3.13.0a4 - Cpython — ContextQMD

.. date: 2024-02-13-15-14-39 .. gh-issue: 115399 .. nonce: xT-scP .. release date: 2024-02-15 .. section: Security

Update bundled libexpat to 2.6.0

.. date: 2024-02-12-00-33-01 .. gh-issue: 115243 .. nonce: e1oGX8 .. section: Security

Fix possible crashes in :meth:collections.deque.index when the deque is concurrently modified.

.. date: 2024-02-14-23-50-55 .. gh-issue: 112087 .. nonce: H_4W_v .. section: Core and Builtins

For an empty reverse iterator for list will be reduced to :func:reversed. Patch by Donghee Na

.. date: 2024-02-12-17-18-26 .. gh-issue: 114570 .. nonce: BzwMlJ .. section: Core and Builtins

Add :exc:PythonFinalizationError exception. This exception derived from :exc:RuntimeError is raised when an operation is blocked during the :term:Python finalization <interpreter shutdown>. Patch by Victor Stinner.

.. date: 2024-02-07-18-04-36 .. gh-issue: 114695 .. nonce: o9wP5P .. section: Core and Builtins

Add :func:sys._clear_internal_caches, which clears all internal performance-related caches (and deprecate the less-general :func:sys._clear_type_cache function).

.. date: 2024-02-07-07-50-12 .. gh-issue: 114828 .. nonce: nSXwMi .. section: Core and Builtins

Fix compilation crashes in uncommon code examples using :func:super inside a comprehension in a class body.

.. date: 2024-02-07-00-18-42 .. gh-issue: 112069 .. nonce: jRDRR5 .. section: Core and Builtins

Adapt :class:set and :class:frozenset methods to Argument Clinic.

.. date: 2024-02-05-12-40-26 .. gh-issue: 115011 .. nonce: L1AKF5 .. section: Core and Builtins

Setters for members with an unsigned integer type now support the same range of valid values for objects that has a :meth:~object.__index__ method as for :class:int.

.. date: 2024-02-03-04-07-18 .. gh-issue: 114887 .. nonce: uLSFmN .. section: Core and Builtins

Changed socket type validation in :meth:~asyncio.loop.create_datagram_endpoint to accept all non-stream sockets. This fixes a regression in compatibility with raw sockets.

.. date: 2024-02-03-01-48-38 .. gh-issue: 114944 .. nonce: 4J5ELD .. section: Core and Builtins

Fixes a race between PyParkingLot_Park and _PyParkingLot_UnparkAll.

.. date: 2024-02-02-05-27-48 .. gh-issue: 113462 .. nonce: VMml8q .. section: Core and Builtins

Limit the number of versions that a single class can use. Prevents a few wayward classes using up all the version numbers.

.. date: 2024-02-01-23-43-49 .. gh-issue: 76763 .. nonce: o_2J6i .. section: Core and Builtins

The :func:chr builtin function now always raises :exc:ValueError for values outside the valid range. Previously it raised :exc:OverflowError for very large or small values.

.. date: 2024-02-01-18-16-52 .. gh-issue: 114806 .. nonce: wrH2J6 .. section: Core and Builtins

No longer specialize calls to classes, if those classes have metaclasses. Fixes bug where the __call__ method of the metaclass was not being called.

.. date: 2024-01-31-09-10-10 .. gh-issue: 107944 .. nonce: XWm1B- .. section: Core and Builtins

Improve error message for function calls with bad keyword arguments via getargs

.. date: 2024-01-25-18-50-49 .. gh-issue: 112529 .. nonce: IbbApA .. section: Core and Builtins

The free-threaded build no longer allocates space for the PyGC_Head structure in objects that support cyclic garbage collection. A number of other fields and data structures are used as replacements, including ob_gc_bits, ob_tid, and mimalloc internal data structures.

.. date: 2024-01-22-15-10-01 .. gh-issue: 114456 .. nonce: fBFEJF .. section: Core and Builtins

Lower the recursion limit under a debug build of WASI.

.. date: 2024-01-22-09-49-02 .. gh-issue: 114083 .. nonce: hf1-ku .. section: Core and Builtins

Compiler applies folding of LOAD_CONST with following instruction in a separate pass before other optimisations. This enables jump threading in certain circumstances.

