36
.. nonce: MDQoty
.. section: Core and Builtins
Use inline cache for :opcode:`BINARY_SUBSCR`.
..
.. bpo: 46841
.. date: 2022-02-28-12-01-04
.. nonce: r60AMJ
.. section: Core and Builtins
Use inline caching for :opcode:`COMPARE_OP`.
..
.. bpo: 46864
.. date: 2022-02-26-19-26-36
.. nonce: EmLgFp
.. section: Core and Builtins
Deprecate ``PyBytesObject.ob_shash``. It will be removed in Python 3.13.
..
.. bpo: 46841
.. date: 2022-02-25-15-18-40
.. nonce: tmLpgC
.. section: Core and Builtins
Use inline caching for :opcode:`UNPACK_SEQUENCE`.
..
.. bpo: 46845
.. date: 2022-02-25-14-57-21
.. nonce: TUvaMG
.. section: Core and Builtins
Reduces dict size by removing hash value from hash table when all inserted
keys are Unicode. For example, ``sys.getsizeof(dict.fromkeys("abcdefg"))``
becomes 272 bytes from 352 bytes on 64bit platform.
..
.. bpo: 46841
.. date: 2022-02-25-13-18-18
.. nonce: 86QiQu
.. section: Core and Builtins
Use inline cache for :opcode:`LOAD_GLOBAL`.
..
.. bpo: 46852
.. date: 2022-02-25-02-01-42
.. nonce: _3zg8D
.. section: Core and Builtins
Rename the private undocumented ``float.__set_format__()`` method to
``float.__setformat__()`` to fix a typo introduced in Python 3.7. The method
is only used by test_float. Patch by Victor Stinner.
..
.. bpo: 46852
.. date: 2022-02-25-01-42-45
.. nonce: nkRDvV
.. section: Core and Builtins
Remove the undocumented private ``float.__set_format__()`` method,
previously known as ``float.__setformat__()`` in Python 3.7. Its docstring
said: "You probably don't want to use this function. It exists mainly to be
used in Python's test suite." Patch by Victor Stinner.
..
.. bpo: 40116
.. date: 2022-02-24-16-34-17
.. nonce: AeVGG2
.. section: Core and Builtins
Fix regression that dict.update(other) may don't respect iterate order of
other when other is key sharing dict.
..
.. bpo: 46712
.. date: 2022-02-24-07-50-43
.. nonce: pw7vQV
.. section: Core and Builtins
Share global string identifiers in deep-frozen modules.
..
.. bpo: 46430
.. date: 2022-02-24-07-33-29
.. nonce: c91TAg
.. section: Core and Builtins
Fix memory leak in interned strings of deep-frozen modules.
..
.. bpo: 46841
.. date: 2022-02-23-18-17-30
.. nonce: fns8HB
.. section: Core and Builtins
Store :opcode:`BINARY_OP` caches inline using a new :opcode:`CACHE`
instruction.
..
.. bpo: 45107
.. date: 2022-02-23-15-26-02
.. nonce: axcgHn
.. section: Core and Builtins
Specialize ``LOAD_METHOD`` for instances with a dict.
..
.. bpo: 44337
.. date: 2022-02-22-17-19-45
.. nonce: XA-egu
.. section: Core and Builtins
Reduce the memory usage of specialized :opcode:`LOAD_ATTR` and
:opcode:`STORE_ATTR` instructions.
..
.. bpo: 46729
.. date: 2022-02-22-17-18-36
.. nonce: ZwGTFq
.. section: Core and Builtins
Add number of sub-exceptions to :meth:`BaseException.__str__`.
..
.. bpo: 45885
.. date: 2022-02-22-15-48-32
.. nonce: W2vkaI
.. section: Core and Builtins
Don't un-adapt :opcode:`COMPARE_OP` when collecting specialization stats.
..
.. bpo: 46329
.. date: 2022-02-22-14-03-56
.. nonce: RX_AzJ
.. section: Core and Builtins
Fix specialization stats gathering for :opcode:`!PRECALL` instructions.
..
.. bpo: 46794
.. date: 2022-02-22-12-07-53
.. nonce: 6WvJ9o
.. section: Core and Builtins
Bump up the libexpat version into 2.4.6
..
