On 24/11/2010 14:08, Nick Coghlan wrote:
On Wed, Nov 24, 2010 at 10:30 PM, Michael Foord
<fuzzy...@voidspace.org.uk> wrote:
Based on a non-exhaustive search, Python standard library modules currently
using integers for constants:
Thanks for that review. I think following up on the "NamedConstant"
idea may make more sense than pursuing enums in their own right. That
way we could get the debugging benefits on the Python side regardless
of any type constraints on the value (e.g. needing to be an integer in
order to interface to C code), without needing to design an enum API
that suited all purposes.
Can you explain what you see as the difference?
I'm not particularly interested in type validation but I like the fact
that typical enum APIs allow you to group constants: the generated
constant class acts as a namespace for all the defined constants.
Are you just suggesting something along the lines of:
class NamedConstant(int):
def __new__(cls, name, val):
return int.__new__(cls, val)
def __init__(self, name, val):
self._name = name
def __repr__(self):
return '<NamedConstant %s>' % self._name
FOO = NamedConstant('FOO', 3)
In general the less features the better, but I'd like a few more
features than that. :-)
All the best,
Michael
Cheers,
Nick.
--
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