.. date: 2024-01-21-17-29-32 .. gh-issue: 114388 .. nonce: UVGO4K .. section: Core and Builtins

Fix a :exc:RuntimeWarning emitted when assign an integer-like value that is not an instance of :class:int to an attribute that corresponds to a C struct member of :ref:type <PyMemberDef-types> T_UINT and T_ULONG. Fix a double :exc:RuntimeWarning emitted when assign a negative integer value to an attribute that corresponds to a C struct member of type T_UINT.

.. date: 2024-01-19-13-18-13 .. gh-issue: 114265 .. nonce: 7HAi-- .. section: Core and Builtins

Compiler propagates line numbers before optimization, leading to more optimization opportunities and removing the need for the guarantee_lineno_for_exits hack.

.. date: 2024-01-18-20-20-37 .. gh-issue: 112529 .. nonce: oVNvDG .. section: Core and Builtins

The free-threaded build now has its own thread-safe GC implementation that uses mimalloc to find GC tracked objects. It is non-generational, unlike the existing GC implementation.

.. date: 2024-01-17-23-39-20 .. gh-issue: 114050 .. nonce: Lnv1oq .. section: Core and Builtins

Fix segmentation fault caused by an incorrect format string in TypeError exception when more than two arguments are passed to int.

.. date: 2024-01-17-05-09-32 .. gh-issue: 112354 .. nonce: Run9ko .. section: Core and Builtins

The END_FOR instruction now pops only one value. This is to better support side exits in loops.

.. date: 2024-01-17-00-52-57 .. gh-issue: 113884 .. nonce: CvEjUE .. section: Core and Builtins

Make :class:queue.SimpleQueue thread safe when the GIL is disabled.

.. date: 2024-01-16-14-41-54 .. gh-issue: 114058 .. nonce: Cb2b8h .. section: Core and Builtins

Implement the foundations of the Tier 2 redundancy eliminator.

.. date: 2024-01-12-16-40-07 .. gh-issue: 113939 .. nonce: Yi3L-e .. section: Core and Builtins

frame.clear(): Clear frame.f_locals as well, and not only the fast locals. This is relevant once frame.f_locals was accessed, which would contain also references to all the locals.

.. date: 2024-01-11-22-58-45 .. gh-issue: 112050 .. nonce: hDuvDW .. section: Core and Builtins

Convert :class:collections.deque to use Argument Clinic.

.. date: 2024-01-08-21-57-41 .. gh-issue: 112050 .. nonce: qwgjx1 .. section: Core and Builtins

Make methods on :class:collections.deque thread-safe when the GIL is disabled.

.. date: 2023-12-24-03-25-28 .. gh-issue: 113464 .. nonce: dvjQmA .. section: Core and Builtins

Add an option (--enable-experimental-jit for configure-based builds or --experimental-jit for PCbuild-based ones) to build an experimental just-in-time compiler, based on copy-and-patch <https://fredrikbk.com/publications/copy-and-patch.pdf>_

.. date: 2023-12-22-13-21-39 .. gh-issue: 113055 .. nonce: 47xBMF .. section: Core and Builtins

Make interp->obmalloc a pointer. For interpreters that share state with the main interpreter, this points to the same static memory structure. For interpreters with their own obmalloc state, it is heap allocated. Add free_obmalloc_arenas() which will free the obmalloc arenas and radix tree structures for interpreters with their own obmalloc state.

.. date: 2023-06-06-19-09-00 .. gh-issue: 55664 .. nonce: vYYl0V .. section: Core and Builtins

Add warning when creating :class:type using a namespace dictionary with non-string keys. Patched by Daniel Urban and Furkan Onder.

.. date: 2023-05-16-06-52-34 .. gh-issue: 104530 .. nonce: mJnA0W .. section: Core and Builtins

Use native Win32 condition variables.

.. date: 2024-02-13-18-27-03 .. gh-issue: 115392 .. nonce: gle5tp .. section: Library

Fix a bug in :mod:doctest where incorrect line numbers would be reported for decorated functions.

.. date: 2024-02-11-20-23-36 .. gh-issue: 114563 .. nonce: RzxNYT .. section: Library

Fix several :func:format bugs when using the C implementation of :class:~decimal.Decimal: * memory leak in some rare cases when using the z format option (coerce negative 0) * incorrect output when applying the z format option to type F (fixed-point with capital NAN / INF) * incorrect output when applying the # format option (alternate form)

.. date: 2024-02-10-15-24-20 .. gh-issue: 102840 .. nonce: 4mnDq1 .. section: Library

Fix confused traceback when floordiv, mod, or divmod operations happens between instances of :class:fractions.Fraction and :class:complex.