.. bpo: 46823
.. date: 2022-02-22-05-14-25
.. nonce: z9NZC9
.. section: Core and Builtins
Implement a specialized combined opcode
``LOAD_FAST__LOAD_ATTR_INSTANCE_VALUE``. Patch by Dennis Sweeney.
..
.. bpo: 46820
.. date: 2022-02-21-21-55-23
.. nonce: 4RfUZh
.. section: Core and Builtins
Fix parsing a numeric literal immediately (without spaces) followed by "not
in" keywords, like in ``1not in x``. Now the parser only emits a warning,
not a syntax error.
..
.. bpo: 46329
.. date: 2022-02-21-10-29-20
.. nonce: cbkt7u
.. section: Core and Builtins
Move ``KW_NAMES`` before ``PRECALL`` instruction in call sequence. Change
``operand`` of ``CALL`` to match ``PRECALL`` for easier specialization.
..
.. bpo: 46808
.. date: 2022-02-20-23-10-14
.. nonce: vouNSF
.. section: Core and Builtins
Remove the ``NEXT_BLOCK`` macro from compile.c, and make the compiler
automatically generate implicit blocks when they are needed.
..
.. bpo: 46329
.. date: 2022-02-16-13-15-16
.. nonce: 8aIuz9
.. section: Core and Builtins
Add ``PUSH_NULL`` instruction. This is used as a prefix when evaluating a
callable, so that the stack has the same shape for methods and other calls.
``PRECALL_FUNCTION`` and ``PRECALL_METHOD`` are merged into a single
``PRECALL`` instruction.
There is no change in semantics.
..
.. bpo: 46762
.. date: 2022-02-15-20-26-46
.. nonce: 1H7vab
.. section: Core and Builtins
Fix an assert failure in debug builds when a '<', '>', or '=' is the last
character in an f-string that's missing a closing right brace.
..
.. bpo: 46730
.. date: 2022-02-14-21-04-43
.. nonce: rYJ1w5
.. section: Core and Builtins
Message of AttributeError caused by getting, setting or deleting a property
without the corresponding function now mentions that the attribute is in
fact a property and also specifies type of the class that it belongs to.
..
.. bpo: 46724
.. date: 2022-02-14-14-44-06
.. nonce: jym_K6
.. section: Core and Builtins
Make sure that all backwards jumps use the ``JUMP_ABSOLUTE`` instruction,
rather than ``JUMP_FORWARD`` with an argument of ``(2**32)+offset``.
..
.. bpo: 46732
.. date: 2022-02-12-11-16-40
.. nonce: 3Z_qxd
.. section: Core and Builtins
Correct the docstring for the :meth:`~object.__bool__` method. Patch by Jelle
Zijlstra.
..
.. bpo: 46072
.. date: 2022-02-11-13-47-58
.. nonce: PDS6Ke
.. section: Core and Builtins
Add more detailed specialization failure statistics for :opcode:`BINARY_OP`.
..
.. bpo: 46707
.. date: 2022-02-10-03-13-18
.. nonce: xeSEh0
.. section: Core and Builtins
Avoid potential exponential backtracking when producing some syntax errors
involving lots of brackets. Patch by Pablo Galindo.
..
.. bpo: 46323
.. date: 2022-02-10-02-29-12
.. nonce: HK_cs0
.. section: Core and Builtins
:mod:`ctypes` now allocates memory on the stack instead of on the heap to
pass arguments while calling a Python callback function. Patch by Donghee
Na.
..
.. bpo: 45923
.. date: 2022-02-09-20-21-43
.. nonce: tJ4gDX
.. section: Core and Builtins
Add a quickened form of :opcode:`RESUME` that skips quickening checks.
..
.. bpo: 46702
.. date: 2022-02-09-16-36-11
.. nonce: LcaEuC
.. section: Core and Builtins
Specialize :opcode:`UNPACK_SEQUENCE` for :class:`tuple` and :class:`list`
unpackings.
..
.. bpo: 46072
.. date: 2022-02-07-14-38-54
.. nonce: 6ebLyN
.. section: Core and Builtins
Opcode pair stats are now gathered with ``--enable-pystats``. Defining
``DYNAMIC_EXECUTION_PROFILE`` or ``DXPAIRS`` no longer has any effect.
