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1. Commits on Oct 1, 2026

   • gh-142349: Simplify lazy import resolution (#158282)

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   • Cleanup Python/getopt.c: add _PyOS_GetOpt structure (#158362)

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     vstinner

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   • gh-157468: Validate correct builtins used under JIT (GH-157766)

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     johng

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2. Commits on Sep 30, 2026

   • gh-157833: Fix specialized C calls with additional method flags (GH-157834)

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   • gh-158380: Fix the stack operand used by JIT dict access guards (GH-158381)

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   • gh-158451: Add _PyUnicodeWriter_FinishWithSize() test (#158481)

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   • gh-158451: Convert _PyUnicodeWriter_Prepare() to static inline function (#158466)

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   • gh-158451: Add _PyUnicodeWriter_SetBuffer() helper function (#158452)

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3. Commits on Sep 29, 2026

   • gh-158439: Add _PyUnicodeWriter.recheck_maxchar (#158442)

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   • gh-158219: Fix bytearray constructor to not use hashed object (#158329)

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     cmaloney

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4. Commits on Sep 28, 2026

   • gh-157649: Fix Py_CLEAR()/Py_SETREF() on C++ (#158070)

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5. Commits on Sep 27, 2026

   • gh-157407: Argument Clinic: parse positional-only `defining_class` methods without `_PyArg_Parser` (#157483)

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     claude

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   • gh-155496: Use Argument Clinic for more functions and methods (GH-158134)

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     serhiy-storchaka

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   • gh-138912: Bump magic number post GH-144820 (#158258)

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6. Commits on Sep 26, 2026

   • gh-138912: Add fast path for match class patterns without sub-patterns (#144820)

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     cdce8p

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     eendebakpt

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7. Commits on Sep 25, 2026

   • gh-151464: exclude '<>' token from tokenize output (#154854)

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     skirpichev

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   • gh-151518: Avoid STW starvation of attaching threads (#152826)

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     tpn

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   • gh-157212: Fix _Py_ThreadId() on Windows ARM64 with MinGW (gh-157253)

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   • gh-158080: Py_InitializeFromConfig() no longer exits Python (#158085)

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8. Commits on Sep 24, 2026

   • gh-154090: Store profiling mode and capture settings in binary profiles (GH-154105)

     pablogsal

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   • gh-155496: Use Argument Clinic for more functions of the _thread module (GH-155514)

     serhiy-storchaka

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   • gh-154757: No longer deprecate PyModule_GetFilename() (#158076)

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   • gh-158001: Remove global configuration variables from C API (#158020)

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   • gh-158001: Remove Py_SetProgramName() function (#158024)

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   • gh-154757: Remove deprecated PyEval_InitThreads() function (#158037)

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9. Commits on Sep 23, 2026

   • gh-124697: Represent inlined comprehensions as subscopes in the symbol table (#156819)

     iritkatriel

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   • gh-157838: Merge biased refcounts on behalf of detached threads (#157839)

     kumaraditya303

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   • gh-157407: Reduce code size of ast and unicodeobject (#157393)

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     methane

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     eendebakpt

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   • gh-148233: Add Py_HashBuffer() to the limited C API (#157966)

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10. Commits on Sep 22, 2026

    • gh-157526: Call `__instancecheck__` and `__subclasscheck__` without creating a bound method (#157670)

      kumaraditya303

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    • gh-157695: Rename HAVE_ICONV to _Py_HAVE_ICONV (#157821)

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11. Commits on Sep 21, 2026

    • gh-157710: Enable read-only optimization in PyUnicodeWriter (#157861)

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12. Commits on Sep 18, 2026

    • gh-157242: Add byteswriter_check_consistency() (#157723)

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    • gh-157710: Add _PyUnicodeWriter_CanWrite() function (#157712)

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13. Commits on Sep 17, 2026

    • gh-155742: Check singletons consistency at Python exit (#157572)

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      encukou

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