.. date: 2024-02-09-07-20-16 .. gh-issue: 115165 .. nonce: yfJLXA .. section: Library

Most exceptions are now ignored when attempting to set the __orig_class__ attribute on objects returned when calling :mod:typing generic aliases (including generic aliases created using :data:typing.Annotated). Previously only :exc:AttributeError was ignored. Patch by Dave Shawley.

.. date: 2024-02-08-17-04-58 .. gh-issue: 112903 .. nonce: SN_vUs .. section: Library

Fix "issubclass() arg 1 must be a class" errors in certain cases of multiple inheritance with generic aliases (regression in early 3.13 alpha releases).

.. date: 2024-02-08-14-21-28 .. gh-issue: 115133 .. nonce: ycl4ko .. section: Library

Fix tests for :class:~xml.etree.ElementTree.XMLPullParser with Expat 2.6.0.

.. date: 2024-02-08-13-26-14 .. gh-issue: 115059 .. nonce: DqP9dr .. section: Library

:meth:io.BufferedRandom.read1 now flushes the underlying write buffer.

.. date: 2024-02-07-12-37-52 .. gh-issue: 79382 .. nonce: Yz_5WB .. section: Library

Trailing ** no longer allows to match files and non-existing paths in recursive :func:~glob.glob.

.. date: 2024-02-06-15-16-28 .. gh-issue: 67837 .. nonce: _JKa73 .. section: Library

Avoid race conditions in the creation of directories during concurrent extraction in :mod:tarfile and :mod:zipfile.

.. date: 2024-02-06-03-55-46 .. gh-issue: 115060 .. nonce: EkWRpP .. section: Library

Speed up :meth:pathlib.Path.glob by removing redundant regex matching.

.. date: 2024-02-05-16-48-06 .. gh-issue: 97928 .. nonce: JZCies .. section: Library

Partially revert the behavior of :meth:tkinter.Text.count. By default it preserves the behavior of older Python versions, except that setting wantobjects to 0 no longer has effect. Add a new parameter return_ints: specifying return_ints=True makes Text.count() always returning the single count as an integer instead of a 1-tuple or None.

.. date: 2024-02-04-13-17-33 .. gh-issue: 114628 .. nonce: WJpqqS .. section: Library

When csv.Error is raised when handling TypeError, do not print the TypeError traceback.

.. date: 2024-02-04-02-28-37 .. gh-issue: 85984 .. nonce: NHZVTQ .. section: Library

Added _POSIX_VDISABLE from C's <unistd.h> to :mod:termios.

.. date: 2024-02-03-17-54-17 .. gh-issue: 114965 .. nonce: gHksCK .. section: Library

Update bundled pip to 24.0

.. date: 2024-02-03-16-59-25 .. gh-issue: 114959 .. nonce: dCfAG2 .. section: Library

:mod:tarfile no longer ignores errors when trying to extract a directory on top of a file.

.. date: 2024-02-02-15-50-13 .. gh-issue: 114894 .. nonce: DF-dSd .. section: Library

Add :meth:array.array.clear.

.. date: 2024-02-01-10-19-11 .. gh-issue: 114071 .. nonce: vkm2G_ .. section: Library

Support tuple subclasses using auto() for enum member value.

.. date: 2024-01-31-20-07-11 .. gh-issue: 109475 .. nonce: lmTb9S .. section: Library

Fix support of explicit option value "--" in :mod:argparse (e.g. --option=--).

.. date: 2024-01-30-22-10-50 .. gh-issue: 49766 .. nonce: yulJL_ .. section: Library

Fix :class:~datetime.date-:class:~datetime.datetime comparison. Now the special comparison methods like __eq__ and __lt__ return :data:NotImplemented if one of comparands is :class:!date and other is :class:!datetime instead of ignoring the time part and the time zone or forcefully return "not equal" or raise :exc:TypeError. It makes comparison of :class:!date and :class:!datetime subclasses more symmetric and allows to change the default behavior by overriding the special comparison methods in subclasses.

.. date: 2024-01-30-15-34-08 .. gh-issue: 110190 .. nonce: Z5PQQX .. section: Library

Fix ctypes structs with array on Windows ARM64 platform by setting MAX_STRUCT_SIZE to 32 in stgdict. Patch by Diego Russo

.. date: 2024-01-28-19-40-40 .. gh-issue: 114678 .. nonce: kYKcJw .. section: Library

Ensure that deprecation warning for 'N' specifier in :class:~decimal.Decimal format is not raised for cases where 'N' appears in other places in the format specifier. Based on patch by Stefan Krah.

