PEP 354: Enumerations in Python

[Ben Finney]

Paul Rubin <http://phr.cx@NOSPAM.invalid> writes:
> Ben Finney <bignose+python at benfinney.id.au> writes:
>> Enumerations with no values are meaningless.  The exception
>> ``EnumEmptyError`` is raised if the constructor is called with no
>> value arguments.
>
> Why are empty enumerations not allowed?  Empty sets, empty lists,
> empty dictionaries are all allowed.  I don't see any obvious benefits
> to not allowing empty enumerations.

By way of explanation, my earlier implementations of this didn't have
enumerations as sequences. Now that the design has converged more on a
sequence and container idiom, I agree with you.

I'll amend the specification so empty enumerations are not an
error. (This will also remove the last remaining exception class from
the specification, making it cleaner still. Good.)

-- 
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Ben Finney