Eryk Sun added the comment: > Please treat this as a new feature (just in case) and only > apply it to 3.6.
How about changing PyType_CheckExact to PyType_Check for 2.7 and 3.5? It solves the original problem by expanding the single-argument case to metaclasses that aren't an exact instance of `type`. I think that's unlikely to break existing code. It also shouldn't cause a performance problem since the PyType_Check macro uses the Py_TPFLAGS_TYPE_SUBCLASS flag. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue27157> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
