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1. Commits on Feb 25, 2026

   • gh-145197: Fix JIT trace crash when recording function from cleared generator frame (GH-145220)

     cocolato

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2. Commits on Feb 24, 2026

   • gh-145122: Add _GUARD_NOS_ANY_DICT to prevent STORE_SUBSCR_DICT on frozendict (gh-145039)

     corona10

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3. Commits on Feb 19, 2026

   • GH-144651: Optimize the new uops added when recording values during tracing. (GH-144948)

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     markshannon

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4. Commits on Feb 18, 2026

   • gh-141510: Update specializer to support frozendict (gh-144949)

     corona10

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5. Commits on Feb 12, 2026

   • gh-142349: Implement PEP 810 - Explicit lazy imports (#142351)

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     4 peopleauthored
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6. Commits on Feb 10, 2026

   • gh-134584: Optimize `_BINARY_OP_SUBSCR_LIST_SLICE` (GH-144659)

     Sacul0457

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7. Commits on Feb 6, 2026

   • gh-144549: Fix tail calling interpreter on Windows for FT (GH-144550)

     Fidget-Spinner

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   • gh-139103: Improve namedtuple scaling in free-threaded build (gh-144332)

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     colesbury

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     vstinner

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8. Commits on Feb 5, 2026

   • GH-144179: Use recorded values to make optimizer more robust (GH-144437)

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     markshannon

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9. Commits on Feb 2, 2026

   • gh-139109: Replace `_CHECK_STACK_SPACE` with `_CHECK_STACK_SPACE_OPERAND` in JIT optiimizer (GH-144394)

     cocolato

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   • GH-144179: Add value recording to JIT tracing front-end (GH-144303)

     markshannon

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   • gh-144145: Revert PR#144122 for performance and potential bugs. (GH-144391)

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     cocolato

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10. Commits on Jan 30, 2026

    • gh-144145: Track nullness of properties in the Tier 2 JIT optimizer (GH-144122)

      cocolato

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11. Commits on Jan 27, 2026

    • gh-144289: Remove ENABLE_SPECIALIZATION_FT (gh-144290)

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      colesbury

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12. Commits on Jan 25, 2026

    • gh-143995: Eliminate redundant refcounting in the JIT from LOAD_ATTR_MODULE (GH-143996)

      aisk

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13. Commits on Jan 24, 2026

    • gh-144007: Eliminate redundant refcounting in the JIT for BINARY_OP (GH-144011)

      aisk

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14. Commits on Jan 23, 2026

    • gh-144005: Eliminate redundant refcounting in the JIT for BINARY_OP_EXTEND (#144006)

      aisk

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      2f42f83View commit details

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15. Commits on Jan 21, 2026

    • GH-138245: Perform boolean guards by testing a single bit, rather than a full pointer comparison. (GH-143810)

      markshannon

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16. Commits on Jan 18, 2026

    • gh-144012: Check null binary op extend (#144014)

      aisk

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17. Commits on Jan 16, 2026

    • GH-143493: Conform to spec for generator expressions while supporting virtual iterators (GH-143569)

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      markshannon

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18. Commits on Jan 14, 2026

    • gh-143123: Protect against recursive tracer calls/finalization (GH-143126)

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      Fidget-Spinner

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    • gh-138050: Use cold flag instead of warm flag in `MAKE_WARM` (GH-143827)

      cocolato

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      94dbce1View commit details

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19. Commits on Jan 12, 2026

    • gh-134584: Eliminate redundant refcounting in TO_BOOL_INT, TO_BOOL_LIST (GH-143759)

      reidenong

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      c556786View commit details

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    • gh-134584: Eliminate redundant refcounting from `_CONTAINS_{OP|OP_SET|OP_DICT}` (GH-143731)

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      Zheaoli

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    • gh-134584: JIT: Remove redundant refcount for _BINARY_OP_SUBSCR_DICT (GH-143724)

      caje731

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20. Commits on Jan 11, 2026

    • gh-134584: JIT: Remove redundant refcounting for UNARY_{INVERT|NEGATIVE} (GH-143704)

      Fidget-Spinner

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21. Commits on Jan 10, 2026

    • gh-143604: Hold strong reference to executor during JIT tracing (GH-143646)

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      Zheaoli

      and

      Fidget-Spinner

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22. Commits on Jan 9, 2026

    • gh-142764: Restore REPLACE_OPCODE_IF_EVALUATES_PURE optimization for some ops (GH-143335)

      Fidget-Spinner

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    • gh-143421: Allocate all JIT state in one go (GH-143626)

      Fidget-Spinner

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23. Commits on Jan 8, 2026

    • gh-142908: Don't use `DK_IS_UNICODE` in interpreter (gh-142909)

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      colesbury

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24. Commits on Jan 7, 2026

    • gh-143531: Use macro to check if PEP 523 is hooked (#143532)

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      DinoV

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25. Commits on Jan 6, 2026

    • gh-134584: Eliminate redundant refcounting from `TO_BOOL_STR` (GH-143417)

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      Zheaoli

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    • gh-142982: Specialize CALL_FUNCTION_EX (GH-143391)

      Fidget-Spinner

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    • gh-134584: Eliminate redundant refcounting in TO_BOOL_ALWAYS_TRUE (GH-143427)

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      reidenong

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      Fidget-Spinner

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26. Commits on Jan 4, 2026

    • gh-139757: Add BINARY_OP_SUBSCR_USTR_INT (GH-143389)

      chris-eibl

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