On 30 January 2013 07:26, Antoine Pitrou <solipsis@pitrou.net> wrote:
On Wed, 30 Jan 2013 17:58:37 +1300 Greg Ewing <greg.ewing@canterbury.ac.nz> wrote:
Guido van Rossum wrote:
class color(enum): RED = value() WHITE = value() BLUE = value()
We could do somewhat better than that:
class Color(Enum): RED, WHITE, BLUE = range(3)
With a Python 3 metaclass that provides default values for *looked up* entries you could have this: class Color(Enum): RED, WHITE, BLUE The lookup would create the member - with the appropriate value. Michael
However, it's still slightly annoying that you have to specify how many values there are in the range() call. It would be even nicer it we could just use an infinite iterator, such as
class Color(Enum): RED, WHITE, BLUE = values()
Well, how about:
class Color(Enum): values = ('RED', 'WHITE', 'BLUE')
?
(replace values with __values__ if you prefer)
Regards
Antoine.
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