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1. Commits on Oct 26, 2026

   • gh-160496: Clear inline values with atomic release stores (#160510)

     mpage

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2. Commits on Oct 24, 2026

   • gh-160588: Restore the gh-123022 check in the vendored mimalloc (#160589)

     devdavidejesus

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     34889afView commit details

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

     nascheme

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     00c5450View commit details

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   • gh-87613: Use AC vectorcall for weakref.ref() (#159470)

     eendebakpt

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     0dd6a4dView commit details

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   • gh-159244: Fix crash in dict() on a concurrently mutated key/value pair (#159245)

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     christianaurichzm

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3. Commits on Oct 23, 2026

   • gh-159294: Fix crash when creating an `ExceptionGroup` fails with `MemoryError` (#159295)

     christianaurichzm

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     2507a7fView commit details

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   • gh-159580: use _Py_INCREF_TYPE in object.__class__ (#160424)

     kumaraditya303

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     b1e32ffView commit details

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   • gh-87613: Allow Argument Clinic vectorcall on heap types (#160115)

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     cmaloney

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     claude

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     3fc4d1fView commit details

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   • gh-114258: Update Argument Clinic for ``__str__``. (gh-160402)

     corona10

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     4553849View commit details

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4. Commits on Oct 22, 2026

   • gh-158198: Fix crash when de-inlining dict while freeing owning object (#160114)

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     DinoV

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     03cb1adView commit details

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   • gh-159739: Keep descriptor metadata dictionaries alive during insertion (#160193)

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     jelle-openai

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     a076a55View commit details

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   • gh-159739: Protect list storage while reporting its size (#160196)

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     jelle-openai

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   • gh-159739: Propagate float rounding allocation failures (#160195)

     jelle-openai

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     3e7393bView commit details

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   • gh-149816: Fix race between `setattr` and `object.__dict__` update (#152296)

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     LindaSummer

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     60e956eView commit details

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   • gh-159739: Do not intern complex subclasses in code constants (#159980)

     jelle-openai

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     e67334aView commit details

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   • gh-159739: Release replaced type alias values (#160167)

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     jelle-openai

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   • gh-158304: Avoid creating StopIteration for every value yielded by an async generator (#158315)

     ashm-dev

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     ac430e3View commit details

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   • gh-114258: Use Argument Clinic for ``__hash__`` (gh-160059)

     corona10

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     3b3c692View commit details

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   • gh-159111: Add missing downstream changes when upgrade to 2.5.2. (gh-160207)

     corona10

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     9f3d506View commit details

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   • gh-160179: Leave bytearray empty when __init__() fails midway (GH-160180)

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     gpshead

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   • gh-160162: Fix crash in int left shift with huge count on 32-bit (GH-160163)

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     gpshead

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     d4750a7View commit details

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   • gh-114258: Use Argument Clinic for ``__getitem__`` (gh-160068)

     corona10

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     c1c4c18View commit details

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   • gh-159111: Update vendored mimalloc to v2.5.2 (gh-159112)

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     corona10

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5. Commits on Oct 21, 2026

   • gh-154318: Guard C recursion when hashing nested tuples and frozendicts (GH-154362)

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     gianghungtien

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     08500b0View commit details

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   • gh-114258: Use Argument Clinic for `__add__`/`__iadd__` (GH-160051)

     ZeroIntensity

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     5a17b2eView commit details

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   • gh-114258: Use Argument Clinic for `__mul__`/`__imul__` (GH-160049)

     ZeroIntensity

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     fe70b06View commit details

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   • gh-148268: Avoid debug assertion in specialized list compares (#148309)

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     officialasishkumar

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     StanFromIreland

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     a13d6dbView commit details

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   • gh-114258: Use Argument Clinic for `__repr__` (GH-160011)

     ZeroIntensity

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     65b7e94View commit details

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   • gh-114258: Use Argument Clinic for `__setitem__` (GH-160048)

     ZeroIntensity

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     796b26bView commit details

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   • gh-159739: Keep generic alias arguments alive while formatting errors (#159981)

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     jelle-openai

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     9c649dbView commit details

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   • gh-159739: Release weak proxy operands on errors (#159968)

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     jelle-openai

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     ebce4b7View commit details

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   • gh-159739: Break reference cycles involving property objects (#159978)

     jelle-openai

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     4101d59View commit details

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   • gh-114258: Update AC to support @critical_section for tp_iternext (gh-159962)

     corona10

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     f9c0e1eView commit details

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6. Commits on Oct 20, 2026

   • gh-159739: Fix crash in _PyTuple_Resize() with an invalid size (GH-159804)

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     gpshead

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     c360884View commit details

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

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     nascheme

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     4bb1dadView commit details

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