[issue36686] Docs: asyncio.loop.subprocess_exec documentation is confusing, it's not clear how to inherit stdin, stdout or stderr in the subprocess

[Andrew Svetlov]

Change by Andrew Svetlov :


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resolution:  -> fixed
versions:  -Python 3.5, Python 3.6, Python 3.7, Python 3.9

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[issue36686] Docs: asyncio.loop.subprocess_exec documentation is confusing, it's not clear how to inherit stdin, stdout or stderr in the subprocess

[Simon Bernier St-Pierre]

Change by Simon Bernier St-Pierre :


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stage: patch review -> resolved
status: open -> closed

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[issue36686] Docs: asyncio.loop.subprocess_exec documentation is confusing, it's not clear how to inherit stdin, stdout or stderr in the subprocess

[miss-islington]

miss-islington  added the comment:


New changeset f0d4c64019ecf8a5f362aa5a478786241613e5c3 by Miss Islington (bot) 
(sbstp) in branch 'master':
bpo-36686: Improve the documentation of the std* params in loop.subprocess_exec 
(GH-13586)
https://github.com/python/cpython/commit/f0d4c64019ecf8a5f362aa5a478786241613e5c3


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nosy: +miss-islington

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[issue36686] Docs: asyncio.loop.subprocess_exec documentation is confusing, it's not clear how to inherit stdin, stdout or stderr in the subprocess

[Simon Bernier St-Pierre]

Change by Simon Bernier St-Pierre :


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keywords: +patch
pull_requests: +13493
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/13586

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[issue36686] Docs: asyncio.loop.subprocess_exec documentation is confusing, it's not clear how to inherit stdin, stdout or stderr in the subprocess

[Andrew Svetlov]

Andrew Svetlov  added the comment:

Pull Request is welcome!

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[issue36686] Docs: asyncio.loop.subprocess_exec documentation is confusing, it's not clear how to inherit stdin, stdout or stderr in the subprocess

[Simon Bernier St-Pierre]

Simon Bernier St-Pierre  added the comment:

Could be cool to also mention that `encoding` / `errors` does not work yet. 
https://bugs.python.org/issue31087

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[issue36686] Docs: asyncio.loop.subprocess_exec documentation is confusing, it's not clear how to inherit stdin, stdout or stderr in the subprocess

[Simon Bernier St-Pierre]

New submission from Simon Bernier St-Pierre :

I had trouble figuring out how to simply inherit stdin, stdout, or stderr in 
the asyncio.create_subprocess_exec / asyncio.subprocess_exec docs. My 
experiments show that passing either None or `sys.std*` works but the way the 
docs are written make it hard to figure that out in my opinion.

> stdout: either a file-like object representing the pipe to be connected to 
> the subprocess’s standard output stream using connect_read_pipe(), or the 
> subprocess.PIPE constant (default). By default a new pipe will be created and 
> connected.

I would add a mention that using None makes the subprocess inherit the file 
descriptor.

--
components: asyncio
messages: 340593
nosy: asvetlov, sbstp, yselivanov
priority: normal
severity: normal
status: open
title: Docs: asyncio.loop.subprocess_exec documentation is confusing, it's not 
clear how to inherit stdin, stdout or stderr in the subprocess
versions: Python 3.5, Python 3.6, Python 3.7, Python 3.8, Python 3.9

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