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1. Commits on Oct 31, 2026

   • gh-160473: Improve performance of exception raise (#160476)

     eendebakpt

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   • gh-157746: Make PyErr_CheckSignals() cheap when no signal is pending (#157748)

     eendebakpt

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2. Commits on Oct 29, 2026

   • gh-160679: Сombine argument conversion loops (#160838)

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     ashm-dev

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3. Commits on Oct 28, 2026

   • Add CODEOWNERS for `Python/_strptime.c` (#160820)

     StanFromIreland

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     c71bf4dView commit details

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   • gh-160132: Reduce padding in _PyCfgBasicblock (#160149)

     ashm-dev

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     e354246View commit details

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4. Commits on Oct 27, 2026

   • gh-159652: Fix import lock leak when the C stack is nearly exhausted (GH-159660)

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     cjames23

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5. Commits on Oct 26, 2026

   • gh-160682: Track running function objects in free-threaded GC (#160707)

     vankudothuadhinaik

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   • Fix ignored error returns in `sys` initialization, `_ctypes` and `_interpchannels` (#160614)

     StanFromIreland

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     c5d0978View commit details

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6. Commits on Oct 25, 2026

   • gh-153568: Use a managed dict for AST nodes (#160616)

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     lysnikolaou

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   • gh-159188: Do not immortalize constants in compile() of an AST (GH-159198)

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     gpshead

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   • Remove obsolete and unused configure macros (#159513)

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     methane

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     emmatyping

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7. Commits on Oct 23, 2026

   • gh-157384: Unify `_Py_ext_module_loader_info` initialization (GH-157758)

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     encukou

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     itamaro

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   • gh-128883: Store ELF perf trampoline templates in read-only data (#160366)

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     zanieb

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     pablogsal

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   • gh-158252: Add a C implementation for `strptime` (#158253)

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     pganssle

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     StanFromIreland

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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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   • gh-114258: Update _ctypes and tokenize to use AC where it can be. (gh-160404)

     corona10

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   • gh-160368: Detect `sem_clockwait` at runtime on Linux (#160371)

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     zanieb

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8. Commits on Oct 22, 2026

   • gh-159493: insert super instructions after borrow analysis in compiler (GH-160032)

     kumaraditya303

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     4af1265View commit details

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   • gh-156399: Don't specialize LOAD_ATTR_MODULE for module subclasses (GH-156474)

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     skdas20

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   • gh-156780: Emscripten: support building CPython with static linking (#156781)

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     3 peopleauthored
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   • gh-159739: Preserve ContextVar cache updates from finalizers (#160197)

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     jelle-openai

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   • gh-132414: Make invalid command-line options visible in the error message (GH-157921)

     vasiliyk

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   • gh-159739: Hold the codec registry lock while unregistering (#160168)

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     jelle-openai

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   • gh-159739: Skip context watchers cleared during notification (#160164)

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     jelle-openai

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   • Fix unchecked `NULL` returns in several C modules (#160213)

     StanFromIreland

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   • gh-157194: Read the opcode atomically in the specializer (#157195)

     iamsharduld

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   • gh-151818: Fix double-free in _CALL_LIST_APPEND on allocation failure (#151826)

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     timurmamedov1

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

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     corona10

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9. Commits on Oct 21, 2026

   • gh-153014: Fix data race on the GC debug flag in free-threading builds (gh-153015)

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     tonghuaroot

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   • gh-159399: Fix crash in codecs.encode() on a concurrently unregistered codec (#159400)

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     christianaurichzm

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   • gh-125873: Improve error message when PYTHONHOME is invalid (#126027)

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     refeed

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     ambv

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     81518ceView commit details

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   • gh-159739: Fix reference and error handling in warnings (#159758)

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     jelle-openai

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   • gh-159739: Clear free-threaded GC worklists after early errors (#159979)

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     jelle-openai

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10. Commits on Oct 20, 2026

    • gh-159860: Adjust QSBR cache line size from 64 to 128 on AArch64 (gh-159862)

      gr4ph0s

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    • gh-159603: Call pthread_attr_init() in hardware_stack_limits() (#159857)

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      vstinner

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