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1. Commits on Oct 9, 2026

   • [3.15] gh-155503: Add more PyType C API tests (#155505) (#159085)

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2. Commits on May 5, 2026

   • gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)

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     encukou

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     ZeroIntensity

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3. Commits on May 4, 2026

   • gh-146063: Add PyObject_CallFinalizerFromDealloc() to the limited C API (#146172)

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4. Commits on Apr 16, 2026

   • GH-145668: Add FOR_ITER specialization for virtual iterators. Specialize GET_ITER. (GH-147967)

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     markshannon

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5. Commits on Apr 8, 2026

   • gh-145921: Add "_DuringGC" functions for tp_traverse (GH-145925)

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6. Commits on Apr 7, 2026

   • gh-146636: abi3t: Define Py_GIL_DISABLED but do not use it (GH-148142)

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     encukou

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7. Commits on Mar 23, 2026

   • gh-146175: Soft-deprecate outdated macros; convert internal usage (GH-146178)

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     encukou

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8. Commits on Mar 10, 2026

   • gh-145010: Fix Python.h compilation with -masm=intel (#145011)

     colesbury

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9. Commits on Nov 25, 2025

   • gh-139165: Make Py_SIZE, Py_IS_TYPE,Py_ SET_SIZE regular functions in stable ABI (GH-139166)

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     encukou

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10. Commits on Nov 5, 2025

    • gh-140550: Initial implementation of PEP 793 – PyModExport (GH-140556)

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11. Commits on Nov 2, 2025

    • gh-134786: raise error if `Py_TPFLAGS_MANAGED_WEAKREF` or `Py_TPFLAGS_MANAGED_DICT` is used without `Py_TPFLAGS_HAVE_GC` set (#135863)

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12. Commits on Oct 27, 2025

    • gh-140487: Fix Py_RETURN_NOTIMPLEMENTED in limited C API 3.11 (GH-140636)

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13. Commits on Sep 15, 2025

    • gh-137956: Guard against non-free-threaded extensions in free-threaded builds (GH-137957)

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14. Commits on Aug 26, 2025

    • gh-138143: Allow anonymous unions in public headers, using `_Py_ANONYMOUS` (GH-137283)

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      encukou

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15. Commits on Aug 25, 2025

    • gh-95245: Document Py_TPFLAGS_PREHEADER (GH-135861)

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      sergey-miryanov

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      ZeroIntensity

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16. Commits on Jul 12, 2025

    • gh-111506: Add _Py_OPAQUE_PYOBJECT to hide PyObject layout & related API (GH-136505)

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      encukou

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17. Commits on Jun 11, 2025

    • gh-127545: Add _Py_ALIGNED_DEF(N, T) and use it for PyObject (GH-135209)

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18. Commits on Jun 5, 2025

    • gh-134989: Fix Py_RETURN_NONE in the limited C API (GH-135165)

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19. Commits on May 28, 2025

    • gh-127266: avoid data races when updating type slots (gh-133177)

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      nascheme

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20. Commits on Apr 29, 2025

    • Revert gh-127266: avoid data races when updating type slots (gh-131174) (gh-133129)

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21. Commits on Apr 28, 2025

    • gh-127266: avoid data races when updating type slots (gh-131174)

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22. Commits on Mar 10, 2025

    • GH-127705: Use `_PyStackRef`s in the default build. (GH-127875)

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23. Commits on Mar 4, 2025

    • gh-129666: Add C11/C++11 to docs and -pedantic-errors to GCC/clang test_c[pp]ext tests (GH-130692)

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24. Commits on Dec 11, 2024

    • GH-125174: Mark objects as statically allocated. (#127797)

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25. Commits on Oct 25, 2024

    • gh-121654: Add PyType_Freeze() function (#122457)

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26. Commits on Oct 16, 2024

    • gh-125444: Fix illegal instruction for older Arm architectures (#125574)

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27. Commits on Oct 10, 2024

    • GH-125174: Make immortal objects more robust, following design from PEP 683 (GH-125251)

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28. Commits on Sep 27, 2024

    • gh-124609: Fix _Py_ThreadId for Windows builds using MinGW (#124663)

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29. Commits on Sep 18, 2024

    • gh-124153: Implement `PyType_GetBaseByToken()` and `Py_tp_token` slot (GH-124163)

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30. Commits on Jul 10, 2024

    • gh-120198: Stop the world when setting __class__ on free-threaded build (GH-120672)

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31. Commits on Jun 20, 2024

    • gh-117511: Make PyMutex public in the non-limited API (#117731)

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32. Commits on Jun 19, 2024

    • GH-119462: Enforce invariants of type versioning (GH-120731)

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33. Commits on Jun 18, 2024

    • gh-120600: Make Py_TYPE() opaque in limited C API 3.14 (#120601)

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34. Commits on Jun 17, 2024

    • gh-83754: Use the Py_TYPE() macro (#120599)

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35. Commits on Jun 15, 2024

    • gh-117657: Make PyType_HasFeature (exported version) atomic (#120484)

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