.. date: 2024-01-28-18-38-18 .. gh-issue: 70303 .. nonce: _Lt_pj .. section: Library

Return both files and directories from :meth:pathlib.Path.glob if a pattern ends with "**". Previously only directories were returned.

.. date: 2024-01-28-00-48-12 .. gh-issue: 109653 .. nonce: vF4exe .. section: Library

Improve import time of :mod:importlib.metadata and :mod:email.utils.

.. date: 2024-01-27-20-11-24 .. gh-issue: 113280 .. nonce: CZPQMf .. section: Library

Fix a leak of open socket in rare cases when error occurred in :class:ssl.SSLSocket creation.

.. date: 2024-01-26-16-46-21 .. gh-issue: 77749 .. nonce: NY_7TS .. section: Library

:meth:email.policy.EmailPolicy.fold now always encodes non-ASCII characters in headers if :attr:~email.policy.EmailPolicy.utf8 is false.

.. date: 2024-01-25-19-22-17 .. gh-issue: 83383 .. nonce: 3GwO9v .. section: Library

Synchronization of the :mod:dbm.dumb database is now no-op if there was no modification since opening or last synchronization. The directory file for a newly created empty :mod:dbm.dumb database is now created immediately after opening instead of deferring this until synchronizing or closing.

.. date: 2024-01-24-20-51-49 .. gh-issue: 91602 .. nonce: 8fOH8l .. section: Library

Add filter keyword-only parameter to :meth:sqlite3.Connection.iterdump for filtering database objects to dump. Patch by Mariusz Felisiak.

.. date: 2024-01-24-20-11-46 .. gh-issue: 112451 .. nonce: 7YrG4p .. section: Library

Prohibit subclassing pure-Python :class:datetime.timezone. This is consistent with C-extension implementation. Patch by Mariusz Felisiak.

.. date: 2024-01-24-17-25-18 .. gh-issue: 69893 .. nonce: PQq5fR .. section: Library

Add the :meth:!close method for the iterator returned by :func:xml.etree.ElementTree.iterparse.

.. date: 2024-01-23-23-13-47 .. gh-issue: 109653 .. nonce: KLBHmT .. section: Library

Reduce the import time of :mod:threading module by ~50%. Patch by Daniel Hollas.

.. date: 2024-01-23-21-20-40 .. gh-issue: 114492 .. nonce: vKxl5o .. section: Library

Make the result of :func:termios.tcgetattr reproducible on Alpine Linux. Previously it could leave a random garbage in some fields.

.. date: 2024-01-23-14-11-49 .. gh-issue: 114315 .. nonce: KeVdzl .. section: Library

Make :class:threading.Lock a real class, not a factory function. Add __new__ to _thread.lock type.

.. date: 2024-01-23-13-03-22 .. gh-issue: 100414 .. nonce: 5kTdU5 .. section: Library

Add :mod:dbm.sqlite3 as a backend to :mod:dbm, and make it the new default :mod:!dbm backend. Patch by Raymond Hettinger and Erlend E. Aasland.

.. date: 2024-01-23-11-04-21 .. gh-issue: 113267 .. nonce: xe_Pxe .. section: Library

Revert changes in :gh:106584 which made calls of TestResult methods startTest() and stopTest() unbalanced.

.. date: 2024-01-22-12-10-34 .. gh-issue: 75128 .. nonce: 4FGlRS .. section: Library

Ignore an :exc:OSError in :meth:asyncio.BaseEventLoop.create_server when IPv6 is available but the interface cannot actually support it.

.. date: 2024-01-22-11-43-38 .. gh-issue: 114423 .. nonce: 6mMoPH .. section: Library

_DummyThread entries in threading._active are now automatically removed when the related thread dies.

.. date: 2024-01-21-16-32-55 .. gh-issue: 114257 .. nonce: bCFld5 .. section: Library

Dismiss the :exc:FileNotFound error in :func:ctypes.util.find_library and just return None on Linux.

.. date: 2024-01-19-18-41-02 .. gh-issue: 114321 .. nonce: yj_Xw3 .. section: Library

Expose more platform specific constants in the :mod:fcntl module on Linux, macOS, FreeBSD and NetBSD.

