[Python-Dev] PEP 435: initial values must be specified? Yes

Ethan Furman ethan at stoneleaf.us
Tue May 7 04:29:32 CEST 2013


On 05/05/2013 02:55 PM, Tim Delaney wrote:
>
> So long as I can get one of the requirements documented to implement an auto-number syntax I'll be happy enough with
> stdlib enums I think.
>
> class Color(AutoIntEnum):
>      red = ...
>      green = ...
>      blue = ...
>

Will this do?

     class AutoNumber(Enum):
         def __new__(cls):
             value = len(cls.__enum_info__) + 1
             obj = object.__new__(cls)
             obj._value = value
             return obj
         def __int__(self):
             return self._value
     class Color(AutoNumber):
         red = ()
         green = ()
         blue = ()

--
~Ethan~


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