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1. Commits on Oct 25, 2026

   • gh-152631: Fix `ast.parse` on lazy imports with older `feature_version` (#152632)

     sobolevn

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2. Commits on Oct 23, 2026

   • gh-153568: Skip the expression precedence chain for single-token atoms (#153575)

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     pablogsal

     and

     lysnikolaou

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     b77cb89View commit details

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   • gh-153195: Allow splitting the PEG grammar into several files (#159917)

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     lysnikolaou

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3. Commits on Oct 22, 2026

   • gh-160284: Number each keyword once in the PEG generator (#160290)

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     lysnikolaou

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4. Commits on Oct 5, 2026

   • gh-153569: Simplify tokenizer state (#158124)

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     pablogsal

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5. Commits on Sep 25, 2026

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

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     skirpichev

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6. Commits on Sep 24, 2026

   • gh-152708: Fix AST generation asymmetry for unary positive in match statements (#152712)

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     3 peopleauthored
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7. Commits on Sep 16, 2026

   • gh-153568: Reduce parser allocations (#157374)

     pablogsal

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     d8a1072View commit details

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8. Commits on Sep 15, 2026

   • gh-153568: Reuse shared prefixes in generated parser rules (#157465)

     pablogsal

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     89fe985View commit details

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9. Commits on Sep 14, 2026

   • gh-153568: Share expression parsing with assignment targets (#157450)

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     pablogsal

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   • gh-153568: Make the parser's per-rule stack check an inline comparison (#153573)

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     pablogsal

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   • gh-153568: Stop re-walking memo lists when growing left-recursive rules (#153574)

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     pablogsal

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10. Commits on Jul 28, 2026

    • gh-154775: Don't accept duplicate plus sign when matching complex number (GH-154776)

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      encukou

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      johnslavik

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11. Commits on Jul 6, 2026

    • gh-153171: Produce specialized syntax errors for 'not' after an operator in more positions (GH-153175)

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      serhiy-storchaka

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      claude

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12. Commits on Jul 4, 2026

    • gh-150459: Fix `SyntaxError` message for `from x lazy import y` (#150877)

      sobolevn

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13. Commits on Jun 27, 2026

    • gh-146495: Improve `SyntaxError` message for `&&` and `||` operators (#150906)

      Aniketsy

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      0f501b9View commit details

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14. Commits on Apr 23, 2026

    • gh-145239: Accept unary plus literal pattern (#148566)

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      johnslavik

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15. Commits on Mar 13, 2026

    • gh-145783: Propagate errors raised in `NEW_TYPE_COMMENT` (#145784)

      StanFromIreland

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      e1c2246View commit details

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16. Commits on Feb 28, 2026

    • gh-145241: specialize SyntaxError for single trailing-comma with item (#145282)

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      pablogsal

      and

      johnslavik

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      09e8c38View commit details

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17. Commits on Feb 12, 2026

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

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      4 peopleauthored
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18. Commits on Jan 31, 2026

    • gh-143055: Implementation of PEP 798 (#143056)

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      adqm

      and

      JelleZijlstra

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19. Commits on Dec 11, 2025

    • gh-142236: Improve error location for missing comma in string concatenations (#142330)

      pablogsal

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      c433986View commit details

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20. Commits on Nov 27, 2025

    • gh-130396: Remove _Py_ReachedRecursionLimitWithMargin() function (#141951)

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      vstinner

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21. Commits on Oct 26, 2025

    • gh-138944: Fix `SyntaxError` message for invalid syntax following valid import-as statement (#138945)

      brianschubert

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22. Commits on Oct 24, 2025

    • gh-138857: Improve error message for `case` outside of `match` (#138858)

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      sobolevn

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      johnslavik

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      92c0c45View commit details

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23. Commits on Oct 22, 2025

    • gh-140253: Improve the syntax error from an ill-positioned double-star subpattern (#140254)

      johnslavik

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24. Commits on Sep 10, 2025

    • gh-138716: Fix `assert a := b` syntax error message (#138718)

      sobolevn

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      cf8f36fView commit details

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25. Commits on Sep 9, 2025

    • gh-136616: Improve `assert` syntax error messages (#136653)

      sobolevn

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      6bc65c3View commit details

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26. Commits on Aug 15, 2025

    • gh-137078: Fix keyword typo recognition when executed over files (#137079)

      pablogsal

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27. Commits on Jul 21, 2025

    • gh-132661: Disallow `Template`/`str` concatenation after PEP 750 spec update (#135996)

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      3 peopleauthored
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28. Commits on Jun 30, 2025

    • gh-135422: Fix regression in `SyntaxError` messages after #134036 (#135423)

      sobolevn

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29. Commits on Jun 10, 2025

    • gh-133157: remove usage of `_Py_NO_SANITIZE_UNDEFINED` in `Parser/pegen.c` (#134048)

      picnixz

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      754e7c9View commit details

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30. Commits on Jun 6, 2025

    • gh-134036: Improve error messages for invalid `raise` statements (#134077)

      sobolevn

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      0d9ccc8View commit details

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31. Commits on Jun 3, 2025

    • gh-135028: Increase parser MAXSTACK for nested parenthesis (#135031)

      vstinner

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32. Commits on May 17, 2025

    • gh-133999: Fix `except` parsing regression in 3.14 (#134035)

      sobolevn

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      84914adView commit details

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