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gh-87597: Document TimeoutExpired.stdout & .stderr types. #97685

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gpshead merged 2 commits into from
Sep 30, 2022
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gh-87597: Document TimeoutExpired.stdout & .stderr types. #97685

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gh-87597: Document TimeoutExpired.stdout & .stderr types.
gpshead Sep 30, 2022
35dcb7d
slight rewording clarification.
gpshead Sep 30, 2022
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slight rewording clarification. 
That is is None even when people ask to capture output but the process
generated no output is a long standing API wart.
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@gpshead
gpshead committed Sep 30, 2022
commit 35dcb7d893eb4d980ba8744c51ed1126618fdcb3
8 changes: 4 additions & 4 deletions Doc/library/subprocess.rst
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Expand Up @@ -195,8 +195,8 @@ underlying :class:`Popen` interface can be used directly.
Output of the child process if it was captured by :func:`run` or
:func:`check_output`. Otherwise, ``None``. This is always
:class:`bytes` when any output was captured regardless of the
``text=True`` setting. It may be ``None`` when there was no output
captured.
``text=True`` setting. It may remain ``None`` instead of ``b''``
when no output was observed.

.. attribute:: stdout

Expand All @@ -206,8 +206,8 @@ underlying :class:`Popen` interface can be used directly.

Stderr output of the child process if it was captured by :func:`run`.
Otherwise, ``None``. This is always :class:`bytes` when stderr output
was captured regardless of the ``text=True`` setting. It may be
``None`` when there was no stderr output captured.
was captured regardless of the ``text=True`` setting. It may remain
``None`` instead of ``b''`` when no stderr output was observed.

.. versionadded:: 3.3

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