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1. Commits on Oct 23, 2026

   • gh-131999: Add support for tvOS, visionOS and watchOS. (#159944)

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     freakboy3742

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     ef08833View commit details

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2. Commits on Sep 23, 2026

   • gh-119646: Include subprocess path in OSError on Windows (GH-157713)

     bmdhodl

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     40edefaView commit details

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3. Commits on Aug 10, 2026

   • gh-85028: Honor startupinfo.wShowWindow with shell=True (GH-20975)

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     ZackerySpytz

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     serhiy-storchaka

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     b2c7b34View commit details

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4. Commits on Aug 7, 2026

   • gh-153970: Fix str() of CalledProcessError when returncode is not an integer (#153971)

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     fedonman

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5. Commits on Jul 29, 2026

   • gh-154836: Fix Popen.wait() with very large timeouts on the pidfd/kqueue wait paths (GH-154837)

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     calvinrp

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     claude

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     11d0da5View commit details

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6. Commits on Jun 24, 2026

   • gh-151485: Fix command quoting in subprocess.CalledProcessError.__str__ (#151486)

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7. Commits on Apr 27, 2026

   • gh-47798: Refactor the POSIX subprocess.Popen._communicate selector loop into helpers (GH-149032)

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     gpshead

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8. Commits on Mar 28, 2026

   • gh-146004: propagate all -X options to multiprocessing child processes (GH-146005)

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     gpshead

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9. Commits on Jan 28, 2026

   • gh-83069: Use efficient event-driven `subprocess.Popen.wait()` on Linux / macOS / BSD (#144047)

     giampaolo

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     9b154abView commit details

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10. Commits on Dec 28, 2025

    • gh-142195: Fixed Popen.communicate indefinite loops (GH-143203)

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      prithviraj-chaudhuri

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      blurb-it[bot]

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      fa9a425View commit details

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11. 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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12. Commits on Nov 29, 2025

    • gh-87512: Fix `subprocess` using `timeout=` on Windows blocking with a large `input=` (GH-142058)

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      gpshead

      and

      claude

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      5b1862bView commit details

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    • gh-74389: gh-70560: subprocess.Popen.communicate() now ignores stdin.flush error when closed (GH-142061)

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      gpshead

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    • GH-134453: Fix subprocess memoryview input handling on POSIX (GH-134949)

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      gpshead

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    • gh-141473: Fix subprocess.Popen.communicate to send input to stdin upon a subsequent post-timeout call (GH-141477)

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      mrowqa

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      gpshead

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      526d7a8View commit details

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13. Commits on Jul 15, 2025

    • GH-133711: Enable UTF-8 mode by default (PEP 686) (#133712)

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      AA-Turner

      and

      vstinner

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14. Commits on May 5, 2025

    • gh-133089: Use original timeout value for `TimeoutExpired` when the func `subprocess.run` is called with a timeout (GH-133103)

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      Zheaoli

      and

      gpshead

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15. Commits on Apr 7, 2025

    • gh-129204: Add _PYTHON_SUBPROCESS_USE_POSIX_SPAWN environment knob (GH-132184)

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      vfazio

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      4c5dcc6View commit details

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16. Commits on Feb 16, 2025

    • gh-118761: Revert "Improve import time of `subprocess` (GH-129427)" (#130201)

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      gpshead

      and

      picnixz

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      ae30646View commit details

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    • gh-130080: return in finally in subprocess.py (#130081)

      iritkatriel

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17. Commits on Jan 29, 2025

    • gh-118761: Improve import time of `subprocess` (GH-129427)

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      hukkin

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18. Commits on Dec 30, 2024

    • gh-128342: Specify timeout unit in subprocess docstrings (GH-128343)

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      n-l-i

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      terryjreedy

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      dafe7a4View commit details

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19. Commits on Jul 31, 2024

    • gh-121381 Remove subprocess._USE_VFORK escape hatch (#121383)

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      cmaloney

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20. Commits on Jun 14, 2024

    • gh-120417: Fix "imported but unused" linter warnings (#120461)

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      vstinner

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21. Commits on May 11, 2024

    • GH-118844: Fix build failures when combining --disable-gil with --enable-experimental-jit (GH-118935)

      savannahostrowski

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22. Commits on Apr 28, 2024

    • gh-118293: Suppress mouse cursor feedback when launching Windows processes with multiprocessing (GH-118315)

      tunedal

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      133c1a7View commit details

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23. Commits on Mar 26, 2024

    • gh-98966: Handle stdout=subprocess.STDOUT (GH-98967)

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      ptsneves

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      4abca7eView commit details

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24. Commits on Mar 19, 2024

    • gh-90872: Fix subprocess.Popen.wait() for negative timeout (#116989)

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      vstinner

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25. Commits on Mar 11, 2024

    • gh-116167: Allow disabling the GIL with `PYTHON_GIL=0` or `-X gil=0` (#116338)

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      swtaarrs

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      2731913View commit details

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26. Commits on Jan 18, 2024

    • gh-104522: Fix OSError raised when run a subprocess (#114195)

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      serhiy-storchaka

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      PurityLake

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      e2c097eView commit details

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27. Commits on Dec 17, 2023

    • gh-113117: Support posix_spawn in subprocess.Popen with close_fds=True (#113118)

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      kulikjak

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      gpshead

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      2b93f52View commit details

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    • gh-113119 fix environment handling in subprocess.Popen when posix_spawn is used (#113120)

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      kulikjak

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      48c907aView commit details

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28. Commits on Dec 5, 2023

    • gh-112736: Refactor del-safe symbol handling in subprocess (#112738)

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      freakboy3742

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      dc824c5View commit details

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29. Commits on Jul 28, 2023

    • gh-106723: forward -Xfrozen_modules option to spawned process interpreters (#106724)

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      3dcac78View commit details

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30. Commits on May 16, 2023

    • gh-87474: Fix file descriptor leaks in subprocess.Popen (#96351)

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      cptpcrd

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      gpshead

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      3a4c44bView commit details

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