.. date: 2024-07-04-15-10-29 .. gh-issue: 121084 .. nonce: qxcd5d .. release date: 2024-07-18 .. section: Tests Fix test_typing random leaks. Clear typing ABC caches when running tests for refleaks (``-R`` option): call ``_abc_caches_clear()`` on typing abstract classes and their subclasses. Patch by Victor Stinner. .. .. date: 2024-07-03-14-41-00 .. gh-issue: 121160 .. nonce: LEtiTd .. section: Tests Add a test for :func:`readline.set_history_length`. Note that this test may fail on readline libraries. .. .. date: 2024-07-01-16-15-06 .. gh-issue: 121200 .. nonce: 4Pc-gc .. section: Tests Fix ``test_expanduser_pwd2()`` of ``test_posixpath``. Call ``getpwnam()`` to get ``pw_dir``, since it can be different than ``getpwall()`` ``pw_dir``. Patch by Victor Stinner. .. .. date: 2024-07-01-09-04-32 .. gh-issue: 121188 .. nonce: XbuTVa .. section: Tests When creating the JUnit XML file, regrtest now escapes characters which are invalid in XML, such as the chr(27) control character used in ANSI escape sequences. Patch by Victor Stinner. .. .. date: 2024-07-14-06-24-02 .. gh-issue: 57141 .. nonce: C3jhDh .. section: Library The *shallow* argument to :class:`filecmp.dircmp` (new in Python 3.13) is now keyword-only. .. .. date: 2024-07-13-06-23-24 .. gh-issue: 121245 .. nonce: RfOgf4 .. section: Library Simplify handling of the history file in ``site.register_readline()`` helper. The ``CAN_USE_PYREPL`` variable now will be initialized, when imported. Patch by Sergey B Kirpichev. .. .. date: 2024-07-03-07-25-21 .. gh-issue: 121332 .. nonce: Iz6FEq .. section: Library Fix constructor of :mod:`ast` nodes with custom ``_attributes``. Previously, passing custom attributes would raise a :py:exc:`DeprecationWarning`. Passing arguments to the constructor that are not in ``_fields`` or ``_attributes`` remains deprecated. Patch by Jelle Zijlstra. .. .. date: 2024-07-02-19-36-54 .. gh-issue: 121279 .. nonce: BltDo9 .. section: Library Avoid :exc:`NameError` for the :mod:`warnings` module when accessing the depracated atributes of the :mod:`importlib.abc` module. .. .. date: 2024-07-02-11-34-06 .. gh-issue: 121245 .. nonce: sSkDAr .. section: Library Fix a bug in the handling of the command history of the new :term:`REPL` that caused the history file to be wiped at REPL exit. .. .. date: 2024-06-29-05-08-59 .. gh-issue: 87744 .. nonce: rpF6Jw .. section: Library Fix waitpid race while calling :meth:`~asyncio.subprocess.Process.send_signal` in asyncio. Patch by Kumar Aditya. .. .. date: 2024-06-26-03-04-24 .. gh-issue: 121018 .. nonce: clVSc4 .. section: Library Fixed other issues where :class:`argparse.ArgumentParser` did not honor ``exit_on_error=False``. .. .. date: 2024-06-22-17-01-56 .. gh-issue: 120678 .. nonce: Ik8dCg .. section: Library Fix regression in the new REPL that meant that globals from files passed using the ``-i`` argument would not be included in the REPL's global namespace. Patch by Alex Waygood. .. .. date: 2024-06-21-12-00-16 .. gh-issue: 120782 .. nonce: LOE8tj .. section: Library Fix wrong references of the :mod:`datetime` types after reloading the module. .. .. date: 2024-06-21-06-37-46 .. gh-issue: 120713 .. nonce: WBbQx4 .. section: Library :meth:`datetime.datetime.strftime` now 0-pads years with less than four digits for the format specifiers ``%Y`` and ``%G`` on Linux. Patch by Ben Hsing .. .. date: 2024-06-07-10-10-32 .. gh-issue: 