On May 14, 5:11 am, Bob Grommes <bob.grom...@gmail.com> wrote: > Obviously there is some sort of default implementation of __hash__() > at work and my implementation of _eq_() has somehow broken it. > Can anyone explain what's going on?
It looks like this has changed between Python 2 and 3: "If a class does not define an __eq__() method it should not define a __hash__() operation either; if it defines __eq__() but not __hash__(), its instances will not be usable as items in hashable collections." From: http://docs.python.org/dev/reference/datamodel.html#object.__hash__ You should just be able to add a __hash__ to Utility and it'll be fine. -- http://mail.python.org/mailman/listinfo/python-list
