subprocess: stdout set to subprocess.STDOUT is incorrectly handled #98966

ptsneves · 2022-11-01T15:34:00Z

Bug report

import subprocess
subprocess.run('true', stdout=subprocess.STDOUT, cwd='./')

Expected output:

Some kind of error stating that the stdout argument cannot take a subprocess.STDOUT. That subprocess.STDOUT is only valid for stderr

Actual output:

OSError: [Errno 9] Bad file descriptor: './'

I reproduce this with the latest Python main branch as well as Python 3.10 but I see no indication this issue was ever addressed

PR: gh-98966: Handle stdout=subprocess.STDOUT #98967

The text was updated successfully, but these errors were encountered:

Explicitly handle the case where stdout=STDOUT as otherwise the existing error handling gets confused and reports hard to understand errors.

Explicitly handle the case where stdout=STDOUT as otherwise the existing error handling gets confused and reports hard to understand errors. Signed-off-by: Paulo Neves <ptsneves@gmail.com>

ptsneves added the type-bug An unexpected behavior, bug, or error label Nov 1, 2022

ptsneves added a commit to ptsneves/cpython that referenced this issue Nov 1, 2022

pythongh-98966: Handle stdout=subprocess.STDOUT

b7d2917

Explicitly handle the case where stdout=STDOUT as otherwise the existing error handling gets confused and reports hard to understand errors.

bedevere-bot mentioned this issue Nov 1, 2022

gh-98966: Handle stdout=subprocess.STDOUT #98967

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subprocess: stdout set to subprocess.STDOUT is incorrectly handled #98966

subprocess: stdout set to subprocess.STDOUT is incorrectly handled #98966

Comments

ptsneves commented Nov 1, 2022 • edited by bedevere-bot

Bug report

ptsneves commented Nov 1, 2022 •

edited by bedevere-bot