bpo-42388: Fix subprocess.check_output input=None when text=True#23467
Merged
Conversation
When the modern text= spelling of the universal_newlines= parameter was added for Python 3.7, check_output's special case around input=None was overlooked. So it behaved differently with universal_newlines=True vs text=True. This reconciles the behavior to be consistent and adds a test to guarantee it. The documentation already describes this check_output input=None behavior difference vs the other subprocess functions. This ensures that documented behavior remains accurate in all cases.
gpshead
added
type-bug
Contributor
|
Would it also make sense to clarify the following sentence in the docs?
It's not clear to me whether I must not pass |
|
This PR is stale because it has been open for 30 days with no activity. |
Member
Author
|
Thanks @izbyshev, I've clarified the docs. |
github-actions
Bot
removed
the
stale
izbyshev
reviewed
Dec 24, 2020
izbyshev
left a comment
izbyshev
left a comment
Contributor
There was a problem hiding this comment.
Thanks! If I may nitpick, I suggest an even more clarified change :)
Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru>
Contributor
|
Thanks @gpshead for the PR 🌮🎉.. I'm working now to backport this PR to: 3.8, 3.9. |
miss-islington
pushed a commit
to miss-islington/cpython
that referenced
this pull request
Dec 25, 2020
…honGH-23467) When the modern text= spelling of the universal_newlines= parameter was added for Python 3.7, check_output's special case around input=None was overlooked. So it behaved differently with universal_newlines=True vs text=True. This reconciles the behavior to be consistent and adds a test to guarantee it. Also clarifies the existing check_output documentation. Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru> (cherry picked from commit 64abf37) Co-authored-by: Gregory P. Smith <greg@krypto.org>
|
GH-23934 is a backport of this pull request to the 3.9 branch. |
miss-islington
pushed a commit
to miss-islington/cpython
that referenced
this pull request
Dec 25, 2020
…honGH-23467) When the modern text= spelling of the universal_newlines= parameter was added for Python 3.7, check_output's special case around input=None was overlooked. So it behaved differently with universal_newlines=True vs text=True. This reconciles the behavior to be consistent and adds a test to guarantee it. Also clarifies the existing check_output documentation. Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru> (cherry picked from commit 64abf37) Co-authored-by: Gregory P. Smith <greg@krypto.org>
|
GH-23935 is a backport of this pull request to the 3.8 branch. |
miss-islington
added a commit
that referenced
this pull request
Dec 25, 2020
…23467) When the modern text= spelling of the universal_newlines= parameter was added for Python 3.7, check_output's special case around input=None was overlooked. So it behaved differently with universal_newlines=True vs text=True. This reconciles the behavior to be consistent and adds a test to guarantee it. Also clarifies the existing check_output documentation. Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru> (cherry picked from commit 64abf37) Co-authored-by: Gregory P. Smith <greg@krypto.org>
miss-islington
added a commit
that referenced
this pull request
Dec 25, 2020
…23467) When the modern text= spelling of the universal_newlines= parameter was added for Python 3.7, check_output's special case around input=None was overlooked. So it behaved differently with universal_newlines=True vs text=True. This reconciles the behavior to be consistent and adds a test to guarantee it. Also clarifies the existing check_output documentation. Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru> (cherry picked from commit 64abf37) Co-authored-by: Gregory P. Smith <greg@krypto.org>
adorilson
pushed a commit
to adorilson/cpython
that referenced
this pull request
Mar 13, 2021
…honGH-23467) When the modern text= spelling of the universal_newlines= parameter was added for Python 3.7, check_output's special case around input=None was overlooked. So it behaved differently with universal_newlines=True vs text=True. This reconciles the behavior to be consistent and adds a test to guarantee it. Also clarifies the existing check_output documentation. Co-authored-by: Alexey Izbyshev <izbyshev@ispras.ru>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
5 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
When the modern text= spelling of the universal_newlines= parameter was added
for Python 3.7, check_output's special case around input=None was overlooked.
So it behaved differently with universal_newlines=True vs text=True. This
reconciles the behavior to be consistent and adds a test to guarantee it.
The documentation already described this check_output input=None behavior
difference vs the other subprocess functions, but it wasn't very clear to readers.
The documentation has been clarified as part of this.
https://bugs.python.org/issue42388