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1. Commits on Oct 8, 2026

   • gh-158803: Fix crash in bytes.join() on a concurrently mutated list (#158910)

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     christianaurichzm

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2. Commits on Oct 5, 2026

   • gh-158585: Optimize bytes.join() for non-empty separator (#158689)

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     vstinner

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3. Commits on Sep 13, 2026

   • gh-156939: Update UTF-8 encoder for PyBytesWriter changes (#157383)

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     vstinner

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4. Commits on Aug 17, 2026

   • gh-150942: Optimize stringlib split/splitlines with _PyList_AppendTakeRef (gh-155922)

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     danielKim614

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     corona10

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5. Commits on Aug 14, 2026

   • gh-155742: Get PyBytes_AS_STRING() as `const char*` (#155751)

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     vstinner

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6. Commits on Jun 15, 2026

   • gh-146102: Fix type slot_bf_getbuffer() error handling (#151346)

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     vstinner

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7. Commits on Jun 11, 2026

   • gh-151295: Fix use-after-free in bytes.join()/bytearray.join() via re-entrant __buffer__ (GH-151296)

     tonghuaroot

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8. Commits on Mar 28, 2026

   • GH-145247: Use _PyTuple_FromPair[Steal] in Objects (#145884)

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     sergey-miryanov

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     vstinner

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9. Commits on Feb 22, 2026

   • gh-145092: Fix compiler warning for memchr() and wcschr() returning const pointer (GH-145093)

     heitbaum

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10. Commits on Oct 8, 2025

    • gh-139353: Rename formatter_unicode.c to unicode_formatter.c (#139723)

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      vstinner

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11. Commits on Sep 23, 2025

    • gh-129813, PEP 782: Use PyBytesWriter in utf8_encoder() (#138874)

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12. Commits on Aug 18, 2025

    • GH-137623: Use an AC decorator for docstring line length enforcement (#137690)

      AA-Turner

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13. Commits on Jul 13, 2025

    • gh-127971: fix off-by-one read beyond the end of a string during search (#132574)

      duaneg

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14. Commits on Apr 1, 2025

    • gh-111178: remove redundant casts for functions with correct signatures (#131673)

      picnixz

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15. Commits on Mar 27, 2025

    • gh-131525: Cache the result of tuple_hash (#131529)

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16. Commits on Mar 20, 2025

    • gh-111178: Fix function signatures for multiple tests (#131496)

      vstinner

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17. Commits on Feb 25, 2025

    • gh-87790: support thousands separators for formatting fractional part of floats (#125304)

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      skirpichev

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18. Commits on Nov 8, 2024

    • gh-122943: Add the varpos parameter in _PyArg_UnpackKeywords (GH-126564)

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      serhiy-storchaka

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19. Commits on Oct 9, 2024

    • gh-115754: Use Py_GetConstant(Py_CONSTANT_EMPTY_STR) (#125194)

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      vstinner

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20. Commits on Oct 8, 2024

    • gh-124502: Optimize unicode_eq() (#125105)

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21. Commits on Jun 27, 2024

    • gh-121040: Use __attribute__((fallthrough)) (#121044)

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      vstinner

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      sobolevn

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22. Commits on Jun 17, 2024

    • gh-120196: Reuse find_max_char() for bytes objects (#120497)

      rhpvorderman

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23. Commits on Jun 13, 2024

    • gh-120397: Optimize str.count() for single characters (#120398)

      rhpvorderman

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24. Commits on Jun 4, 2024

    • gh-119879: str.find(): Utilize last character gap for two-way periodic needles (#119880)

      

      d.grigonis

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25. Commits on May 28, 2024

    • gh-119396: Optimize unicode_repr() (#119617)

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      vstinner

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    • gh-117557: Improve error messages when a string, bytes or bytearray of length 1 are expected (GH-117631)

      serhiy-storchaka

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26. Commits on Apr 12, 2024

    • gh-117431: Adapt bytes and bytearray .find() and friends to Argument Clinic (#117502)

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      erlend-aasland

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      methane

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27. Commits on Oct 17, 2023

    • gh-110964: Remove private _PyArg functions (#110966)

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      vstinner

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28. Commits on Aug 31, 2023

    • gh-107603: Argument Clinic: Only include pycore_gc.h if needed (#108726)

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29. Commits on Aug 26, 2023

    • gh-106320: Remove private AC converter functions (#108505)

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      vstinner

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30. Commits on Aug 24, 2023

    • gh-108444: Argument Clinic uses PyLong_AsInt() (#108458)

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31. Commits on Jul 2, 2023

    • gh-106320: Add pycore_complexobject.h header file (#106339)

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32. Commits on Jun 1, 2023

    • gh-92536: Remove PyUnicode_READY() calls (#105210)

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      vstinner

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    • gh-105156: Cleanup usage of old Py_UNICODE type (#105158)

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33. Commits on Nov 22, 2022

    • gh-99537: Use Py_SETREF() function in C code (#99657)

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