https://docs.python.org/3/library/warnings.html#warnings.catch_warnings reads:

Ifrecord isTrue, a list is returned that is progressively populated with objects as seen by a customshowwarning() function (which also suppresses output tosys.stdout).

Was it meant to saysys.stderr instead?
Otherwise, I don't understand why it mentionsstdout specifically. I don't see anything aboutstdout elsewhere in the module docs or in the implementation.

Linked PRs

• gh-129846: docs(warnings): clarify suppression of warning output incatch_warnings #130768