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gh-141473: Document not calling Popen.wait after Popen.communicate times out. (GH-142101)

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Document not calling Popen.wait after Popen.communicate times out.

Closes #141473
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Gregory P. Smith 2025-11-30 18:50:05 -08:00 • committed by GitHub
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Doc/library/subprocess.rst
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@ -846,6 +846,11 @@ Instances of the :class:`Popen` class have the following methods:
proc.kill()
outs, errs = proc.communicate()
After a call to :meth:`~Popen.communicate` raises :exc:`TimeoutExpired`, do
not call :meth:`~Popen.wait`. Use an additional :meth:`~Popen.communicate`
call to finish handling pipes and populate the :attr:`~Popen.returncode`
attribute.
.. note::
The data read is buffered in memory, so do not use this method if the data