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

Tue May 7 11:49:47 CEST 2013

On 05/06/2013 10:18 PM, Tim Delaney wrote:
> On 7 May 2013 15:14, Tim Delaney <timothy.c.delaney at gmail.com <mailto:timothy.c.delaney at gmail.com>> wrote:
>> Unfortunately, if you subclass AutoNumber from IntEnum it breaks.
>> ---------- Run Python3 ----------
> Traceback (most recent call last):
> File "D:\home\repos\mercurial\ref435\ref435.py", line 346, in <module>
> class Color(AutoNumber):
> File "D:\home\repos\mercurial\ref435\ref435.py", line 184, in __new__
> enum_item = __new__(enum_class, *args)
> TypeError: int() argument must be a string or a number, not 'ellipsis'
>>> Or using your exact implementation, but subclassing AutoNumber from IntEnum:
>> class AutoNumber(IntEnum):
> 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 = ()
>> print(repr(Color.red))
>> ---------- Run Python3 ----------
> <Color.red: ()>

Thanks for the test case. It now passes.
--
~Ethan~