importloggingimportwarningsdefemit_user_warning()->None:"""Trigger the warning that we expect pytest-style helpers to see."""warnings.warn('MWE warning',UserWarning)defmain()->None:"""Log the warning while capturing it via ``warnings.catch_warnings``."""logging.captureWarnings(True)warnings.simplefilter('always',UserWarning)withwarnings.catch_warnings(record=True)asrecorded:emit_user_warning()print('warnings captured inside catch_warnings:',len(recorded))forentryinrecorded:print('  captured message:',entry.message)if__name__=='__main__':main()

$`uv python find 3.14` nogil_warning_capture.py warnings captured inside catch_warnings: 1  captured message: MWE warning

$ `uv python find 3.14t` nogil_warning_capture.py warnings captured inside catch_warnings: 0