New submission from Roy Williams: I'm finding the -3 flag to be super useful at identifying problems with code when porting to Python 3. One of the most common failures, however, is "DeprecationWarning: Overriding __eq__ blocks inheritance of __hash__ in 3.x". While implementing __eq__ without implementing __hash__ is very much an anti-pattern, this warning would be much less noisy if it could be thrown at time of access (like the __getslice__ warning) instead of time of declaration.
See Also: https://github.com/nedbat/coveragepy/pull/17 http://bugs.python.org/issue28260 ---------- components: Interpreter Core messages: 277305 nosy: Roy Williams priority: normal severity: normal status: open title: Python 2.7's `-3` flag warns about __eq__ being implemented without __hash__ even if __hash__ is never accessed. type: behavior versions: Python 2.7 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue28263> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
