[issue41051] Flush file after warning is written

Change by Irit Katriel : -- components: +IO type: -> behavior ___ Python tracker ___ ___ Python-bugs-list mailing list

[issue41051] Flush file after warning is written

Change by Manuel Jacob : -- keywords: +patch pull_requests: +20175 stage: -> patch review pull_request: https://github.com/python/cpython/pull/21000 ___ Python tracker ___

[issue41051] Flush file after warning is written

New submission from Manuel Jacob : Calling warnings.warn() will write to a file, but not flush it. On Python 3.9+, it won’t usually be a problem because the file is most likely stderr, which is always line-buffered. However, on older Python versions or if a different file is used, the current