[Python-Dev] constant/enum type in stdlib

[Antoine Pitrou]

Le mardi 23 novembre 2010 à 15:40 +0000, Michael Foord a écrit :
> On 23/11/2010 15:30, Antoine Pitrou wrote:
> > Le mardi 23 novembre 2010 à 15:15 +0000, Michael Foord a écrit :
> >> There are still two reasonable APIs (unless you have changed your mind
> >> and think that sticking with plain integers is best), of which I prefer
> >> the latter:
> >>
> >> SOME_CONST = Constant('SOME_CONST', 1)
> >> OTHER_CONST = Constant('OTHER_CONST', 2)
> >>
> >> or:
> >>
> >> Constants = make_constants('Constants', 'SOME_CONST OTHER_CONST', start=1)
> > Or:
> >
> > Constants = make_constants('Constants', 'SOME_CONST OTHER_CONST',
> >                             values=range(1, 3))
> >
> > Again, auto-enumeration is useless since it's trivial to achieve
> > explicitly.
> 
> Ah, I see. It is the auto-enumeration you disliked. Sure - not a problem.
> 
> I think the step that Nick described, of evaluating places in the 
> standard library that this could be used, is a good one. I'll try to get 
> around to it and perhaps attempt to resuscitate the PEP. (Any 
> suggestions as to an appropriate module if having it live in its own 
> module is still an objection?)

We already have a bunch of bizarrely unrelated stuff in collections
(such as Callable), so we could put enum there too.

Regards

Antoine.