.. date: 2024-01-19-15-48-06 .. gh-issue: 114328 .. nonce: hixxW3 .. section: Library

The :func:tty.setcbreak and new :func:tty.cfmakecbreak no longer clears the terminal input ICRLF flag. This fixes a regression introduced in 3.12 that no longer matched how OSes define cbreak mode in their stty(1) manual pages.

.. date: 2024-01-19-12-05-22 .. gh-issue: 114281 .. nonce: H5JQe4 .. section: Library

Remove type hints from Lib/asyncio/staggered.py. The annotations in the typeshed <https://github.com/python/typeshed>__ project should be used instead.

.. date: 2024-01-18-22-29-28 .. gh-issue: 101438 .. nonce: 1-uUi_ .. section: Library

Avoid reference cycle in ElementTree.iterparse. The iterator returned by ElementTree.iterparse may hold on to a file descriptor. The reference cycle prevented prompt clean-up of the file descriptor if the returned iterator was not exhausted.

.. date: 2024-01-18-10-07-52 .. gh-issue: 114198 .. nonce: lK4Iif .. section: Library

The signature for the __replace__ method on :mod:dataclasses now has the first argument named self, rather than obj.

.. date: 2024-01-17-18-53-51 .. gh-issue: 104522 .. nonce: 3NyDf4 .. section: Library

:exc:OSError raised when run a subprocess now only has filename attribute set to cwd if the error was caused by a failed attempt to change the current directory.

.. date: 2024-01-16-15-59-06 .. gh-issue: 114149 .. nonce: LJ8IPm .. section: Library

Enum: correctly handle tuple subclasses in custom __new__.

.. date: 2024-01-15-20-21-33 .. gh-issue: 83648 .. nonce: HzD_fY .. section: Library

Support deprecation of options, positional arguments and subcommands in :mod:argparse.

.. date: 2024-01-15-19-54-41 .. gh-issue: 114087 .. nonce: Xic5vY .. section: Library

Speed up dataclasses.asdict up to 1.35x.

.. date: 2024-01-15-18-42-44 .. gh-issue: 109534 .. nonce: wYaLMZ .. section: Library

Fix a reference leak in :class:asyncio.selector_events.BaseSelectorEventLoop when SSL handshakes fail. Patch contributed by Jamie Phan.

.. date: 2024-01-12-17-32-36 .. gh-issue: 79634 .. nonce: uTSTRI .. section: Library

Accept :term:path-like objects <path-like object> as patterns in :meth:pathlib.Path.glob and :meth:~pathlib.Path.rglob.

.. date: 2024-01-12-09-35-07 .. gh-issue: 112202 .. nonce: t_0V1m .. section: Library

Ensure that a :func:asyncio.Condition.notify call does not get lost if the awakened Task is simultaneously cancelled or encounters any other error.

.. date: 2024-01-11-20-47-49 .. gh-issue: 113951 .. nonce: AzlqFK .. section: Library

Fix the behavior of tag_unbind() methods of :class:tkinter.Text and :class:tkinter.Canvas classes with three arguments. Previously, widget.tag_unbind(tag, sequence, funcid) destroyed the current binding for sequence, leaving sequence unbound, and deleted the funcid command. Now it removes only funcid from the binding for sequence, keeping other commands, and deletes the funcid command. It leaves sequence unbound only if funcid was the last bound command.

.. date: 2024-01-11-15-10-53 .. gh-issue: 97959 .. nonce: UOj6d4 .. section: Library

Fix rendering class methods, bound methods, method and function aliases in :mod:pydoc. Class methods no longer have "method of builtins.type instance" note. Corresponding notes are now added for class and unbound methods. Method and function aliases now have references to the module or the class where the origin was defined if it differs from the current. Bound methods are now listed in the static methods section. Methods of builtin classes are now supported as well as methods of Python classes.

.. date: 2024-01-07-21-04-24 .. gh-issue: 113796 .. nonce: 6iNsCR .. section: Library

Add more validation checks in the :class:csv.Dialect constructor. :exc:ValueError is now raised if the same character is used in different roles.

.. date: 2024-01-05-16-27-34 .. gh-issue: 113732 .. nonce: fgDRXA .. section: Library

Fix support of :data:~csv.QUOTE_NOTNULL and :data:~csv.QUOTE_STRINGS in :func:csv.reader.

.. date: 2024-01-04-20-58-17 .. gh-issue: 113225 .. nonce: -nyJM4 .. section: Library

Speed up :meth:pathlib.Path.walk by using :attr:os.DirEntry.path where possible.