..
.. bpo: 46675
.. date: 2022-02-07-14-33-45
.. nonce: ZPbdMp
.. section: Core and Builtins
Allow more than 16 items in a split dict before it is combined. The limit is
now 254.
..
.. bpo: 40479
.. date: 2022-02-06-23-08-30
.. nonce: zED3Zu
.. section: Core and Builtins
Add a missing call to ``va_end()`` in ``Modules/_hashopenssl.c``.
..
.. bpo: 46323
.. date: 2022-02-05-14-46-21
.. nonce: FC1OJg
.. section: Core and Builtins
Use :c:func:`PyObject_Vectorcall` while calling ctypes callback function.
Patch by Donghee Na.
..
.. bpo: 46615
.. date: 2022-02-04-04-33-18
.. nonce: puArY9
.. section: Core and Builtins
When iterating over sets internally in ``setobject.c``, acquire strong
references to the resulting items from the set. This prevents crashes in
corner-cases of various set operations where the set gets mutated.
..
.. bpo: 45828
.. date: 2022-01-27-14-20-18
.. nonce: kzk4fl
.. section: Core and Builtins
The bytecode compiler now attempts to apply runtime stack manipulations at
compile-time (whenever it is feasible to do so).
..
.. bpo: 30496
.. date: 2022-01-09-11-59-04
.. nonce: KvuuGT
.. section: Core and Builtins
Fixed a minor portability issue in the implementation of
:c:func:`PyLong_FromLong`, and added a fast path for single-digit integers
to :c:func:`PyLong_FromLongLong`.
..
.. bpo: 25707
.. date: 2022-03-05-09-43-53
.. nonce: gTlclP
.. section: Library
Fixed a file leak in :func:`xml.etree.ElementTree.iterparse` when the
iterator is not exhausted. Patch by Jacob Walls.
..
.. bpo: 46877
.. date: 2022-03-03-06-58-52
.. nonce: BKgjpD
.. section: Library
Export :func:`unittest.doModuleCleanups` in :mod:`unittest`. Patch by Kumar
Aditya.
..
.. bpo: 46848
.. date: 2022-03-01-01-16-13
.. nonce: BB01Fr
.. section: Library
For performance, use the optimized string-searching implementations from
:meth:`~bytes.find` and :meth:`~bytes.rfind` for :meth:`~mmap.find` and
:meth:`~mmap.rfind`.
..
.. bpo: 46736
.. date: 2022-02-24-01-49-38
.. nonce: NJcoWO
.. section: Library
:class:`~http.server.SimpleHTTPRequestHandler` now uses HTML5 grammar. Patch
by Donghee Na.
..
.. bpo: 44886
.. date: 2022-02-23-00-55-59
.. nonce: I40Mbr
.. section: Library
Inherit asyncio proactor datagram transport from
:class:`asyncio.DatagramTransport`.
..
.. bpo: 46827
.. date: 2022-02-22-15-08-30
.. nonce: hvj38S
.. section: Library
Support UDP sockets in :meth:`asyncio.loop.sock_connect` for selector-based
event loops. Patch by Thomas Grainger.
..
.. bpo: 46811
.. date: 2022-02-20-21-03-31
.. nonce: 8BxgdQ
.. section: Library
Make test suite support Expat >=2.4.5
..
.. bpo: 46252
.. date: 2022-02-20-12-59-46
.. nonce: KG1SqA
.. section: Library
Raise :exc:`TypeError` if :class:`ssl.SSLSocket` is passed to
transport-based APIs.
..
.. bpo: 46784
.. date: 2022-02-18-22-10-30
.. nonce: SVOQJx
.. section: Library
Fix libexpat symbols collisions with user dynamically loaded or statically
linked libexpat in embedded Python.
..
.. bpo: 46786
.. date: 2022-02-18-12-10-26
.. nonce: P0xRvS
.. section: Library
The HTML serialisation in xml.etree.ElementTree now writes ``embed``,
``source``, ``track`` and ``wbr`` as empty tags, as defined in HTML 5.
..
