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1. Commits on Nov 11, 2026

   • gh-160303: Fix bytearray state after a failed del b[:n] (GH-160304)

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     gpshead

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     35e2c5aView commit details

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2. Commits on Nov 10, 2026

   • gh-151763: Fix crash in PyList_New() on allocation failure under low memory (#154019)

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     Abhi210

     and

     sergey-miryanov

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     acab532View commit details

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   • gh-161693: Fix crash in `dict.setdefault` with a `str` subclass key on a split-table dict (#161704)

     StanFromIreland

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     f66165cView commit details

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3. Commits on Nov 9, 2026

   • gh-158529: Prevent mimalloc calling system calls directly on Android (#158530)

     mhsmith

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     78407daView commit details

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   • gh-158525: Avoid reacquiring dict lock when copying in free-threaded build (#158535)

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     n1snt

     and

     kumaraditya303

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   • gh-122901: Speed up `str` creation from non-ASCII data with a branch-free `find_max_char()` (#122902)

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     3 peopleauthored
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4. Commits on Nov 8, 2026

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

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     nascheme

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   • gh-161625: Fix compiler warnings in 32-bit mode (#161631)

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     vstinner

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     eba2a21View commit details

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5. Commits on Nov 7, 2026

   • gh-161242: Use AC vectorcall for AttributeError, ImportError, NameError (#161462)

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     cmaloney

     and

     claude

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     f767423View commit details

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   • gh-160872: Keep PyLong "x_divrem" inner loop carry in 64 bits (#161156)

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     XiaohongGong

     and

     blurb-it[bot]

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   • gh-87613: Pass NULL for an empty **kwargs in Argument Clinic (#161382)

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     cmaloney

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     claude

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   • gh-160050: Use asymptotically faster divmod in `l_mod` for large integers (#160443)

     emirplus

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     63e7b18View commit details

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   • gh-161433: Identify the failing item when hashing tuples (#161496)

     localzet

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     bd83de6View commit details

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   • gh-161420: Process mimalloc's delayed frees on every generic malloc again (gh-161533)

     maikschulze

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     b8dd06fView commit details

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   • GH-159101: Fix UAF when tp_finalize changes the base class (#159888)

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     sergey-miryanov

     and

     ZeroIntensity

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6. Commits on Nov 6, 2026

   • gh-161242: Add a freelist for traceback objects (#161243)

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     eendebakpt

     and

     claude

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7. Commits on Nov 5, 2026

   • gh-158928: Fix overflow in bytearray.__init__ from an iterator (#158947)

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     cmaloney

     and

     claude

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     25181ceView commit details

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   • gh-156133: Add `PyUnstable_InterpreterFrame_GetLocal` (GH-156134)

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     guilhermeleobas

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     b5bffb9View commit details

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   • gh-157710: Add more asserts to internal PyUnicode operations (GH-159033)

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     encukou

     and

     vstinner

     authored
     3c1848dView commit details

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   • gh-161226: Fail if the hash is cached in _PyTuple_Resize() (#161293)

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     vstinner

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

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     5 peopleauthored
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8. Commits on Nov 4, 2026

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

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     nascheme

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   • gh-156443: Keep PyLong loop carries as twodigits in shifts (#157060)

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     3 peopleauthored
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   • gh-153410: Add `PyDict_AsFrozenDictAndClear` C-API (GH-153413)

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     sobolevn

     and

     vstinner

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     f25ee0eView commit details

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   • gh-159184: Do not intern NaN constants on the free-threaded build (GH-161276)

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     cmaloney

     and

     claude

     authored
     1db5966View commit details

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   • gh-160147: Optimize make_new_set_untracked() (#161191)

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     vstinner

     and

     eendebakpt

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     064180bView commit details

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9. Commits on Nov 2, 2026

   • gh-161127: Let compilers vectorize `v_complement()` (#161128)

     eendebakpt

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     e4dba41View commit details

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

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     nascheme

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10. Commits on Nov 1, 2026

    • gh-87613: Use AC and AC vectorcall for bool (#160791)

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      cmaloney

      and

      claude

      authored
      a7c0383View commit details

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    • gh-132042: Speed up slot lookup during class creation (#159479)

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      eendebakpt

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      claude

      authored
      efeeb6cView commit details

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11. Commits on Oct 31, 2026

    • regenerate clinic for sliceobject.c.h (#160997)

      kumaraditya303

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      ba3357cView commit details

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    • gh-160837: Fix asyncio call graph truncation at async generators (#160839)

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      msullivan

      and

      deadlovelll

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      f32067fView commit details

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    • gh-87613: Use AC vectorcall for slice() (#159471)

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      eendebakpt

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      07db3e9View commit details

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    • gh-135385: do not reserve inline values for attributes stored in slots (#156656)

      serhiy-storchaka

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      974a7f7View commit details

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12. Commits on Oct 30, 2026

    • gh-116477: Improve performance of `range()` when `start` is 0 and `step` is 1 (#116478)

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      4 peopleauthored
      32fe0ccView commit details

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