.. date: 2023-12-18-20-10-50 .. gh-issue: 89039 .. nonce: gqFdtU .. section: Library

When replace() method is called on a subclass of datetime, date or time, properly call derived constructor. Previously, only the base class's constructor was called.

Also, make sure to pass non-zero fold values when creating subclasses in various methods. Previously, fold was silently ignored.

.. date: 2023-12-09-23-31-17 .. gh-issue: 112919 .. nonce: S5k9QN .. section: Library

Speed-up :func:datetime.datetime.replace, :func:datetime.date.replace and :func:datetime.time.replace.

.. date: 2023-11-27-19-54-43 .. gh-issue: 59013 .. nonce: chpQ0e .. section: Library

Set breakpoint on the first executable line of the function, instead of the line of function definition when the user do break func using :mod:pdb

.. date: 2023-11-24-19-08-50 .. gh-issue: 112343 .. nonce: RarGFC .. section: Library

Improve handling of pdb convenience variables to avoid replacing string contents.

.. date: 2023-11-18-16-30-21 .. gh-issue: 112240 .. nonce: YXS0tj .. section: Library

Add option to calendar module CLI to specify the weekday to start each week. Patch by Steven Ward.

.. date: 2023-11-04-22-32-27 .. gh-issue: 111741 .. nonce: f1ufr8 .. section: Library

Recognise image/webp as a standard format in the :mod:mimetypes module.

.. date: 2023-10-27-19-24-58 .. gh-issue: 43457 .. nonce: 84lx9H .. section: Library

Fix the :mod:tkinter widget method :meth:!wm_attributes. It now accepts the attribute name without the minus prefix to get window attributes and allows to specify attributes and values to set as keyword arguments. Add new optional keyword argument return_python_dict: calling w.wm_attributes(return_python_dict=True) returns the attributes as a dict instead of a tuple. Calling w.wm_attributes() now returns a tuple instead of string if wantobjects was set to 0.

.. date: 2023-10-24-19-19-54 .. gh-issue: 82626 .. nonce: _hfLRf .. section: Library

Many functions now emit a warning if a boolean value is passed as a file descriptor argument.

.. date: 2023-10-19-02-08-12 .. gh-issue: 111051 .. nonce: 8h1Dpk .. section: Library

Added check for file modification during debugging with :mod:pdb

.. date: 2023-10-04-11-09-30 .. gh-issue: 110345 .. nonce: fZU1ud .. section: Library

Show the Tcl/Tk patchlevel (rather than version) in :meth:tkinter._test.

.. date: 2023-09-22-22-17-45 .. gh-issue: 38807 .. nonce: m9McRN .. section: Library

Fix race condition in :mod:trace. Instead of checking if a directory exists and creating it, directly call :func:os.makedirs with the kwarg exist_ok=True.

.. date: 2023-07-23-12-28-26 .. gh-issue: 75705 .. nonce: aB2-Ww .. section: Library

Set unixfrom envelope in :class:mailbox.mbox and :class:mailbox.MMDF.

.. date: 2023-06-29-14-26-56 .. gh-issue: 106233 .. nonce: Aqw2HI .. section: Library

Fix stacklevel in InvalidTZPathWarning during :mod:zoneinfo module import.

.. date: 2023-05-30-18-30-11 .. gh-issue: 105102 .. nonce: SnpK04 .. section: Library

Allow :class:ctypes.Union to be nested in :class:ctypes.Structure when the system endianness is the opposite of the classes.

.. date: 2023-05-08-09-30-00 .. gh-issue: 104282 .. nonce: h4c6Eb .. section: Library

Fix null pointer dereference in :func:lzma._decode_filter_properties due to improper handling of BCJ filters with properties of zero length. Patch by Radislav Chugunov.

.. date: 2023-05-06-04-57-10 .. gh-issue: 96471 .. nonce: C9wAU7 .. section: Library

Add :py:class:queue.Queue termination with :py:meth:~queue.Queue.shutdown.

.. date: 2023-04-08-11-41-07 .. gh-issue: 101599 .. nonce: PaWNFh .. section: Library

Changed argparse flag options formatting to remove redundancy.

.. date: 2023-03-15-03-21-18 .. gh-issue: 85984 .. nonce: Xaq6ZN .. section: Library

Add POSIX pseudo-terminal functions :func:os.posix_openpt, :func:os.grantpt, :func:os.unlockpt, and :func:os.ptsname.