117983 .. nonce: NeMR9n .. section: Library Defer the ``threading`` import in ``importlib.util`` until lazy loading is used. .. .. date: 2024-05-20-13-48-37 .. gh-issue: 119189 .. nonce: dhJVs5 .. section: Library When using the ``**`` operator or :func:`pow` with :class:`~fractions.Fraction` as the base and an exponent that is not rational, a float, or a complex, the fraction is no longer converted to a float. .. .. date: 2024-05-07-17-38-53 .. gh-issue: 118714 .. nonce: XXKpVZ .. section: Library Allow ``restart`` in post-mortem debugging of :mod:`pdb`. Removed restart message when the user quits pdb from post-mortem mode. .. .. date: 2023-06-17-09-07-06 .. gh-issue: 105623 .. nonce: 5G06od .. section: Library Fix performance degradation in :class:`logging.handlers.RotatingFileHandler`. Patch by Craig Robson. .. .. date: 2024-07-16-16-57-03 .. gh-issue: 78889 .. nonce: U7ghFD .. section: IDLE Stop Shell freezes by blocking user access to non-method sys.stdout.shell attributes, which are all private. .. .. date: 2024-07-14-11-48-10 .. gh-issue: 121749 .. nonce: nxHoTk .. section: Documentation Fix documentation for :c:func:`PyModule_AddObjectRef`. .. .. date: 2024-06-05-12-36-18 .. gh-issue: 120012 .. nonce: f14DbQ .. section: Documentation Clarify the behaviours of :meth:`multiprocessing.Queue.empty` and :meth:`multiprocessing.SimpleQueue.empty` on closed queues. Patch by Bénédikt Tran. .. .. date: 2024-07-16-18-23-22 .. gh-issue: 121860 .. nonce: -FTauD .. section: Core and Builtins Fix crash when rematerializing a managed dictionary after it was deleted. .. .. date: 2024-07-15-20-41-06 .. gh-issue: 121814 .. nonce: oR2ixR .. section: Core and Builtins Fixed the SegFault when :c:func:`PyEval_SetTrace` is used with no Python frame on stack. .. .. date: 2024-07-15-20-03-29 .. gh-issue: 121295 .. nonce: w53ucI .. section: Core and Builtins Fix PyREPL console getting into a blocked state after interrupting a long paste .. .. date: 2024-07-15-16-26-32 .. gh-issue: 121794 .. nonce: fhBtiQ .. section: Core and Builtins Fix bug in free-threaded Python where a resurrected object could lead to a negative ref count assertion failure. .. .. date: 2024-07-13-12-27-31 .. gh-issue: 121657 .. nonce: wgOYLw .. section: Core and Builtins Improve the :exc:`SyntaxError` message if the user tries to use :keyword:`yield from ` outside a function. .. .. date: 2024-07-13-09-51-44 .. gh-issue: 121609 .. nonce: jWsE5t .. section: Core and Builtins Fix pasting of characters containing unicode character joiners in the new REPL. Patch by Marta Gomez Macias .. .. date: 2024-07-10-15-43-54 .. gh-issue: 117482 .. nonce: 5WYaXR .. section: Core and Builtins Unexpected slot wrappers are no longer created for builtin static types in subinterpreters. .. .. date: 2024-07-09-13-53-18 .. gh-issue: 121499 .. nonce: rpp7il .. section: Core and Builtins Fix a bug affecting how multi-line history was being rendered in the new REPL after interacting with the new screen cache. Patch by Pablo Galindo .. .. date: 2024-07-08-17-15-14 .. gh-issue: 121497 .. nonce: I8hMDC .. section: Core and Builtins Fix a bug that was preventing the REPL to correctly respect the history when an input hook was set. Patch by Pablo Galindo .. .. date: 2024-07-08-10-31-08 .. gh-issue: 121012 .. nonce: M5hHk- .. section: Core and Builtins Tier 2 execution now ensures that list iterators remain