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Cpython v3.13.15

Cpython: v3.13.15 Release

Release date:
August 5, 2026
Previous version:
v3.13.14 (released June 10, 2026)
Magnitude:
10,571 Diff Delta
Contributors:
24 total committers
Data confidence:
Commits:
385 impacting commits

208 Features Released with v3.13.15

[3.13] gh-151126: Add missing `PyErr_NoMemory` in `_winapi.c` (GH-151588)
#152184
[3.13] gh-146531: Skip hanging `wm iconbitmap` test on macOS 26 Intel (GH-148032)
#153189
[3.13] gh-151126: Add missing `PyErr_NoMemory()` in `type_from_slots_or_spec` (GH-151582)
#152014
[3.13] gh-152682: Fix NULL dereference on OOM in `symtable_visit_type_param_bound_or_default` (GH-152684)
#152697
[3.13] gh-135142: update idlelib News3.txt for 9 issues (GH-152839)
#152844
[3.13] gh-68147: Fix RFC references in imaplib (GH-153126)
#153132
[3.13] gh-153444: Fix compile warning in `Modules/_interpchannelsmodule.c` (GH-153445)
#153449
[3.13] gh-151763: Fix crash in `_interpqueues.create` on `MemoryError` (GH-152131)
#152160
[3.13] gh-152052: Fix misleading `json` error for `\uXXXX` escape at the end of input (GH-152053)
#152285
[3.13] gh-152785: Upgrade Java from 17 to 21 in GHA Android (GH-152783)
#152922
[3.13] gh-152132: Close stderr_copy in test_api.test_run (GH-153591)
#153597
gh-89554: Document socket.SocketType as a class
#150683
[3.13] gh-150988: Fix refleak in `OSError` when attrs are set before `super().__init__()` (GH-150990)
#151242
[3.13] Move blurb entry to correct section.
#151270
[3.13] gh-151126: Fix missing memory errors in `_interpchannelsmodule.c` (GH-151239)
#151338
[3.13] gh-109940: Respect VIRTUAL_ENV_DISABLE_PROMPT in activate.bat (GH-151215) (GH-151263)
#151263
[3.13] gh-151112: Move an `assert` that may fail in `cfg_builder_check` (GH-151153)
#151315
[3.13] Fix typos in the `curses.ascii` module documentation (GH-129300)
#151415
[3.13] Docs: avoid repetitions of class references in functions.rst (GH-150891)
#151407
[3.13] gh-138991: Update dataclass documentation for new eq behavior in Python 3.13 (GH-139007)
#151374
[3.13] gh-151126: Fix missing memory error in `os._path_splitroot` (GH-151339)
#151362
[3.13] Docs: Fix method directive signatures in `enum` docs (GH-151429)
#151433
[3.13] gh-151403: Fix use-after-free when an argv item's __fspath__ mutates args (GH-151404)
#151447
[3.13] Add a new Sphinx `soft-deprecated` directive (GH-148630)
#148715
[3.13] gh-139837: Document attributes of objects recorded by warnings.catch_warnings (GH-139893) (GH-151473)
#151494
[3.13] gh-151522: Guard against None transport in slow-socket SSL test (GH-151523)
#151530
[3.13] gh-120665: make unittest loaders avoid loading test cases that are abstract base classes (GH-120666)
#151599
[3.13] gh-151623: Improve curses documentation style (GH-151635)
#151638
[3.13] gh-86726: Fix the documented return type of tkinter info_patchlevel() (GH-151655)
#151660
[3.13] gh-151427: add 'not macOS' and 'not iOS' restrictions on availability state of some functions in `os` module. (GH-151537)
#151697

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Top Contributors in v3.13.15

miss-islington
serhiy-storchaka
vstinner
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