[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

miss-islington added the comment: New changeset d17f3d8315a3a775ab0807fc80acf92b1bd682f8 by Shantanu in branch 'master': bpo-13601: Mention stderr's line buffering in What's New (GH-20168) https://github.com/python/cpython/commit/d17f3d8315a3a775ab0807fc80acf92b1bd682f8 -- nosy:

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Change by Shantanu : -- pull_requests: +19467 pull_request: https://github.com/python/cpython/pull/20168 ___ Python tracker ___ ___

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Guido van Rossum added the comment: Can you submit a PR and CC me? -- ___ Python tracker ___ ___ Python-bugs-list mailing list

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Shantanu added the comment: I'm wondering if this should be mentioned in Python 3.9's What's New, potentially at https://docs.python.org/3.9/whatsnew/3.9.html#sys ? This change broke one of mypy's tests on 3.9 and it was a little tricky to find what had changed. -- nosy:

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

STINNER Victor added the comment: So it just took 9 years to fix this old bug :-) -- ___ Python tracker ___ ___ Python-bugs-list

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Antoine Pitrou added the comment: Jendrik, thank you for fixing this! -- resolution: -> fixed stage: patch review -> resolved status: open -> closed ___ Python tracker ___

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Antoine Pitrou added the comment: New changeset 5b9077134cd0535f21905d5f5195847526cac99c by Antoine Pitrou (Jendrik Seipp) in branch 'master': bpo-13601: always use line-buffering for sys.stderr (GH-17646) https://github.com/python/cpython/commit/5b9077134cd0535f21905d5f5195847526cac99c

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Jendrik Seipp added the comment: I took the liberty of increasing the target version. It would be great if someone could review my patch for this issue at https://github.com/python/cpython/pull/17646 . -- nosy: +jendrik versions: +Python 3.9 -Python 3.7

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Change by Jendrik Seipp : -- keywords: +patch pull_requests: +17114 stage: needs patch -> patch review pull_request: https://github.com/python/cpython/pull/17646 ___ Python tracker

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Torsten Landschoff added the comment: > Looking at > http://pubs.opengroup.org/onlinepubs/9699919799/functions/stdin.html (which > also covers stdout and stderr), it specifically says about stderr: "When > opened, the standard error stream is not fully buffered;". I

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Antoine Pitrou added the comment: Amusingly, I didn't realize I had already opened this issue when one of our users hit it recently which led me to add TextIOWrapper.reconfigure(): https://bugs.python.org/issue30526 Still, I think it would be a good idea to do this as well (switch sys.stderr

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Serhiy Storchaka added the comment: See also issue28647 and issue30404. -- nosy: +serhiy.storchaka ___ Python tracker ___

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Changes by Terry J. Reedy : -- nosy: -terry.reedy ___ Python tracker ___ ___

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

STINNER Victor added the comment: I changed the title, since sys.stderr is already line-buffered when stderr is a TTY. -- ___ Python tracker ___

[issue13601] sys.stderr should be line-buffered when stderr is not a TTY

Changes by STINNER Victor : -- title: sys.stderr should always be line-buffered -> sys.stderr should be line-buffered when stderr is not a TTY ___ Python tracker