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Cpython v3.14.1

Cpython: v3.14.1 Release

Release date:
December 2, 2025
Previous version:
v3.14.0 (released October 7, 2025)
Magnitude:
1,389 Diff Delta
Contributors:
13 total committers
Data confidence:
Commits:
26 impacting commits

287 Features Released with v3.14.1

[3.14] Fix multiprocessing queue test_get() (GH-142024)
#142070
[3.14] gh-141994: Warn of XXE vulnerability in documentation of SAX feature `xml.sax.handler.feature_external_ges` (GH-141996)
#142072
[3.14] gh-87512: Fix `subprocess` using `timeout=` on Windows blocking with a large `input=` (GH-142058)
#142068
[3.14] gh-141473: Fix subprocess.Popen.communicate to send input to stdin upon a subsequent post-timeout call (GH-141477)
#142059
[3.14] gh-116008: Detect freed thread state in faulthandler (GH-141988)
#142013
gh-141909: Add `PyModuleDef_Slot` and earlier Py_mod_* constants to stable ABI manifest
#141910
[3.14] gh-125434: Display thread name in faulthandler on Windows
#142011
[3.14] gh-139653: Add PyUnstable_ThreadState_SetStackProtection() (GH-139668)
#141661
[3.14] gh-141004: Document `PyOS_mystr(n)icmp` (GH-141760)
#141947
[3.14] gh-141907: Better handle support for SHA3 for test_hashlib (GH-141908)
#141918
[3.14] gh-106318: Add examples for str.join() (GH-140315)
#141906
[3.14] gh-106318: Add example for str.format() (GH-137018)
#141904
[3.14] gh-106318: Add example for str.isascii() (GH-137558)
#141898
[3.14] gh-106318: Add example for str.isdecimal() (GH-137559)
#141893
[3.14] gh-106318: Add example for str.isalpha() (GH-137557)
#141901
[3.14] gh-135335: Simplify preload regression test using __main__ (GH-138686)
#141886
[3.14] gh-141865: Fix translation of strings in `changes.py` extension (GH-141882)
#141883
[3.14] gh-98552: Revert (unneeded, already done elsewhere) "flush std streams in the multiprocessing forkserver before fork (GH-141849)" (GH-141871)
#141872
[3.14] gh-98552: flush std streams in the multiprocessing forkserver before fork (GH-141849)
#141851
[3.14] GH-101100: Resolve reference warnings in library/stdtypes.rst (GH-138420)
#141855
[3.14] gh-101100: Fix sphinx warnings in `library/unittest.rst` (GH-140109)
#141853
[3.14] gh-141801: Use accessors for ASN1_STRING fields in libssl (GH-141802)
#141847
[3.14] gh-141612: improve `test_trampoline_works_with_forks` coverage (GH-141613)
#141824
[3.14] gh-141729: Doc PyTypeObject.tp_vectorcall grammar fix (GH-141730)
#141815
[3.14] Docs: Fix typo in socketserver documentation (GH-140956)
#141799
gh-141784: Fix _remote_debugging_module.c compilation on 32-bit Linux
#141796
[3.14] GH-137841: Open tzdata/zones file with UTF-8 encoding (GH-137872)
#141607
[3.14] gh-141489: Simplify closure/freevar iteration in `annotationlib._build_closure()` (GH-141490)
#141776
[3.14] Remove GvR from '_stdauthor' in Doc/conf.py (GH-141765)
#141767
[3.14] gh-141570: can_colorize: Expect fileno() to raise OSError, as documented (GH-141716)
#141747

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Top Contributors in v3.14.1

picnixz
efimov-mikhail
StanFromIreland
stefanor
jihugo
sergey-miryanov
cmaloney
hartwork
chris-eibl
brianschubert

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