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Cpython v3.14.3

Cpython: v3.14.3 Release

Release date:
February 3, 2026
Previous version:
v3.14.2 (released December 5, 2025)
Magnitude:
364 Diff Delta
Contributors:
12 total committers
Data confidence:
Commits:
21 impacting commits

196 Features Released with v3.14.3

[3.14] gh-142278: Add granular change detection for platforms in CI (GH-142350)
#142537
[3.14] gh-143572: Run 'python3-libraries' fuzzer in CI using CIFuzz (…
#143912
[3.14] Update pre-commit with zizmor and Ruff fixes (GH-143095)
#143102
[3.14] Bump GitHub Actions (GH-143757)
#143797
[3.14] gh-143189: fix insertdict() for non-Unicode key (GH-143285)
#143771
[3.14] gh-142776: Ensure fp file descriptor is closed on all code paths in import.c (GH-142777)
#142988
[3.14] gh-144376: Only run 'address' fuzzer for python3-libraries (GH-144398)
#144399
[3.14] gh-143331: Schedule to remove format "N" for Decimal (GH-143372)
#143476
[3.14] Notify Sviat of GHA changes through codeowners (GH-143945)
#144051
gh-143547: Fix PyErr_FormatUnraisable() fallback
#143557
gh-143602: Fix duplicate buffer exports in io.BytesIO.write
#143629
[3.14] gh-106318: Add examples for str.rindex() method (GH-143887)
#144421
[3.14] gh-142555: Fix null pointer dereference in array.__setitem__ via re-entrant __index__ (GH-142713)
#144396
[3.14] gh-144415: Android testbed fixes (GH-142912)
#144416
[3.14] gh-144348: annotationlib: fix test that relies on set ordering (GH-144359)
#144375
[3.14] gh-144380: Fix incorrect type check in `buffered_iternext()` (GH-144381)
#144389
[3.14] gh-144295: Fix data race in dict method lookup and global load (gh-144312)
#144346
[3.14] gh-142387: Reduce Android testbed API level to 33 (GH-144315)
#144317
[3.14] gh-144194: Fix mmap failure check in perf_jit_trampoline.c (GH-143713)
#144301
[3.14] gh-126014: test_makefile_test_folders: Ignore basically-empty directories (GH-140466)
#144269
[3.14] gh-101888: Add function.__builtins__ to ref documentation (GH-144174)
#144252
[3.14] gh-143928: Remove outdated comparison between pickle and marshal regarding recursion (GH-144025)
#144246
[3.14] gh-144100: Fix crash for POINTER(str) used in ctypes argtypes (GH-144108)
#144244
[3.14] gh-144169: Fix three crashes in AST objects with non-str kwargs (GH-144178)
#144227
[3.14] gh-144233: Fix typo in os.eventfd documentation (GH-144234)
#144238
[3.14] gh-142779: Initialize reserved field for proper padding (GH-142780)
#144159
[3.14] gh-144125: email: verify headers are sound in BytesGenerator
#144182
[3.14] gh-143237: Fix support of named pipes in the rotating logging handlers (GH-143259)
#143297
[3.14] gh-143935: Email preserve parens when folding comments (GH-143936)
#144034
[3.14] gh-135142: Initial 3.15 News3.txt entries (GH-144200)
#144201

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Top Contributors in v3.14.3

StanFromIreland
nascheme
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