- Abstract base classes complement :term:`duck-typing` by providing a way to define interfaces when other techniques like :func:`hasattr` would be clumsy or subt…
+ Abstract base classes complement :term:`duck-typing` by providing a way to define interfaces when other techniques like :func:`hasattr` would be clumsy or subt…
  msgstr: کلاس‌های پایه‌ی انتزاعی با فراهم کردن روشی برای تعریف رابط‌ها، زمانی که تکنیک‌های دیگری مانند :func:`hasattr` دست‌وپاگیر یا به‌طور ضمنی نادرست هستند (برای مثال…

- :gh:`145615`: Fixed a memory leak in the :term:`free-threaded build` where mimalloc pages could become permanently unreclaimable until the owning thread exited.
+ :gh:`152125`: Fix a crash in the :term:`free-threaded build` where :c:func:`PyList_New` could leave a newly allocated list's item buffer pointer uninitialized …
  msgstr: :gh:`145615`: رفع یک نشتی حافظه در :term:`ساخت نخ‌آزاد <free-threaded build>` که در آن صفحات mimalloc ممکن بود تا زمان خروج نخ مالک، به طور دائم غیرقابل بازیاب…

virtual subclass
A class that :func:`issubclass` and :func:`isinstance` treat as a subclass of an :term:`abstract base class` even though it does not inherit from it.  A class …

:gh:`161693`: Fix a crash in :meth:`dict.setdefault` when called on an instance dictionary with a :class:`str` subclass key equal to an attribute name that is …
:gh:`159054`: Fixed a crash when an allocation failure occurred while compiling code containing cold blocks.
:gh:`158500`: :meth:`datetime.date.fromisoformat` now rejects strings with trailing characters after a basic-format date, such as ``'2020010112'``. The pure-Py…
:gh:`159643`: Fix :exc:`EOFError` raised by :mod:`tarfile` in stream mode with bz2, xz or zstd compression when reading past the end of the compressed data, fo…