On Fri, Sep 08, 2017 at 10:37:12AM -0700, Nick Coghlan wrote: > > def __eq__(self, other): > > if other.__class__ is self.__class__: > > return (self.name, self.unit_price, self.quantity_on_hand) == > > (other.name, other.unit_price, other.quantity_on_hand) > > return NotImplemented > > My one technical question about the PEP relates to the use of an exact > type check in the comparison methods, rather than "isinstance(other, > self.__class__)".
I haven't read the whole PEP in close detail, but that method stood out for me too. Only, unlike Nick, I don't think I agree with the decision. I'm also not convinced that we should be adding ordered comparisons (__lt__ __gt__ etc) by default, if these DataClasses are considered more like structs/records than tuples. The closest existing equivalent to a struct in the std lib (apart from namedtuple) is, I think, SimpleNamespace, and they are unorderable. -- Steve _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
