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1. Commits on Oct 10, 2026

   • [3.15] gh-154937: Fix `_thread._shutdown()` racing with `_thread.start_joinable_thread` on `ThreadHandle.ident` (GH-155085) (GH-155123)

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     miss-islington

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     LindaSummer

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2. Commits on Jul 8, 2026

   • [3.15] gh-153292: Fix data race in `threading.RLock.__repr__` in FT builds (GH-153299) (#153314)

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     miss-islington

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     sobolevn

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3. Commits on Jul 3, 2026

   • [3.15] gh-152903: Change PCWSTR to PWSTR in GetThreadDescription() typedef (GH-152904) (#152943)

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     miss-islington

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     carlo-bramini

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4. Commits on May 24, 2026

   • [3.15] gh-150285: Fix too long docstrings in Argument Clinic code (GH-150338) (GH-150350)

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     serhiy-storchaka

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5. Commits on Apr 2, 2026

   • GH-145247: Use _PyTuple_FromPair in Modules (part 1) (#148000)

     sergey-miryanov

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6. Commits on Mar 24, 2026

   • gh-128341: Use _Py_ABI_SLOT in stdlib modules (#145770)

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     befeleme

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     vstinner

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7. Commits on Jan 9, 2026

   • gh-143191: Use _PyOS_MIN_STACK_SIZE in _thread.stack_size() (#143601)

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     vstinner

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8. Commits on Nov 12, 2025

   • GH-116946: revert eliminate the need for the GC in the `_thread.lock` and `_thread.RLock` (#141448)

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     kumaraditya303

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   • GH-116946: eliminate the need for the GC in the `_thread.lock` and `_thread.RLock` (#141268)

     sergey-miryanov

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9. Commits on Oct 1, 2025

   • gh-116946: partial revert gh-139073 for thread handle type (#139474)

     kumaraditya303

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   • gh-116946: remove unnecessary gc from immutable types (#139073)

     sergey-miryanov

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10. Commits on Sep 18, 2025

    • gh-136003: Skip non-daemon threads when exceptions occur during finalization (GH-139129)

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      ZeroIntensity

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    • gh-136003: Execute pre-finalization callbacks in a loop (GH-136004)

      ZeroIntensity

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11. Commits on Sep 15, 2025

    • gh-137017: Ensure `Thread.is_alive()` only returns False after the underlying OS thread exits (gh-137315)

      abdoulrasheed

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12. Commits on Sep 2, 2025

    • gh-138004: Fix setting a thread name on OpenIndiana (GH-138017)

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      jadonduff

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      serhiy-storchaka

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13. Commits on Sep 1, 2025

    • gh-138342: Use a common utility for visiting an object's type (GH-138343)

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      ZeroIntensity

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14. Commits on Aug 15, 2025

    • gh-137808: use argument clinic for `_thread.lock` and `_thread.RLock` (#137809)

      kumaraditya303

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15. Commits on Jul 22, 2025

    • Revert "gh-112068: C API: Add support of nullable arguments in PyArg_Parse (GH-121303)" (#136991)

      serhiy-storchaka

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16. Commits on Jul 12, 2025

    • gh-136549: Fix signature of threading.excepthook() (GH-136559)

      serhiy-storchaka

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17. Commits on Jul 1, 2025

    • gh-87135: threading.Lock: Raise rather than hang on Python finalization (GH-135991)

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      encukou

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18. Commits on Jun 30, 2025

    • gh-135607: remove null checking of weakref list in dealloc of extension modules and objects (#135614)

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19. Commits on May 28, 2025

    • gh-108512: Add and use new replacements for PySys_GetObject() (GH-111035)

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      serhiy-storchaka

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20. Commits on May 23, 2025

    • gh-134381: Fix RuntimeError when starting not-yet started Thread after fork (gh-134514)

      zangjiucheng

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21. Commits on May 22, 2025

    • gh-134322: Fix `repr(threading.RLock)` (#134389)

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      YvesDup

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    • gh-134323: Fix the new `threading.RLock.locked` method (#134368)

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      YvesDup

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      kumaraditya303

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22. Commits on May 19, 2025

    • gh-134087: enforce signature of `threading.RLock` (#134178)

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      picnixz

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23. Commits on Apr 28, 2025

    • gh-87135: Raise PythonFinalizationError when joining a blocked daemon thread (gh-130402)

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      encukou

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24. Commits on Apr 8, 2025

    • gh-112068: C API: Add support of nullable arguments in PyArg_Parse (GH-121303)

      serhiy-storchaka

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    • gh-115942: Add `locked` to several multiprocessing locks (#115944)

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25. Commits on Mar 24, 2025

    • gh-111178: Fix function signature for test_threading (#131663)

      vstinner

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26. Commits on Mar 21, 2025

    • gh-131238: Remove pycore_object_deferred.h from pycore_object.h (#131549)

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      vstinner

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    • gh-131268: Implement thread names on OpenBSD (#131528)

      xavierog

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27. Commits on Mar 17, 2025

    • GH-131238: More refactoring of core header files (GH-131351)

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      markshannon

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28. Commits on Mar 14, 2025

    • gh-111178: Fix function signatures to fix undefined behavior (#131191)

      vstinner

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29. Commits on Mar 13, 2025

    • gh-111178: Fix function signatures in misc files (#131180)

      vstinner

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