New submission from STINNER Victor: Attached patch implements rich comparison for _sre.SRE_Pattern objects created by re.compile().
Comparison between patterns is used in the warnings module to not add duplicated filters, see issue #18383: New changeset f57f4e33ba5e by Martin Panter in branch '3.5': Issue #18383: Avoid adding duplicate filters when warnings is reloaded https://hg.python.org/cpython/rev/f57f4e33ba5e For the warnings module, it became a problem in test_warnings since the Python test runner started to clear all caches. When re.purge() is called, re.compile() creates a new object, whereas with the cache it returns the same object and so the two patterns are equal since it's the same object. => see issue #28688 ---------- files: pattern_compare.patch keywords: patch messages: 281046 nosy: haypo priority: normal severity: normal status: open title: Implement comparison (x==y and x!=y) for _sre.SRE_Pattern type: enhancement versions: Python 3.7 Added file: http://bugs.python.org/file45520/pattern_compare.patch _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue28727> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
