I'm looking for some guidance on a bug report involving isinstance and __getattribute__` please.
The issue is that if your class overloads `__getattribute__`, calling isinstance on an instance will call the overloaded `__getattribute__` method when looking up `__class__`, potentially causing isinstance to fail, or return the wrong result. See b.p.o. #32683 https://bugs.python.org/issue32683 I see no reason why this isn't working as designed, __getattribute__ is intended to overload attribute access, and that could include the `__class__` attribute. Am I wrong? It has been suggested that isinstance should call `object.__getattribute__` and bypass the class' overloaded method, but I expect that would probably break objects which intentionally lie about their class. (Mocks? Stubs? Proxies?) Thanks, Steve _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/W55NIIXBI2QNZUMTGTZNTXZ7TZSWUQ7F/ Code of Conduct: http://python.org/psf/codeofconduct/
