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Cpython v3.15.0a6

Cpython: v3.15.0a6 Release

Release date:
February 11, 2026
Previous version:
v3.15.0a5 (released January 14, 2026)
Magnitude:
5,172 Diff Delta
Contributors:
38 total committers
Data confidence:
Commits:
77 impacting commits

116 Features Released with v3.15.0a6

GH-126910: add test for manual frame unwinding
#144137
gh-144363: Update bundled libexpat to 2.7.4
#144365
gh-80620: Support negative timestamps on windows in `time.gmtime`, `time.localtime`, and `datetime` module
#143463
gh-142956: Update `tomllib` to parse TOML 1.1.0
#144243
gh-144415: Android testbed fixes
#142912
gh-83069: Use efficient event-driven `subprocess.Popen.wait()` on Linux / macOS / BSD
#144047
gh-144377: Clean up sqlite3 Connection's list of weakrefs to Cursor objects
#144378
gh-143572: Run 'python3-libraries' fuzzer in CI using CIFuzz
#143749
GH-143948: Explain graphlib's cycle-finding code
#143950
gh-74453: Deprecate os.path.commonprefix
#144436
gh-143831: Compare cells by identity in forward references
#143848
gh-143935: Email preserve parens when folding comments
#143936
gh-126014: test_makefile_test_folders: Ignore basically-empty directories
#140466
gh-144376: Only run 'address' fuzzer for python3-libraries
#144398
gh-144629: Add test for the PyFunction_GetAnnotations function
#144630
gh-143952: Fix asyncio tools to work with the new remote debugging API
#143954
gh-144194: Fix mmap failure check in perf_jit_trampoline.c
#143713
gh-142779: Initialize reserved field for proper padding
#142780
gh-144493: Improve error message in _overlapped.BindLocal()
#144495
Avoid TestNullDlsym hanging on HP-PA
#141011
Notify Sviat and Hugo of GHA changes through codeowners
#143945
gh-143001 Add @cpython_only to test_sys.test_current_frames
#144004
Fix UBSan error in _testcapi: correct create_attr_from_spec signature
#143097
gh-102809: No longer mention `Misc/gdbinit` in the code
#143980
gh-115231: fill __module__ for built-in staticmethods
#115232
gh-143635: Fix crash in `_Py_typing_type_repr`
#143670
Add Savannah to CODEOWNERS for WASI
#143847
gh-142434: Use ppoll() if available in select.poll
#143529
gh-80620: Fix test_time.test_gmtime() for 32-bit time_t
#143861
gh-143602: Fix duplicate buffer exports in io.BytesIO.write
#143629

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Top Contributors in v3.15.0a6

kangtastic
zooba
sethmlarson
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StanFromIreland
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