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bpo-35537: Document posix_spawn() change in subprocess (GH-11668)

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Document that subprocess.Popen no longer raise an exception on error
like missing program on very specific platforms when using
os.posix_spawn() is used.
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Victor Stinner 2019-04-25 14:30:16 +02:00 • committed by GitHub
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7
Doc/library/subprocess.rst
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@ -567,6 +567,13 @@ functions.
Popen destructor now emits a :exc:`ResourceWarning` warning if the child
process is still running.
.. versionchanged:: 3.8
Popen can use :func:`os.posix_spawn` in some cases for better
performance. On Windows Subsystem for Linux and QEMU User Emulation,
Popen constructor using :func:`os.posix_spawn` no longer raise an
exception on errors like missing program, but the child process fails
with a non-zero :attr:`~Popen.returncode`.
Exceptions
^^^^^^^^^^