On Fri, Apr 12, 2013 at 7:07 PM, Steven D'Aprano <steve at 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)
