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1. Commits on Oct 21, 2026

   • gh-74876: Support pickling weak references and weak containers (#153818)

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2. Commits on Aug 16, 2026

   • gh-154002: Do not wrap a constructor TypeError in pickle._Unpickler (GH-154003)

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     fedonman

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3. Commits on May 4, 2026

   • gh-142389: Add backticks to stdlib argparse help to display in colour (#149384)

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     hugovk

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     savannahostrowski

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4. Commits on May 2, 2026

   • gh-148914: Fix memoization of in-band PickleBuffer in the Python implementation (GH-149052)

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     serhiy-storchaka

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5. Commits on Feb 5, 2026

   • gh-77188: Add support for pickling private methods and nested classes (GH-21480)

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     ZackerySpytz

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     serhiy-storchaka

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6. Commits on Dec 8, 2025

   • Fix pyflakes warnings: variable is assigned to but never used (#142294)

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     vstinner

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7. Commits on Dec 5, 2025

   • gh-115952: Fix a potential virtual memory allocation denial of service in pickle (GH-119204)

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8. Commits on Sep 29, 2025

   • gh-76007: Deprecate `__version__` attribute (#138675)

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9. Commits on May 5, 2025

   • gh-130645: Add color to stdlib argparse CLIs (gh-133380)

     hugovk

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10. Commits on Apr 6, 2025

    • gh-131178: Add tests for `pickle` command-line interface (#131275)

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      donbarbos

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      picnixz

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11. Commits on Mar 14, 2025

    • gh-93096: Update and document `pickle` CLI (#131097)

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      4 peopleauthored
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12. Commits on Mar 11, 2025

    • gh-93096: Remove `-t` and `-v` flags from `pickle` cli (#131068)

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      donbarbos

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13. Commits on Jan 14, 2025

    • gh-118761: Improve import time of the `pickle` module. (#128732)

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      picnixz

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      AA-Turner

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14. Commits on Dec 11, 2024

    • gh-126992: Change pickle code to base 10 for load_long and load_int (GH-127042)

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      Legoclones

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      serhiy-storchaka

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15. Commits on Nov 6, 2024

    • gh-126489: Do not call persistent_id() for a persistent id in Python pickle (GH-126490)

      serhiy-storchaka

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16. Commits on Nov 2, 2024

    • gh-126317: Simplify pickle code by using itertools.batched() (GH-126323)

      dongwooklee96

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17. Commits on Sep 9, 2024

    • gh-122213: Add notes for pickle serialization errors (GH-122214)

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      serhiy-storchaka

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    • gh-122311: Improve and unify pickle errors (GH-122771)

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      serhiy-storchaka

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18. Commits on Aug 29, 2024

    • gh-123431: Harmonize extension code checks in pickle (GH-123434)

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      serhiy-storchaka

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19. Commits on Aug 5, 2024

    • gh-122459: Optimize pickling by name objects without __module__ (GH-122460)

      serhiy-storchaka

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20. Commits on Jul 29, 2024

    • gh-122311: Fix some error messages in pickle (GH-122386)

      serhiy-storchaka

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21. Commits on Jul 26, 2024

    • gh-122311: Fix typo in the pickle error formatting code (GH-122312)

      serhiy-storchaka

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22. Commits on Jul 25, 2024

    • gh-82951: Fix serializing by name in pickle protocols < 4 (GH-122149)

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      serhiy-storchaka

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23. Commits on Jul 19, 2024

    • gh-118830: Bump pickle.DEFAULT_PROTOCOL to 5 (GH-119340)

      mdkcore0

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24. Commits on Jun 21, 2024

    • gh-120380: fix Python implementation of `pickle.Pickler` for `bytes` and `bytearray` objects in protocol version 5. (GH-120422)

      picnixz

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25. Commits on Jan 5, 2024

    • gh-85567: Fix resouce warnings in pickle and pickletools CLIs (GH-113618)

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      serhiy-storchaka

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26. Commits on Dec 24, 2023

    • gh-113028: Correctly memoize str in pickle when escapes added (GH-113436)

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      jeff5

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27. Commits on Sep 10, 2023

    • gh-93627: Align Python implementation of pickle with C implementation of pickle (GH-103035)

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      eendebakpt

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28. Commits on Mar 31, 2023

    • gh-102799: use exception instance instead of sys.exc_info() (#102885)

      iritkatriel

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29. Commits on Dec 23, 2022

    • gh-99482: remove `jython` compatibility parts from stdlib and tests (#99484)

      sobolevn

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30. Commits on Jun 9, 2022

    • gh-90494: Reject 6th element of the __reduce__() tuple (GH-93609)

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      serhiy-storchaka

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31. Commits on Oct 6, 2021

    • Fix typos in the Lib directory (GH-28775)

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      cclauss

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      terryjreedy

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      745c9d9View commit details

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32. Commits on Apr 23, 2021

    • bpo-43907: add missing memoize call in pure python pickling of bytearray (GH-25501)

      cfbolz

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33. Commits on Nov 29, 2020

    • bpo-42406: Fix whichmodule() with multiprocessing (GH-23403)

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      renatolfc

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      gpshead

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      8668431View commit details

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34. Commits on May 2, 2020

    • bpo-39435: Make the first argument of pickle.loads() positional-only. (GH-19846)

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      serhiy-storchaka

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