.. date: 2023-03-08-00-02-30 .. gh-issue: 102512 .. nonce: LiugDr .. section: Library

When :func:os.fork is called from a foreign thread (aka _DummyThread), the type of the thread in a child process is changed to _MainThread. Also changed its name and daemonic status, it can be now joined.

.. date: 2022-07-31-01-24-40 .. gh-issue: 88569 .. nonce: eU0--b .. section: Library

Add :func:os.path.isreserved, which identifies reserved pathnames such as "NUL", "AUX" and "CON". This function is only available on Windows.

Deprecate :meth:!pathlib.PurePath.is_reserved.

.. bpo: 38364 .. date: 2019-10-05-22-56-50 .. nonce: sYTCWF .. section: Library

The inspect functions isgeneratorfunction, iscoroutinefunction, isasyncgenfunction now support functools.partialmethod wrapped functions the same way they support functools.partial.

.. date: 2024-02-12-12-26-17 .. gh-issue: 115233 .. nonce: aug6r9 .. section: Documentation

Fix an example for :class:~logging.LoggerAdapter in the Logging Cookbook.

.. date: 2024-01-17-11-40-03 .. gh-issue: 114123 .. nonce: LuueXf .. section: Documentation

Move the :mod:csv module docstring to the :mod:!csv module instead of reexporting it from the internal :mod:!_csv module, and remove __doc__ from csv.__all__.

Move :attr:!csv.__version__ to the :mod:!csv module instead of reexporting it from the internal :mod:!_csv module, and remove __version__ from csv.__all__.

.. date: 2024-02-02-13-18-55 .. gh-issue: 114099 .. nonce: C_ycWg .. section: Tests

Added test exclusions required to run the test suite on iOS.

.. date: 2023-06-02-05-04-15 .. gh-issue: 105089 .. nonce: KaZFtU .. section: Tests

Fix test.test_zipfile.test_core.TestWithDirectory.test_create_directory_with_write test in AIX by doing a bitwise AND of 0xFFFF on mode , so that it will be in sync with zinfo.external_attr

.. date: 2024-02-08-19-36-20 .. gh-issue: 115167 .. nonce: LB9nDK .. section: Build

Avoid vendoring vcruntime140_threads.dll when building with Visual Studio 2022 version 17.8.

.. date: 2024-02-08-17-38-56 .. gh-issue: 113632 .. nonce: y9KIGb .. section: Build

Promote WASI to a tier 2 platform and drop Emscripten from tier 3 in configure.ac.

.. date: 2024-02-07-08-23-48 .. gh-issue: 114099 .. nonce: XcEXEZ .. section: Build

configure and Makefile were refactored to accommodate framework builds on Apple platforms other than macOS.

.. date: 2024-02-01-20-08-11 .. gh-issue: 114875 .. nonce: x_2iZ9 .. section: Build

Add :c:func:!getgrent as a prerequisite for building the :mod:grp module.

.. date: 2024-02-08-21-37-22 .. gh-issue: 115049 .. nonce: X1ObpJ .. section: Windows

Fixes py.exe launcher failing when run as users without user profiles.

.. date: 2024-02-06-09-05-13 .. gh-issue: 115009 .. nonce: ShMjZs .. section: Windows

Update Windows installer to use SQLite 3.45.1.

.. date: 2024-02-05-16-53-12 .. gh-issue: 109991 .. nonce: YqjnDz .. section: Windows

Update Windows build to use OpenSSL 3.0.13.

.. date: 2024-02-01-14-35-05 .. gh-issue: 111239 .. nonce: SO7SUF .. section: Windows

Update Windows builds to use zlib v1.3.1.

.. date: 2024-01-23-00-05-05 .. gh-issue: 100107 .. nonce: lkbP_Q .. section: Windows

The py.exe launcher will no longer attempt to run the Microsoft Store redirector when launching a script containing a /usr/bin/env shebang

.. date: 2023-12-19-22-32-28 .. gh-issue: 112984 .. nonce: F7kFMl .. section: Windows

Adds free-threaded binaries to Windows installer as an optional component.

.. date: 2023-08-11-18-21-38 .. gh-issue: 89240 .. nonce: dtSOLG .. section: Windows

Allows :mod:multiprocessing to create pools of greater than 62 processes.

.. date: 2024-02-06-09-01-10 .. gh-issue: 115009 .. nonce: ysau7e .. section: macOS

Update macOS installer to use SQLite 3.45.1.

.. date: 2024-02-05-18-30-27 .. gh-issue: 109991 .. nonce: tun6Yu .. section: macOS

Update macOS installer to use OpenSSL 3.0.13.

