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GeezerVison is showing github.com — gh-138234: clarify returncode behavior for subprocess_exec vs subprocess_shell by andreuu-tsai · Pull Request #138536 · python/cpython

gh-138234: clarify returncode behavior for subprocess_exec vs subprocess_shell #138536

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Merged
kumaraditya303 merged 3 commits into python:main from andreuu-tsai:doc-asyncio-subprocess-returncode-in-shell
Mar 21, 2026

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Merged

gh-138234: clarify returncode behavior for subprocess_exec vs subprocess_shell #138536

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979128f
docs: clarify returncode behavior for subprocess_exec vs subprocess_s…
andreuu-tsai Sep 5, 2025
4590558
Add note subprocess as well
kumaraditya303 Mar 21, 2026
91c46ab
Merge branch 'main' into doc-asyncio-subprocess-returncode-in-shell
kumaraditya303 Mar 21, 2026
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12 changes: 10 additions & 2 deletions 12 Doc/library/asyncio-subprocess.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -311,8 +311,16 @@ their completion.

A ``None`` value indicates that the process has not terminated yet.

A negative value ``-N`` indicates that the child was terminated
by signal ``N`` (POSIX only).
For processes created with :func:`~asyncio.create_subprocess_exec`, a negative
value ``-N`` indicates that the child was terminated by signal ``N``
(POSIX only).

For processes created with :func:`~asyncio.create_subprocess_shell`, the
return code reflects the exit status of the shell itself (e.g. ``/bin/sh``),
which may map signals to codes such as ``128+N``. See the
documentation of the shell (for example, the Bash manual's Exit Status)
for details.



.. _asyncio-subprocess-threads:
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5 changes: 5 additions & 0 deletions 5 Doc/library/subprocess.rst
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Expand Up @@ -964,6 +964,11 @@ Reassigning them to new values is unsupported:
A negative value ``-N`` indicates that the child was terminated by signal
``N`` (POSIX only).

When ``shell=True``, the return code reflects the exit status of the shell
itself (e.g. ``/bin/sh``), which may map signals to codes such as
``128+N``. See the documentation of the shell (for example, the Bash
manual's Exit Status) for details.


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