Issues

• 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-158973: Reset the warnings lock after fork in the child

  needs backport to 3.14needs backport to 3.15type-bug
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  python/cpython#158974·nascheme opened Oct 7, 2026 · Updated Oct 7, 2026·Draft

• 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

• gh-130698: Convert sys.ps1 and sys.ps2 to strings before PyREPL use

  awaiting mergeneeds backport to 3.14needs backport to 3.15type-bug
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  python/cpython#158828·edvilme opened Oct 5, 2026 · Updated Oct 7, 2026
  3

• gh-158197: Fix split dict iteration during concurrent deletion

  needs backport to 3.14needs backport to 3.15topic-free-threadingtype-bug
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  python/cpython#158686·nascheme opened Oct 3, 2026 · Updated Oct 3, 2026

• gh-158195: Defer critical section restoration after STW

  needs backport to 3.14needs backport to 3.15topic-free-threadingtype-bug
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  python/cpython#158678·nascheme 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-158529: Prevent mimalloc calling system calls directly on Android

  awaiting changesneeds backport to 3.14needs backport to 3.15OS-android
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  python/cpython#158530·mhsmith opened Sep 30, 2026 · Updated Oct 1, 2026
  3

• gh-158121: Preserve instruction events when line monitoring is disabled

  awaiting reviewneeds backport to 3.13needs backport to 3.14needs backport to 3.15
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  python/cpython#158456·limadog9 opened Sep 29, 2026 · Updated Oct 8, 2026
  9

• gh-158018: Factor out non-app-specific parts of the Android testbed

  awaiting reviewneeds backport to 3.13needs backport to 3.14needs backport to 3.15skip news
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  python/cpython#158019·mhsmith opened Sep 23, 2026 · Updated Sep 30, 2026
  4

• gh-83731: Test that isinstance() ignores tuple subclass methods

  awaiting mergeneeds backport to 3.13needs backport to 3.14needs backport to 3.15skip newstests
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  python/cpython#158000·vasiliyk opened Sep 23, 2026 · Updated Sep 24, 2026

• [3.15] gh-157628: regrtest: Only report a leak if all runs leak one FD (#157629)

  awaiting core reviewneeds backport to 3.13needs backport to 3.14
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  python/cpython#157753·vstinner opened Sep 18, 2026 · Updated Sep 18, 2026

• gh-67804: Do not let Undo delete output in the IDLE Shell

  awaiting core reviewneeds backport to 3.13needs backport to 3.14needs backport to 3.15
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  python/cpython#157697·serhiy-storchaka opened Sep 17, 2026 · Updated Sep 22, 2026
  1

• gh-86997: Fix IDLE widget colors in macOS dark mode

  awaiting core reviewneeds backport to 3.13needs backport to 3.14needs backport to 3.15
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  python/cpython#157679·serhiy-storchaka opened Sep 17, 2026 · Updated Sep 22, 2026
  1

• gh-58781: Do not exit IDLE if the user config directory cannot be created

  awaiting core reviewneeds backport to 3.13needs backport to 3.14needs backport to 3.15
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  python/cpython#157636·serhiy-storchaka opened Sep 16, 2026 · Updated Sep 27, 2026
  2

• gh-85604: Check IDLE theme colors at startup

  awaiting change reviewneeds backport to 3.13needs backport to 3.14needs backport to 3.15
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  python/cpython#157620·serhiy-storchaka opened Sep 16, 2026 · Updated Sep 16, 2026
  5

• [3.15] gh-156909: Fix AST.__repr__ call getting the _fields attribute (GH-157490)

  awaiting mergeneeds backport to 3.13needs backport to 3.14skip news
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  python/cpython#157596·johnslavik opened Sep 15, 2026 · Updated Sep 16, 2026
  1

• gh-157443: Track the argument of sys.unraisablehook in the GC

  awaiting core reviewneeds backport to 3.13needs backport to 3.14needs backport to 3.15
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  python/cpython#157447·serhiy-storchaka opened Sep 13, 2026 · Updated Sep 14, 2026
  1

• gh-122622: Add PyREPL simple_interact.statement_submitted_hook

  awaiting change reviewneeds backport to 3.14needs backport to 3.15topic-repltype-bug
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  python/cpython#157241·edvilme opened Sep 9, 2026 · Updated Oct 1, 2026
  15

• gh-75733: Show IDLE's trees in a ttk.Treeview

  awaiting core reviewneeds backport to 3.13needs backport to 3.14needs backport to 3.15
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  python/cpython#157029·serhiy-storchaka opened Sep 6, 2026 · Updated Sep 6, 2026
  1

• gh-156082: Do not run tests using the same machine-wide resource at once

  awaiting core reviewneeds backport to 3.13needs backport to 3.14needs backport to 3.15teststype-feature
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  python/cpython#156902·serhiy-storchaka opened Sep 3, 2026 · Updated Sep 13, 2026
  14

• gh-156784: unignore error port unreachable in proactor

  awaiting reviewneeds backport to 3.14needs backport to 3.15
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  python/cpython#156788·graingert opened Sep 1, 2026 · Updated Oct 7, 2026
  7

• gh-156568: Make zipapp archives executable with PathLike targets

  awaiting mergeneeds backport to 3.13needs backport to 3.14needs backport to 3.15
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  python/cpython#156569·eoan-ermine opened Aug 29, 2026 · Updated Sep 15, 2026
  13

• GH-155728: Untrack tuples while unmarshalling

  awaiting core reviewneeds backport to 3.14needs backport to 3.15
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  python/cpython#156423·sergey-miryanov opened Aug 26, 2026 · Updated Sep 9, 2026
  14