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[Python-Dev] Enum: subclassing?

Eli Bendersky eliben at gmail.com
Wed May 1 23:57:33 CEST 2013 
On Wed, May 1, 2013 at 2:52 PM, Georg Brandl <g.brandl at gmx.net> wrote:

> Am 01.05.2013 23:48, schrieb Eli Bendersky:
>
> >     Well, my point is that you currently don't have to inherit from int
> (or IntEnum)
> >     to get an __int__ method on your Enum, which is what I find
> questionable.  IMO
> >     conversion to integers should only be defined for IntEnums.  (But I
> haven't
> >     followed all of the discussion and this may already have been
> decided.)
> >
> >
> > Good point. I think this may be just an artifact of the implementation -
> PEP 435
> > prohibits implicit conversion to integers for non-IntEnum enums. Since
> IntEnum
> > came into existence, there's no real need for int-opearbility of other
> enums,
> > and their values can be arbitrary anyway.
>
> OK, I'm stupid -- I was thinking about moving the __int__ method to IntEnum
> (that's why I brought it up in this part of the thread), but as a subclass
> of
> int itself that obviously isn't needed :)


You did bring up a good point, though - __int__ should not be part of
vanilla Enum.

Eli
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