.. bpo: 39327
.. date: 2022-02-17-13-10-50
.. nonce: ytIT7Z
.. section: Library
:func:`shutil.rmtree` can now work with VirtualBox shared folders when
running from the guest operating-system.
..
.. bpo: 45390
.. date: 2022-02-17-11-00-16
.. nonce: sVhG6M
.. section: Library
Propagate :exc:`asyncio.CancelledError` message from inner task to outer
awaiter.
..
.. bpo: 46756
.. date: 2022-02-15-11-57-53
.. nonce: AigSPi
.. section: Library
Fix a bug in :meth:`urllib.request.HTTPPasswordMgr.find_user_password` and
:meth:`urllib.request.HTTPPasswordMgrWithPriorAuth.is_authenticated` which
allowed to bypass authorization. For example, access to URI
``example.org/foobar`` was allowed if the user was authorized for URI
``example.org/foo``.
..
.. bpo: 46737
.. date: 2022-02-15-07-39-43
.. nonce: 6Pnblt
.. section: Library
:func:`random.gauss` and :func:`random.normalvariate` now have default
arguments.
..
.. bpo: 46752
.. date: 2022-02-14-21-21-49
.. nonce: m6ldTm
.. section: Library
Add task groups to asyncio (structured concurrency, inspired by Trio's
nurseries). This also introduces a change to task cancellation, where a
cancelled task can't be cancelled again until it calls .uncancel().
..
.. bpo: 46724
.. date: 2022-02-11-20-41-17
.. nonce: eU52_N
.. section: Library
Fix :mod:`dis` behavior on negative jump offsets.
..
.. bpo: 46333
.. date: 2022-02-11-20-01-49
.. nonce: PMTBY9
.. section: Library
The :meth:`__repr__` method of :class:`typing.ForwardRef` now includes the
``module`` parameter of :class:`typing.ForwardRef` when it is set.
..
.. bpo: 46643
.. date: 2022-02-09-22-40-11
.. nonce: aBlIx1
.. section: Library
In :func:`typing.get_type_hints`, support evaluating stringified
``ParamSpecArgs`` and ``ParamSpecKwargs`` annotations. Patch by Gregory
Beauregard.
..
.. bpo: 45863
.. date: 2022-02-09-00-53-23
.. nonce: zqQXVv
.. section: Library
When the :mod:`tarfile` module creates a pax format archive, it will put an
integer representation of timestamps in the ustar header (if possible) for
the benefit of older unarchivers, in addition to the existing full-precision
timestamps in the pax extended header.
..
.. bpo: 46066
.. date: 2022-02-08-16-42-20
.. nonce: m32Hl0
.. section: Library
Deprecate kwargs-based syntax for :class:`typing.TypedDict` definitions. It
had confusing semantics when specifying totality, and was largely unused.
Patch by Jingchen Ye.
..
.. bpo: 46676
.. date: 2022-02-07-19-20-42
.. nonce: 3Aws1o
.. section: Library
Make :data:`typing.ParamSpec` args and kwargs equal to themselves. Patch by
Gregory Beauregard.
..
.. bpo: 46323
.. date: 2022-02-07-13-27-59
.. nonce: 7UENAj
.. section: Library
``ctypes.CFUNCTYPE()`` and ``ctypes.WINFUNCTYPE()`` now fail to create the
type if its ``_argtypes_`` member contains too many arguments. Previously,
the error was only raised when calling a function. Patch by Victor Stinner.
..
.. bpo: 46672
.. date: 2022-02-07-13-15-16
.. nonce: 4swIjx
.. section: Library
Fix ``NameError`` in :func:`asyncio.gather` when initial type check fails.
..
.. bpo: 46659
.. date: 2022-02-06-19-13-02
.. nonce: q-vNL9
.. section: Library
The :class:`calendar.LocaleTextCalendar` and
:class:`calendar.LocaleHTMLCalendar` classes now use
:func:`locale.getlocale`, instead of using :func:`locale.getdefaultlocale`,
if no locale is specified. Patch by Victor Stinner.
..
