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bpo-41147 Document that redirect_stdout provides the new stream as context var #21199

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merged 6 commits into from
May 26, 2021
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bpo-41147 Document that redirect_stdout provides the new stream as context var #21199

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cdcf0b7
Document that redirect_stdout provides the new stream as context var
PeterJCLaw Jun 28, 2020
31063a4
Be explicit that the new stream ends up in the context var
PeterJCLaw Jul 3, 2020
67c22ce
Clarify that we mean the target of the with statement
PeterJCLaw Jul 17, 2020
a533a2e
Properly quote this
PeterJCLaw Aug 21, 2020
40dcc50
Fix typo
PeterJCLaw Aug 21, 2020
14d7692
The replacement stream is not neccesarily new
PeterJCLaw May 23, 2021
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7 changes: 4 additions & 3 deletions Doc/library/contextlib.rst
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Expand Up @@ -236,10 +236,11 @@ Functions and classes provided:

For example, the output of :func:`help` normally is sent to *sys.stdout*.
You can capture that output in a string by redirecting the output to an
:class:`io.StringIO` object::
:class:`io.StringIO` object. The replacement stream is returned from the
``__enter__`` method and so is available as the target of the
:keyword:`with` statement::

f = io.StringIO()
with redirect_stdout(f):
with redirect_stdout(io.StringIO()) as f:
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help(pow)
s = f.getvalue()

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