.. 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: Core and Builtins
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: Core and Builtins
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 ambiguious 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 `__ to
generate `OpenGraph metadata `__.
..
.. 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* ` 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