.. bpo: 46659
.. date: 2022-02-06-17-57-45
.. nonce: zTmkoQ
.. section: Library
The :func:`locale.getdefaultlocale` function is deprecated and will be
removed in Python 3.13. Use :func:`locale.setlocale`,
:func:`locale.getpreferredencoding(False) <locale.getpreferredencoding>` and
:func:`locale.getlocale` functions instead. Patch by Victor Stinner.
..
.. bpo: 46655
.. date: 2022-02-06-08-54-03
.. nonce: DiLzYv
.. section: Library
In :func:`typing.get_type_hints`, support evaluating bare stringified
``TypeAlias`` annotations. Patch by Gregory Beauregard.
..
.. bpo: 45948
.. date: 2022-02-05-18-22-05
.. nonce: w4mCnE
.. section: Library
Fixed a discrepancy in the C implementation of the
:mod:`xml.etree.ElementTree` module. Now, instantiating an
:class:`xml.etree.ElementTree.XMLParser` with a ``target=None`` keyword
provides a default :class:`xml.etree.ElementTree.TreeBuilder` target as the
Python implementation does.
..
.. bpo: 46626
.. date: 2022-02-03-10-22-42
.. nonce: r2e-n_
.. section: Library
Expose Linux's ``IP_BIND_ADDRESS_NO_PORT`` option in :mod:`socket`.
..
.. bpo: 46521
.. date: 2022-02-01-19-34-28
.. nonce: IMUIrs
.. section: Library
Fix a bug in the :mod:`codeop` module that was incorrectly identifying
invalid code involving string quotes as valid code.
..
.. bpo: 46571
.. date: 2022-02-01-11-21-34
.. nonce: L40xUJ
.. section: Library
Improve :func:`typing.no_type_check`.
Now it does not modify external classes and functions. We also now correctly
mark classmethods as not to be type checked.
..
.. bpo: 46400
.. date: 2022-01-30-15-16-12
.. nonce: vweUiO
.. section: Library
expat: Update libexpat from 2.4.1 to 2.4.4
..
.. bpo: 46556
.. date: 2022-01-27-23-20-30
.. nonce: tlpAgS
.. section: Library
Deprecate undocumented support for using a :class:`pathlib.Path` object as a
context manager.
..
.. bpo: 46534
.. date: 2022-01-26-18-06-08
.. nonce: vhzUM4
.. section: Library
Implement :pep:`673` :class:`typing.Self`. Patch by James Hilton-Balfe.
..
.. bpo: 46522
.. date: 2022-01-25-15-31-04
.. nonce: tYAlX4
.. section: Library
Make various module ``__getattr__`` AttributeErrors more closely match a
typical AttributeError
..
.. bpo: 46475
.. date: 2022-01-23-15-35-07
.. nonce: UCe18S
.. section: Library
Add :data:`typing.Never` and :func:`typing.assert_never`. Patch by Jelle
Zijlstra.
..
.. bpo: 46333
.. date: 2022-01-11-15-54-15
.. nonce: B1faiF
.. section: Library
The :meth:`__eq__` and :meth:`__hash__` methods of
:class:`typing.ForwardRef` now honor the ``module`` parameter of
:class:`typing.ForwardRef`. Forward references from different modules are
now differentiated.
..
.. bpo: 46246
.. date: 2022-01-07-13-27-53
.. nonce: CTLx32
.. section: Library
Add missing ``__slots__`` to ``importlib.metadata.DeprecatedList``. Patch by
Arie Bovenberg.
..
.. bpo: 46232
.. date: 2022-01-03-09-46-44
.. nonce: s0KlyI
.. section: Library
The :mod:`ssl` module now handles certificates with bit strings in DN
correctly.
..
.. bpo: 46195
.. date: 2021-12-30-21-38-51
.. nonce: jFKGq_
.. section: Library
:func:`typing.get_type_hints` no longer adds ``Optional`` to parameters with
``None`` as a default. This aligns to changes to PEP 484 in
https://github.com/python/peps/pull/689
..
.. bpo: 31369
.. date: 2021-12-27-18-28-44
.. nonce: b9yM94
.. section: Library
Add :class:`~re.RegexFlag` to ``re.__all__`` and documented it. Add
:data:`~re.RegexFlag.NOFLAG` to indicate no flags being set.
..
