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1. Commits on Apr 28, 2026

   • gh-125862: Keep ContextDecorator open across generator/coroutine execution (GH-136212)

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     agronholm

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     gpshead

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2. Commits on Feb 4, 2026

   • gh-144386: Add support for descriptors in ExitStack and AsyncExitStack (#144420)

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     serhiy-storchaka

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3. Commits on Nov 10, 2023

   • gh-103791: handle `BaseExceptionGroup` in `contextlib.suppress()` (#111910)

     Zac-HD

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4. Commits on Oct 10, 2023

   • gh-110378: Close invalid generators in contextmanager and asynccontextmanager (GH-110499)

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     serhiy-storchaka

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5. Commits on Jul 20, 2023

   • gh-102799: use sys.exception() instead of sys.exc_info() in contextlib (#103311)

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     iritkatriel

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     kumaraditya303

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6. Commits on Jul 16, 2023

   • gh-105726: Add `__slots__` to `AbstractContextManager` and `AbstractAsyncContextManager` (#106771)

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     grigoriev-semyon

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     kumaraditya303

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7. Commits on Apr 24, 2023

   • gh-103791: Make contextlib.suppress also act on exceptions within an ExceptionGroup (#103792)

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     ambv

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     iritkatriel

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8. Commits on Jan 3, 2023

   • gh-95882: fix regression in the traceback of exceptions propagated from inside a contextlib context manager (#95883)

     graingert

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9. Commits on Sep 30, 2022

   • gh-96348: Deprecate the 3-arg signature of coroutine.throw and generator.throw (GH-96428)

     ofey404

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10. Commits on May 4, 2022

    • gh-92118: fix traceback of exceptions propagated from inside a contextlib.contextmanager (GH-92202)

      iritkatriel

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11. Commits on Feb 26, 2022

    • bpo-38415: Remove redundant AsyncContextDecorator.__call__ override from _AsyncGeneratorContextManager (GH-30233)

      graingert

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12. Commits on Oct 19, 2021

    • bpo-25625: add contextlib.chdir (GH-28271)

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      FFY00

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      ambv

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13. Commits on Oct 4, 2021

    • bpo-44594: fix (Async)ExitStack handling of __context__ (gh-27089)

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      belm0

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14. Commits on Sep 23, 2021

    • bpo-38415: Allow using @asynccontextmanager-made ctx managers as decorators (GH-16667)

      fried

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15. Commits on Jul 20, 2021

    • bpo-44566: resolve differences between asynccontextmanager and contextmanager (#27024)

      graingert

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16. Commits on Jun 29, 2021

    • bpo-44471: Change error type for bad objects in ExitStack.enter_context() (GH-26820)

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      serhiy-storchaka

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17. Commits on Jun 13, 2021

    • Fix typos in multiple files (GH-26689)

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      enjoy-binbin

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      terryjreedy

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      17b16e1View commit details

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18. Commits on Nov 17, 2020

    • bpo-42395: Add aclosing to __all__ (GH-23356)

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      tomgrin10

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19. Commits on Nov 9, 2020

    • bpo-41543: contextlib.nullcontext can fill in for an async context manager (GH-21870)

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      tomgrin10

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      asvetlov

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20. Commits on Nov 5, 2020

    • bpo-40816 Add AsyncContextDecorator class (GH-20516)

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      heckad

      and

      Yury Selivanov

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      178695bView commit details

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21. Commits on Nov 2, 2020

    • bpo-41229: Update docs for explicit aclose()-required cases and add contextlib.aclosing() method (GH-21545)

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      achimnol

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22. Commits on Apr 7, 2020

    • bpo-39481: Implementation for PEP 585 (#18239)

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      gvanrossum

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23. Commits on Jun 5, 2019

    • [3.9] bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-12620)

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      serhiy-storchaka

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24. Commits on Jun 1, 2019

    • bpo-37116: Use PEP 570 syntax for positional-only parameters. (GH-13700)

      serhiy-storchaka

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25. Commits on May 6, 2019

    • bpo-36542: Allow to overwrite the signature for Python functions. (GH-12705)

      serhiy-storchaka

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26. Commits on Apr 1, 2019

    • bpo-36492: Deprecate passing some arguments as keyword arguments. (GH-12637)

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      serhiy-storchaka

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27. Commits on Jun 8, 2018

    • bpo-33786: Fix asynchronous generators to handle GeneratorExit in athrow() (GH-7467)

      

      Yury Selivanov

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28. Commits on Apr 13, 2018

    • bpo-33265: use an actual method instead of a method-like function in ExitStack (GH-6456)

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      jdemeyer

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      ncoghlan

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29. Commits on Jan 28, 2018

    • bpo-30306: release arguments of contextmanager (GH-1500)

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      tecki

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      ncoghlan

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30. Commits on Jan 25, 2018

    • bpo-29302: Implement contextlib.AsyncExitStack. (#4790)

      

      Kentzo

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      Yury Selivanov

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31. Commits on Dec 14, 2017

    • bpo-30241: implement contextlib.AbstractAsyncContextManager (#1412)

      

      JelleZijlstra

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      Yury Selivanov

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32. Commits on Nov 23, 2017

    • bpo-10049: Add a "no-op" (null) context manager to contextlib (GH-4464)

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      Jesse-Bakker

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      ncoghlan

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33. Commits on Jun 9, 2017

    • bpo-30266: support "= None" pattern in AbstractContextManager (#1448)

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      JelleZijlstra

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      gvanrossum

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34. Commits on May 1, 2017

    • bpo-29679: Implement @contextlib.asynccontextmanager (#360)

      

      JelleZijlstra

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      1st1

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35. Commits on Apr 11, 2017

    • bpo-29692: contextlib.contextmanager may incorrectly unchain RuntimeError (GH-949)

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      soolabettu

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      ncoghlan

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