[issue39744] asyncio.subprocess's communicate(None) does not close stdin

[Marek Marczykowski-Górecki]

Change by Marek Marczykowski-Górecki :


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keywords: +patch
pull_requests: +18010
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/18650

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[issue39744] asyncio.subprocess's communicate(None) does not close stdin

[Marek Marczykowski-Górecki]

Marek Marczykowski-Górecki  added the comment:

This is BTW similar to https://bugs.python.org/issue26848

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[issue39744] asyncio.subprocess's communicate(None) does not close stdin

[Marek Marczykowski-Górecki]

New submission from Marek Marczykowski-Górecki :

Standard subprocess's communicate() called with None input (or no argument at 
all closes process stdin. The asyncio variant does not.
This leads to issue with various processes that wait for EOF on stdin before 
terminating.

Test script attached.

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components: asyncio
files: commmunicate-test.py
messages: 362605
nosy: asvetlov, marmarek, yselivanov
priority: normal
severity: normal
status: open
title: asyncio.subprocess's communicate(None) does not close stdin
versions: Python 3.7, Python 3.8, Python 3.9
Added file: https://bugs.python.org/file48910/commmunicate-test.py

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