.. bpo: 45898
.. date: 2021-11-26-10-46-09
.. nonce: UIfhsb
.. section: Library
:mod:`ctypes` no longer defines ``ffi_type_*`` symbols in ``cfield.c``. The
symbols have been provided by libffi for over a decade.
..
.. bpo: 44953
.. date: 2021-08-19-09-29-43
.. nonce: 27ZyUd
.. section: Library
Calling ``operator.itemgetter`` objects and ``operator.attrgetter`` objects
is now faster due to use of the vectorcall calling convention.
..
.. bpo: 44289
.. date: 2021-06-02-19-47-46
.. nonce: xC5kuV
.. section: Library
Fix an issue with :meth:`~tarfile.is_tarfile` method when using *fileobj*
argument: position in the *fileobj* was advanced forward which made it
unreadable with :meth:`tarfile.TarFile.open`.
..
.. bpo: 44011
.. date: 2021-05-02-23-44-21
.. nonce: hd8iUO
.. section: Library
Reimplement SSL/TLS support in asyncio, borrow the implementation from
uvloop library.
..
.. bpo: 41086
.. date: 2020-06-23-01-50-24
.. nonce: YnOvpS
.. section: Library
Make the :class:`configparser.ConfigParser` constructor raise
:exc:`TypeError` if the ``interpolation`` parameter is not of type
:class:`!configparser.Interpolation`
..
.. bpo: 29418
.. date: 2020-03-31-20-53-11
.. nonce: 8Qa9cQ
.. section: Library
Implement :func:`inspect.ismethodwrapper` and fix :func:`inspect.isroutine`
for cases where methodwrapper is given. Patch by Hakan Çelik.
..
.. bpo: 14156
.. date: 2019-05-07-14-25-45
.. nonce: 0FaHXE
.. section: Library
argparse.FileType now supports an argument of '-' in binary mode, returning
the .buffer attribute of sys.stdin/sys.stdout as appropriate. Modes
including 'x' and 'a' are treated equivalently to 'w' when argument is '-'.
Patch contributed by Josh Rosenberg
..
.. bpo: 42238
.. date: 2022-02-03-11-24-59
.. nonce: yJcMa8
.. section: Documentation
``Doc/tools/rstlint.py`` has moved to its own repository and is now packaged
on PyPI as ``sphinx-lint``.
..
.. bpo: 46913
.. date: 2022-03-03-17-36-24
.. nonce: vxETIE
.. section: Tests
Fix test_faulthandler.test_sigfpe() if Python is built with undefined
behavior sanitizer (UBSAN): disable UBSAN on the faulthandler_sigfpe()
function. Patch by Victor Stinner.
..
.. bpo: 46760
.. date: 2022-02-16-10-38-18
.. nonce: O3ovJo
.. section: Tests
Remove bytecode offsets from expected values in test.test_dis module.
Reduces the obstacles to modifying the VM or compiler.
..
.. bpo: 46708
.. date: 2022-02-10-14-33-47
.. nonce: avLfCb
.. section: Tests
Prevent default asyncio event loop policy modification warning after
``test_asyncio`` execution.
..
.. bpo: 46678
.. date: 2022-02-07-12-40-45
.. nonce: zfOrgL
.. section: Tests
The function ``make_legacy_pyc`` in ``Lib/test/support/import_helper.py`` no
longer fails when ``PYTHONPYCACHEPREFIX`` is set to a directory on a
different device from where tempfiles are stored.
..
.. bpo: 46623
.. date: 2022-02-03-09-45-26
.. nonce: vxzuhV
.. section: Tests
Skip test_pair() and test_speech128() of test_zlib on s390x since they fail
if zlib uses the s390x hardware accelerator. Patch by Victor Stinner.
..
.. bpo: 46860
.. date: 2022-02-25-16-19-40
.. nonce: jfciLG
.. section: Build
Respect ``--with-suffix`` when building on case-insensitive file systems.
..
.. bpo: 46656
.. date: 2022-02-25-00-51-16
.. nonce: MD783M
.. section: Build
Building Python now requires a C11 compiler. Optional C11 features are not
required.
Patch by Victor Stinner.
..
