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Commits on May 16, 2026

• gh-149816: Fix a race condition in `_PyBytes_FromList` with free-threading (#149909)

  sobolevn

  authored
  46afba7

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Commits on May 15, 2026

• gh-149816: Fix race condition in `memoryview` with free-threading (#149858)

  sobolevn

  authored
  1fdf033

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Commits on May 13, 2026

• gh-148461: Use arc4random_buf() in mimalloc on Cygwin (#148462)

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  carlo-bramini

  authored
  fdf064c

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• gh-148906: fix performance scaling of descriptors on free-threading (#148915)

  kumaraditya303

  authored
  94bca40

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Commits on May 12, 2026

• gh-149595: Remove the `sys._enablelegacywindowsfsencoding()` function (#149596)

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  StanFromIreland

  and

  hugovk

  authored
  6a0be13

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• gh-149676: Fix hash(frozendict | frozendict) (#149675)

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  KowalskiThomas

  and

  vstinner

  authored
  f5fb491

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Commits on May 11, 2026

• gh-145235: Make dict watcher API thread-safe for free-threaded builds (gh-145233)

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  yoney

  authored
  8a48959

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• gh-144957: Fix lazy imports + module __getattr__ (GH-149624)

  JelleZijlstra

  authored
  56171da

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• gh-149402: Don't assume single-character type codes (struct/array/ctypes) (#149483)

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  skirpichev

  and

  vstinner

  authored
  ef87731

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Commits on May 8, 2026

• gh-100239: expose `sq_repeat` helpers for `BINARY_OP_EXTEND` (#148791)

  NekoAsakura

  authored
  d2d24e4

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Commits on May 7, 2026

• gh-149481: skip `FOR_ITER` inline specialization for Python `__next__` (#149491)

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  3 peopleauthored
  49918f5

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Commits on May 5, 2026

• GH-143732: SEND specialization (GH-148963)

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  markshannon

  authored
  70bd1c2

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• gh-149216: Notify type watchers on heap type deallocation (GH-149236)

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  anujbharambe

  authored
  f6d16a0

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• gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)

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  encukou

  and

  ZeroIntensity

  authored
  508b498

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Commits on May 4, 2026

• gh-148675: Remove F and D formats from array and memoryview (GH-149368)

  vstinner

  authored
  5dd5c8b

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• gh-148675: Add Zd/Zf formats to array, ctypes, memoryview, struct (#148676)

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  vstinner

  authored
  6e6f905

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• gh-143732: allow dict subclasses to be specialized (GH-148128)

  kumaraditya303

  authored
  5847931

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Commits on May 3, 2026

• GH-148189: Fix miscalculation of type-specific free list memory use (#148190)

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  MazinSharaf

  and

  blurb-it[bot]

  authored
  1fc2b38

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Commits on May 2, 2026

• gh-148871: extend and improve `LOAD_COMMON_CONSTANT` (GH-148971)

  NekoAsakura

  authored
  7c9ad27

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• gh-149171: Make TypeAliasType __module__ writable (#149172)

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  ericmarkmartin

  authored
  a65611e

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Commits on May 1, 2026

• gh-145497: Use same size of static_types array in all builds (GH-149139)

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  encukou

  authored
  fcd53b6

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Commits on Apr 30, 2026

• gh-144319: Use transparent huge pages via `madvise(MADV_HUGEPAGE)` in pymalloc (#144353)

  maurycy

  authored
  5110738

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Commits on Apr 28, 2026

• gh-148829: Implement PEP 661 (#148831)

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  4 peopleauthored
  29a92ab

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Commits on Apr 25, 2026

• gh-134690: Removed deprecated `codetype.co_lnotab` (#134691)

  sobolevn

  authored
  85d3bcd

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Commits on Apr 23, 2026

• gh-113956: Make intern_common thread-safe in free-threaded build (gh-148886)

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  colesbury

  authored
  4629c22

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• gh-148907: fix performance regression in `PyType_GetModuleByDef` on free-threading (#148908)

  kumaraditya303

  authored
  29917d5

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Commits on Apr 22, 2026

• gh-148207: add additional keywords to `typing.TypeVarTuple` (#148212)

  KotlinIsland

  authored
  04fd103

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• gh-142186: Allow all PEP-669 events to be per-code object and disableable (GH-146182)

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  P403n1x87

  authored
  858e69e

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Commits on Apr 18, 2026

• gh-148659: Export a few more functions required for external JITs (#148704)

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  DinoV

  authored
  d81599e

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• gh-148222: Fix NULL dereference bugs in genericaliasobject.c (#148226)

  prakashsellathurai

  authored
  634568d

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Commits on Apr 16, 2026

• gh-148659: Export some internal functions for the JIT (PEP-523) (#148634)

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  DinoV

  authored
  2a07ff9

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• GH-145668: Add FOR_ITER specialization for virtual iterators. Specialize GET_ITER. (GH-147967)

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  markshannon

  authored
  600f4db

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• gh-100239: Specialize more binary operations using BINARY_OP_EXTEND (GH-128956)

  eendebakpt

  authored
  1f6a09f

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Commits on Apr 15, 2026

• gh-148390: fix undefined behavior of `memoryview(...).cast("?")` (#148454)

  picnixz

  authored
  69e0a78

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Commits on Apr 12, 2026

• gh-146261: JIT: protect against function version changes (#146300)

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  Fidget-Spinner

  and

  kumaraditya303

  authored
  6f7bb29

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