.. date: 2024-01-23-11-35-26 .. gh-issue: 114490 .. nonce: FrQOQ0 .. section: macOS

Add Mach-O linkage support for :func:platform.architecture.

.. date: 2022-11-18-10-05-35 .. gh-issue: 87804 .. nonce: rhlDmD .. section: macOS

On macOS the result of os.statvfs and os.fstatvfs now correctly report the size of very large disks, in previous versions the reported number of blocks was wrong for disks with at least 2**32 blocks.

.. date: 2024-01-17-23-18-15 .. gh-issue: 96905 .. nonce: UYaxoU .. section: IDLE

In idlelib code, stop redefining built-ins 'dict' and 'object'.

.. date: 2023-04-25-03-01-23 .. gh-issue: 103820 .. nonce: LCSpza .. section: IDLE

Revise IDLE bindings so that events from mouse button 4/5 on non-X11 windowing systems (i.e. Win32 and Aqua) are not mistaken for scrolling.

.. date: 2024-02-14-15-58-13 .. gh-issue: 113516 .. nonce: TyIHWx .. section: Tools/Demos

Don't set LDSHARED when building for WASI.

.. date: 2024-02-05-19-00-32 .. gh-issue: 109991 .. nonce: yJSEkw .. section: Tools/Demos

Update GitHub CI workflows to use OpenSSL 3.0.13 and multissltests to use 1.1.1w, 3.0.13, 3.1.5, and 3.2.1.

.. date: 2024-02-05-02-45-51 .. gh-issue: 115015 .. nonce: rgtiDB .. section: Tools/Demos

Fix a bug in Argument Clinic that generated incorrect code for methods with no parameters that use the :ref:METH_METHOD | METH_FASTCALL | METH_KEYWORDS <METH_METHOD-METH_FASTCALL-METH_KEYWORDS> calling convention. Only the positional parameter count was checked; any keyword argument passed would be silently accepted.

.. date: 2024-02-05-17-11-15 .. gh-issue: 111140 .. nonce: WMEjid .. section: C API

Adds :c:func:PyLong_AsNativeBytes, :c:func:PyLong_FromNativeBytes and :c:func:PyLong_FromUnsignedNativeBytes functions.

.. date: 2024-01-31-15-43-35 .. gh-issue: 114685 .. nonce: n7aRmX .. section: C API

:c:func:PyBuffer_FillInfo now raises a :exc:SystemError if called with :c:macro:PyBUF_READ or :c:macro:PyBUF_WRITE as flags. These flags should only be used with the PyMemoryView_* C API.

.. date: 2024-01-29-12-13-24 .. gh-issue: 114685 .. nonce: B07RME .. section: C API

:c:func:PyObject_GetBuffer now raises a :exc:SystemError if called with :c:macro:PyBUF_READ or :c:macro:PyBUF_WRITE as flags. These flags should only be used with the PyMemoryView_* C API.

.. date: 2024-01-26-21-54-42 .. gh-issue: 114626 .. nonce: SKhbh_ .. section: C API

Add PyCFunctionFast and PyCFunctionFastWithKeywords typedefs (identical to the existing _PyCFunctionFast and _PyCFunctionFastWithKeywords typedefs, just without a leading _ prefix).

.. date: 2024-01-23-21-45-02 .. gh-issue: 114329 .. nonce: YRaBoe .. section: C API

Add :c:func:PyList_GetItemRef, which is similar to :c:func:PyList_GetItem but returns a :term:strong reference instead of a :term:borrowed reference.

.. date: 2023-11-16-02-07-48 .. gh-issue: 110850 .. nonce: DQGNfF .. section: C API

Add PyTime C API:

:c:type:PyTime_t type.
:c:var:PyTime_MIN and :c:var:PyTime_MAX constants.
:c:func:PyTime_AsSecondsDouble, :c:func:PyTime_Monotonic, :c:func:PyTime_PerfCounter, and :c:func:PyTime_Time functions.

Patch by Victor Stinner.

.. date: 2023-11-15-13-47-48 .. gh-issue: 112066 .. nonce: 22WsqR .. section: C API

Add :c:func:PyDict_SetDefaultRef: insert a key and value into a dictionary if the key is not already present. This is similar to :meth:dict.setdefault, but returns an integer value indicating if the key was already present. It is also similar to :c:func:PyDict_SetDefault, but returns a strong reference instead of a borrowed reference.