Issues

• GH-158628: Implement sys._wasi_info

  awaiting core reviewOS-wasitype-feature
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  python/cpython#159039·brettcannon opened Oct 8, 2026 · Updated Oct 8, 2026
  2

  

• gh-159037: Improve performance of str.join pre-pass

  awaiting core reviewtype-feature
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  python/cpython#159038·eendebakpt opened Oct 8, 2026 · Updated Oct 9, 2026
  1

• gh-157710: Add more asserts to internal PyUnicode operations

  awaiting core reviewtype-feature
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  python/cpython#159033·encukou opened Oct 8, 2026 · Updated Oct 8, 2026
  3

• gh-156026: Add warning about link targets to tarfile.tar_filter

  awaiting core reviewdocsskip news
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  python/cpython#159019·encukou opened Oct 8, 2026 · Updated Oct 8, 2026
  1

• [3.15] gh-158592: Skip reallocation when shrinking a small list (GH-158787)

  awaiting core review
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  python/cpython#159001·corona10 opened Oct 8, 2026 · Updated Oct 8, 2026
  2

  

• gh-158929: Fix subinterpreter thread safety issues in syslog

  awaiting core reviewneeds backport to 3.14needs backport to 3.15topic-subinterpreters
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  python/cpython#159000·ZeroIntensity opened Oct 8, 2026 · Updated Oct 8, 2026
  2

• gh-158998: Fix os.statx() ignoring follow_symlinks=False

  awaiting core reviewneeds backport to 3.15
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  python/cpython#158999·jjhelmus opened Oct 7, 2026 · Updated Oct 8, 2026
  9

• gh-158975: Replace fixed sleeps in multiprocessing tests

  awaiting core reviewtests
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  python/cpython#158977·nascheme opened Oct 7, 2026 · Updated Oct 7, 2026

• gh-158948: Generate Modules/getbuildinfo.h

  awaiting core reviewskip news
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  python/cpython#158951·vstinner opened Oct 7, 2026 · Updated Oct 9, 2026
  28

• Fix @reap_threads usage in test_free_threading.test_json

  awaiting core reviewneeds backport to 3.15skip issueskip newsteststopic-free-threading
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  python/cpython#158937·vstinner opened Oct 6, 2026 · Updated Oct 6, 2026
  1

• Make Argument Clinic exit with an error if a warning was emitted

  awaiting core reviewskip issueskip news
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  python/cpython#158930·StanFromIreland opened Oct 6, 2026 · Updated Oct 6, 2026
  3

• gh-124697: avoid duplicate names in the same frame

  awaiting core reviewskip news
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  python/cpython#158924·iritkatriel opened Oct 6, 2026 · Updated Oct 8, 2026
  10

• gh-158918: Reduce C stack usage of _PyModule_IsPossiblyShadowing.

  awaiting core reviewneeds backport to 3.14needs backport to 3.15
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  python/cpython#158919·Yhg1s opened Oct 6, 2026 · Updated Oct 6, 2026

• [3.15] Restore deferred backports for 3.15.1, including GH-158874

  awaiting core reviewDO-NOT-MERGEskip issue
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  python/cpython#158882·pablogsal opened Oct 5, 2026 · Updated Oct 5, 2026
  1

• gh-158876: Update bundled Expat to 2.9.0

  awaiting core review
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  python/cpython#158881·StanFromIreland opened Oct 5, 2026 · Updated Oct 6, 2026
  1

• [3.15] gh-154062: Stop normalizing differential flamegraph duration (GH-154082)

  awaiting core review
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  python/cpython#158871·pablogsal opened Oct 5, 2026 · Updated Oct 5, 2026

• gh-158451: Optimize PyUnicode_Join()

  awaiting core reviewperformanceskip news
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  python/cpython#158693·vstinner opened Oct 4, 2026 · Updated Oct 5, 2026
  5

• Fix miscellaneous issues in the 'Configure Python' docs

  awaiting core reviewdocsskip issueskip news
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  python/cpython#158679·StanFromIreland opened Oct 3, 2026 · Updated Oct 3, 2026
  1

• gh-158194: Pin the type lock in PyType_Freeze()

  awaiting core reviewneeds backport to 3.14needs backport to 3.15topic-free-threadingtype-bug
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  python/cpython#158674·nascheme opened Oct 3, 2026 · Updated Oct 3, 2026
  1

• [3.15] gh-142083: Document the 'w' type code in the array.array docstring (#158040)

  awaiting core reviewneeds backport to 3.14
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  python/cpython#158575·vstinner opened Oct 1, 2026 · Updated Oct 1, 2026
  2

• gh-158494: zipimport: raise ZipImportError for corrupt deflate data

  awaiting core review
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  python/cpython#158498·Tony123-tech opened Sep 30, 2026 · Updated Oct 2, 2026
  6

• [3.15] gh-158219: Fix bytearray constructor to not use hashed object (#158329)

  awaiting core review
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  python/cpython#158397·vstinner opened Sep 29, 2026 · Updated Sep 29, 2026
  2

• gh-158370: Implement the context manager protocol for Interpreter objects

  awaiting core reviewtype-feature
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  python/cpython#158372·ZeroIntensity opened Sep 28, 2026 · Updated Oct 8, 2026
  5

• gh-158345: Don't grow an array when append, insert or extend overflows

  awaiting core review
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  python/cpython#158348·fedonman opened Sep 28, 2026 · Updated Oct 1, 2026
  4

• [3.15] gh-158102: Add tests for the slice C API (GH-158120)

  awaiting core reviewskip news
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  python/cpython#158291·serhiy-storchaka opened Sep 27, 2026 · Updated Sep 27, 2026
  1