New submission from Jim Jewett: warnings.warn(stacklevel=2) is a longstanding idiom.
It broke in 3.3 because python itself added some additional infrastructure frames in between; now stacklevel should be 8 or 10 in some releases. issue24305 adds a workaround for 3.5, to ignore internal frames -- defined as those which contain both 'importlib' and '_bootstrap' in filename. I would prefer to see a supported hook, so that either the caller or the program setup could list other modules or packages to ignore when counting frames. That way, I could write mycall(otherlib(foo)) and otherlib could ensure that the warning pointed to mycall, rather than to something internal to otherlib, even if otherlib were refactored to a different stack depth. Ignoring just the import machinery would of course be a good default. ---------- components: Library (Lib) messages: 251328 nosy: Jim.Jewett priority: normal severity: normal status: open title: Warnings stacklevel frames to skip type: enhancement versions: Python 3.6 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue25216> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
