[Python-Dev] PyPy, Jython, & IronPython: Enum convenience function and pickleablity

Georg Brandl g.brandl at gmx.net
Fri May 3 21:14:42 CEST 2013

Am 03.05.2013 11:40, schrieb Steven D'Aprano:
> On 03/05/13 18:42, Antoine Pitrou wrote:
>> Le Fri, 3 May 2013 09:14:22 +1000, Nick Coghlan <ncoghlan at gmail.com> a
>> écrit :
>>> I would suggest moving the field names into the class header for a class
>>> based convenience API:
>>> class Animal(Enum, members='cat dog'): pass
>> This looks good to me (assuming some people don't like the special
>> attribute scheme).
> The problem is that this is not an expression, it is a statement. The
> advantage of the convenience function is not just that it is shorter, but
> that it is an expression.

But using that expression in any form other than

NAME = Enum('NAME', ...)

will again result in an unpicklable enum, which was the point of this thread.


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