Le Wed, 30 Jan 2013 15:22:06 +0000, Michael Foord <fuzzyman@gmail.com> a écrit :
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
This relies on tuple evaluation order, and would also evaluate any other symbol looked up from inside the class body (which means I cannot add anything else than enum symbols to the class). In other words, I'm afraid it would be somewhat fragile ;) Regards Antoine.