exhausted, once they become exhausted. .. .. date: 2024-07-08-02-24-55 .. gh-issue: 121439 .. nonce: jDHod3 .. section: Core and Builtins Allow tuples of length 20 in the freelist to be reused. .. .. date: 2024-07-04-23-38-30 .. gh-issue: 121368 .. nonce: m3EF9E .. section: Core and Builtins Fix race condition in ``_PyType_Lookup`` in the free-threaded build due to a missing memory fence. This could lead to ``_PyType_Lookup`` returning incorrect results on arm64. .. .. date: 2024-06-29-10-46-14 .. gh-issue: 121130 .. nonce: Rj66Xs .. section: Core and Builtins Fix f-strings with debug expressions in format specifiers. Patch by Pablo Galindo .. .. date: 2024-06-28-10-02-58 .. gh-issue: 121115 .. nonce: EeSLfc .. section: Core and Builtins :c:func:`PyLong_AsNativeBytes` no longer uses :meth:`~object.__index__` methods by default. The ``Py_ASNATIVEBYTES_ALLOW_INDEX`` flag has been added to allow it. .. .. date: 2024-07-09-15-55-20 .. gh-issue: 89364 .. nonce: yYYroI .. section: C API Export the :c:func:`PySignal_SetWakeupFd` function. Previously, the function was documented but it couldn't be used in 3rd party code. Patch by Victor Stinner. .. .. date: 2024-07-04-15-41-10 .. gh-issue: 113993 .. nonce: cLSiWV .. section: C API :c:func:`PyUnicode_InternInPlace` no longer prevents its argument from being garbage collected. Several functions that take ``char *`` are now documented as possibly preventing string objects from being garbage collected; refer to their documentation for details: :c:func:`PyUnicode_InternFromString`, :c:func:`PyDict_SetItemString`, :c:func:`PyObject_SetAttrString`, :c:func:`PyObject_DelAttrString`, :c:func:`PyUnicode_InternFromString`, and ``PyModule_Add*`` convenience functions. .. .. date: 2024-07-04-13-23-27 .. gh-issue: 113601 .. nonce: K3RLqp .. section: C API Removed debug build assertions related to interning strings, which were falsely triggered by stable ABI extensions. .. .. date: 2024-07-02-11-03-40 .. gh-issue: 112136 .. nonce: f3fiY8 .. section: C API Restore the private ``_PyArg_Parser`` structure and the private ``_PyArg_ParseTupleAndKeywordsFast()`` function, previously removed in Python 3.13 alpha 1. Patch by Victor Stinner. .. .. date: 2024-07-16-12-29-54 .. gh-issue: 120371 .. nonce: E7x858 .. section: Build Support WASI SDK 22 by explicitly skipping functions that are just stubs in wasi-libc. .. .. date: 2024-07-14-01-29-47 .. gh-issue: 121731 .. nonce: RMPGP3 .. section: Build Fix mimalloc compile error on GNU/Hurd .. .. date: 2024-07-08-14-01-17 .. gh-issue: 121487 .. nonce: ekHmpR .. section: Build Fix deprecation warning for ATOMIC_VAR_INIT in mimalloc. .. .. date: 2024-07-08-01-11-54 .. gh-issue: 121467 .. nonce: 3qWRQj .. section: Build Fix a Makefile bug that prevented mimalloc header files from being installed. .. .. date: 2024-07-02-20-16-09 .. gh-issue: 121103 .. nonce: TMef9j .. section: Build On POSIX systems, excluding macOS framework installs, the lib directory for the free-threaded build now includes a "t" suffix to avoid conflicts with a co-located default build installation. .. .. date: 2024-07-02-12-42-25 .. gh-issue: 120831 .. nonce: i3eIjg .. section: Build The default minimum iOS version was increased to 13.0. .. .. date: 2024-06-02-13-23-26 .. gh-issue: 113565 .. nonce: 8xBlId .. section: Build Improve :mod:`curses` and :mod:`curses.panel` dependency checks in :program:`configure`.