On Fri, Apr 12, 2013 at 7:07 PM, Steven D'Aprano <st...@pearwood.info> wrote: > On 13/04/13 05:33, Barry Warsaw wrote: >> >> On Apr 12, 2013, at 11:21 AM, Russell E. Owen wrote: >> >>> I, too, would strongly prefer to see ordering within an enum. I use >>> home-made enums heavily in my code and find ordering comparisons useful >>> there. >> >> >> This was all hashed out in gory detail on python-ideas. I feel strongly >> that >> base EnumValues should be unordered, especially because the underlying >> values >> can be of any type. What would you expect to happen in this case: >> >> class X(Enum): >> a = 1 >> b = 'hi' >> >> if X.a < myvalue < X.b: >> # whaa? > > > > I would expect the same behaviour from enums that I get in Python 3 from > non-enums. That is, if enums X.a and X.b happen to both be ints, or both > strings, then comparisons should succeed, but if they are different types, I > should get a TypeError. > > The above applies to related enums. If they are unrelated (e.g. Colours.red > < Insects.ant) then I think TypeError is appropriate.
That's exactly what I'm trying to propose too, but Steven has the better words. :-) -- --Guido van Rossum (python.org/~guido) _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
