Richard Oudkerk added the comment: The patch does not seem to walk the mro to look for slots in base classes. Also, an instance with a __dict__ attribute may also have attributes stored in slots.
BTW, copyreg._slotnames(cls) properly calculates the slot names for cls and tries to cache them as cls.__slotnames__. Pickle does the equivalent of try: slotnames = cls.__slotnames__ except AttributeError: slotnames = copyreg._slotnames(cls) ---------- nosy: +sbt _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue13290> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com