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1. Commits on Nov 12, 2026

   • gh-161821: Fall back to lld for Clang LTO builds (gh-161822)

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   • gh-160397: Don't take the warnings lock when emitting a warning (#160401)

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2. Commits on Nov 10, 2026

   • gh-158194: Exercise type freezing in concurrent setattr deadlock test (#161655)

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3. Commits on Nov 8, 2026

   • Propagate errors from slot updates in type_setattro() (gh-161587)

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4. Commits on Nov 5, 2026

   • gh-127716: make memoryview thread-safe in free-threaded build (#156248)

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5. Commits on Nov 4, 2026

   • gh-159434: Avoid borrowed references in func_get_annotation_dict() (gh-159436)

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6. Commits on Nov 2, 2026

   • gh-158195: Do not hold the type lock during stop-the-world (gh-159972)

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7. Commits on Oct 29, 2026

   • gh-159136: Keep eval-frame recorded function names alive (gh-160836)

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8. Commits on Oct 28, 2026

   • gh-158975: Replace fixed sleeps in multiprocessing tests (gh-158977)

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9. Commits on Oct 24, 2026

   • gh-159564: Make weakref dereference lock-free. (#159578)

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10. Commits on Oct 20, 2026

    • gh-158197: Fix split dict iteration during concurrent deletion (gh-158686)

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11. Commits on Oct 17, 2026

    • gh-159136: Avoid stop-the-world when setting function name attributes (gh-159269)

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    • gh-158973: Reset the warnings lock after fork in the child (gh-158974)

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12. Commits on Oct 14, 2026

    • gh-159431: Handle immortal objects in _PyObject_XDecRefDelayed() (gh-159433)

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13. Commits on Aug 31, 2026

    • gh-155981: Store refleak deltas in arrays (gh-55982)

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14. Commits on Aug 21, 2026

    • gh-152754: Fix crash when an os.scandir iterator is shared between threads (gh-153462)

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15. Commits on Aug 18, 2026

    • gh-155978: Fix leak in update_slot_after_setattr() (#155979)

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16. Commits on Aug 15, 2026

    • gh-155519: fix data-race for Context.ctx_vars (#155522)

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    • gh-155400: Fix deadlock with type_lock_prevent_release() (#155401)

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    • gh-151377: Fix races updating type slots and subclasses (#155370)

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17. Commits on Aug 13, 2026

    • gh-155515: Use GC tracking for HAMT iterators (#155517)

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18. Commits on Aug 11, 2026

    • gh-155363: Fix QSBR slot leak on thread state creation failure (gh-155365)

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19. Commits on Aug 1, 2026

    • Add comments about _Py_LOCK_DONT_DETACH usage. (#153817)

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20. Commits on Jul 9, 2026

    • Use enums for pycore_uop_ids.h. (gh-153351)

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21. Commits on Jun 26, 2026

    • gh-152238: Revert gh-150490 and gh-152200. (gh-152232)

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22. Commits on May 30, 2026

    • gh-135898: Add section to free-threading howto about memory usage (#143279)

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23. Commits on May 28, 2026

    • Update `qsbr.md` doc to be more accurate (#148537)

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24. Commits on May 7, 2026

    • gh-148937: revert process RSS based GC deferral (#149475)

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25. Commits on Apr 12, 2026

    • gh-97032: avoid test_squeezer crash on macOS buildbots (gh-115508) (GH-148141)

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26. Commits on Apr 3, 2026

    • GH-147985: Use lock-free lookup in `PySet_Contains` (#147986)

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      kumaraditya303

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27. Commits on Jan 20, 2026

    • gh-144054: no deferred refcount for untracked (gh-144081)

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    • gh-144054: shutdown fix for deferred ref counting (GH-144055)

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28. Commits on Jan 17, 2026

    • gh-132657: Add maybe_enable_deferred_ref_count() (gh-142843)

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29. Commits on Dec 15, 2025

    • gh-132657: Use stronger memory ordering for so->mask. (gh-142735)

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30. Commits on Dec 14, 2025

    • Use threading.Event rather than boolean flag. (gh-142722)

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