… in socket module (pythonGH-146248) (pythonGH-146274)

(cherry picked from commit c30fae4)

Co-authored-by: AN Long <aisk@users.noreply.github.com>

…pythonGH-145248) (pythonGH-146288)

(cherry picked from commit 97c725c)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

…ythonGH-145145) (pythonGH-146290)

(cherry picked from commit 161329c)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

… (pythonGH-146328)

pythongh-108907: ctypes: Document _type_ codes (pythonGH-145837)

Add `_SimpleCData._type_` docs.

Add type codes to the summary table.

Cross-link `struct`, `array`, and `ctypes`; throw in `numpy` too.
(Anyone wanting to add a code should be aware of those.)

Add `py_object`, and `VARIANT_BOOL` for completeness.
(cherry picked from commit 1114d7f)

Co-authored-by: Petr Viktorin <encukou@gmail.com>

…ython#146332) (python#146336)

pythongh-146197: Run -m test.pythoninfo on the Emscripten CI (python#146332)


(cherry picked from commit a57209e)

Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>

…ythonGH-139176) (pythonGH-144802)

To avoid duplicate content in the Enum HOWTO and
API documentation which is not automatically synced,
the section about supported __dunder__ and _sunder
names is moved from HOWTO to API docs.

See also python#136791
(cherry picked from commit 629a363)

Co-authored-by: Rafael Weingartner-Ortner <38643099+RafaelWO@users.noreply.github.com>

…l exception sequence is mutated (pythonGH-141736) (pythonGH-144445)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
Co-authored-by: Stan Ulbrych <89152624+StanFromIreland@users.noreply.github.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>

…tps (pythonGH-145304) (pythonGH-145322)

(cherry picked from commit 11eec7a)

Co-authored-by: indoor47 <indoor47@gmail.com>
Co-authored-by: Adam (indoor47) <adamai@agentmail.to>

…pythonGH-146126)

(cherry picked from commit 2c6afb9)

Co-authored-by: Bartosz Grabowski <58475557+bartosz-grabowski@users.noreply.github.com>

…nGH-146331)

(cherry picked from commit c94048b)

Co-authored-by: Hood Chatham <roberthoodchatham@gmail.com>
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Co-authored-by: Victor Stinner <vstinner@python.org>

…honGH-146214)

(cherry picked from commit 82a24a4)

Co-authored-by: Seth Michael Larson <seth@python.org>

…rst padded quad (pythonGH-145267) (pythonGH-146326)

Base64 decoder (see binascii.a2b_base64(), base64.b64decode(), etc)
no longer ignores excess data after the first padded quad in non-strict
(default) mode.  Instead, in conformance with RFC 4648, it ignores the
pad character, "=", if it is present before the end of the encoded data.
(cherry picked from commit 4561f64)

…le.h (pythonGH-131832) (pythonGH-146340)

(cherry picked from commit 59e2330)

Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>

…ythonGH-131821) (pythonGH-146339)

(cherry picked from commit cc8e6d2)

Co-authored-by: Chris Eibl <138194463+chris-eibl@users.noreply.github.com>

…ythonGH-144805) (pythonGH-145397)

(cherry picked from commit c9b96b1)

Co-authored-by: Łukasz Langa <lukasz@langa.pl>

…s docstring (pythonGH-145889) (pythonGH-146036)

The get_annotations() docstring incorrectly referred to the SOURCE
format, which was renamed to STRING during PEP 749 development.
(cherry picked from commit 2a0fa50)

Co-authored-by: wavebyrd <160968744+wavebyrd@users.noreply.github.com>
Co-authored-by: Carson Jones <carson@Carsons-MacBook-Pro.local>

…46347) (python#146349)

pythongh-146202: Create tmp_dir in regrtest worker (pythonGH-146347)

Create tmp_dir in libregrtest.worker since the directory can be
different than the --tempdir directory.
(cherry picked from commit bcff99c)

Co-authored-by: Victor Stinner <vstinner@python.org>

… for python 3.13 (pythonGH-140243) (pythonGH-146351)

(cherry picked from commit fae5761)

Co-authored-by: Parman Mohammadalizadeh <prmma23@gmail.com>
Co-authored-by: Łukasz Langa <lukasz@langa.pl>

…g module (pythonGH-146309) (python#146398)

(cherry picked from commit ae6adc9)

…ed strings (pythongh-146072) (python#146390)

Fix free-threading scaling bottleneck in sys.intern and `PyObject_SetAttr` by
avoiding the interpreter-wide lock when the string is already interned and
immortalized.

(cherry picked from commit 6009309)

…ythonGH-146384)

(cherry picked from commit 119fce7)

Co-authored-by: Petr Viktorin <encukou@gmail.com>

…lly (pythonGH-146375) (python#146411)

Dynamically allocates the port for the pyrepl browser test, so that multiple
tests can run at the same time. Also allows the pyrepl test to honor the
CROSS_BUILD_DIR environment variable.
(cherry picked from commit 2be147e)

pythonGH-145099) (python#146412)

Co-authored-by: clintonsteiner <47841949+clintonsteiner@users.noreply.github.com>

…pythonGH-146374) (python#146418)

pythongh-146358: Fix warnings.catch_warnings on Free Threading (pythonGH-146374)

catch_warnings now also overrides warnings.showwarning() on Free
Threading to support custom warnings.showwarning().
(cherry picked from commit 0055140)

Co-authored-by: Victor Stinner <vstinner@python.org>

…GH-146425) (pythonGH-146430)

Fix typo in 3.14 What's New tail call interpreter docs (pythonGH-146425)
(cherry picked from commit 4447f23)

Co-authored-by: johnthagen <johnthagen@users.noreply.github.com>

…honGH-146402) (python#146438)

pythongh-138573: Filter out failing math tests on Solaris (pythonGH-146402)
(cherry picked from commit 8e1469c)

Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>

… (python#146460)

pythongh-145633: Fix struct.pack('f') on s390x (pythonGH-146422)

Use PyFloat_Pack4() to raise OverflowError.
Add more tests on packing/unpacking floats.
(cherry picked from commit 8de70b3)

Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>

…thonGH-146319) (python#146468)

pythongh-146318: Document that signal.SIGSTOP is Unix-only (pythonGH-146319)
(cherry picked from commit e44993a)

Co-authored-by: Jonathan Dung <jonathandung@yahoo.com>

…et() (pythonGH-146173) (python#146473)

pythongh-146059: Call fast_save_leave() in pickle save_frozenset() (pythonGH-146173)

Add more pickle tests: test also nested structures.
(cherry picked from commit 5c0dcb3)

Co-authored-by: Victor Stinner <vstinner@python.org>