On 04/27/2013 08:59 PM, Greg Ewing wrote:
It's possible to make it work, I think. The __call__ method
of the metaclass is going to have to do something special
anyway, so that Planet(3) can look up and return an existing
instance instead of making a new one. And if it doesn't make
a new instance, it's not going to call the __init__ method.
It works beautifully! It's not even complicated because the metaclass __new__ uses object.__new__ to create the
instances, so EnumType.__call__ is /only/ called in cases like Planet(3), or Planet('EARTH').
Sweet!
--
~Ethan~
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