.. bpo: 46656
.. date: 2022-02-06-14-04-20
.. nonce: ajJjkh
.. section: Build
Building Python now requires support for floating-point Not-a-Number (NaN):
remove the ``Py_NO_NAN`` macro. Patch by Victor Stinner.
..
.. bpo: 46640
.. date: 2022-02-04-21-26-50
.. nonce: HXUmQp
.. section: Build
Building Python now requires a C99 ``<math.h>`` header file providing a
``NAN`` constant, or the ``__builtin_nan()`` built-in function. Patch by
Victor Stinner.
..
.. bpo: 46608
.. date: 2022-02-02-11-26-46
.. nonce: cXH9po
.. section: Build
Exclude marshalled-frozen data if deep-freezing to save 300 KB disk space.
This includes adding a new ``is_package`` field to :c:struct:`_frozen`.
Patch by Kumar Aditya.
..
.. bpo: 40280
.. date: 2022-01-31-15-15-08
.. nonce: r1AYNW
.. section: Build
Fix wasm32-emscripten test failures and platform issues. - Disable syscalls
that are not supported or don't work, e.g. wait, getrusage, prlimit,
mkfifo, mknod, setres[gu]id, setgroups. - Use fd_count to count open fds. -
Add more checks for subprocess and fork. - Add workarounds for missing
_multiprocessing and failing socket.accept(). - Enable bzip2. - Disable
large file support. - Disable signal.alarm.
..
.. bpo: 46430
.. date: 2022-01-19-11-08-32
.. nonce: k403m_
.. section: Build
Intern strings in deep-frozen modules. Patch by Kumar Aditya.
..
.. bpo: 46744
.. date: 2022-03-04-00-24-55
.. nonce: tneWFr
.. section: Windows
The default all users install directory for ARM64 is now under the native
``Program Files`` folder, rather than ``Program Files (Arm)`` which is
intended for ARM (32-bit) files.
..
.. bpo: 46567
.. date: 2022-02-25-01-22-31
.. nonce: 37WEue
.. section: Windows
Adds Tcl and Tk support for Windows ARM64. This also adds IDLE to the
installation.
..
.. bpo: 46638
.. date: 2022-02-04-18-02-33
.. nonce: mSJOSX
.. section: Windows
Ensures registry virtualization is consistently disabled. For 3.10 and
earlier, it remains enabled (some registry writes are protected), while for
3.11 and later it is disabled (registry modifications affect all
applications).
..
.. bpo: 46630
.. date: 2022-02-03-15-47-53
.. nonce: tREOjo
.. section: IDLE
Make query dialogs on Windows start with a cursor in the entry box.
..
.. bpo: 45447
.. date: 2021-10-14-16-55-03
.. nonce: FhiH5P
.. section: IDLE
Apply IDLE syntax highlighting to ``.pyi`` files. Patch by Alex Waygood and
Terry Jan Reedy.
..
.. bpo: 46748
.. date: 2022-02-24-13-13-16
.. nonce: aG1zb3
.. section: C API
Python's public headers no longer import ``<stdbool.h>``, leaving code that
embeds/extends Python free to define ``bool``, ``true`` and ``false``.
..
.. bpo: 46836
.. date: 2022-02-23-16-13-17
.. nonce: ZYyPF_
.. section: C API
Move the :c:type:`PyFrameObject` type definition (``struct _frame``) to the
internal C API ``pycore_frame.h`` header file. Patch by Victor Stinner.
..
.. bpo: 45459
.. date: 2022-02-07-18-47-00
.. nonce: 0FCWM8
.. section: C API
Rename ``Include/buffer.h`` header file to ``Include/pybuffer.h`` to avoid
conflicts with projects having an existing ``buffer.h`` header file. Patch by
Victor Stinner.
..
.. bpo: 45412
.. date: 2022-02-06-20-14-21
.. nonce: XJVaGW
.. section: C API
Remove the ``HAVE_PY_SET_53BIT_PRECISION`` macro (moved to the internal C
API). Patch by Victor Stinner.
..
.. bpo: 46613
.. date: 2022-02-02-17-58-49
.. nonce: __ZdpH
.. section: C API
Added function :c:func:`PyType_GetModuleByDef`, which allows access to
module state when a method's defining class is not available.
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