[issue40707] Popen.communicate documentation does not say how to get the return code

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:


New changeset bf2e515fa43406d4bd9c4c53ecc9364034d8f9f6 by Gareth Rees in branch 'master':
bpo-40707: Document that Popen.communicate sets the returncode attribute (GH-20283)
https://github.com/python/cpython/commit/bf2e515fa43406d4bd9c4c53ecc9364034d8f9f6


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<https://bugs.python.org/issue40707>
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