On Fri, 25 Nov 2005 23:20:05 -0500, Mike Meyer wrote: > Steven D'Aprano <[EMAIL PROTECTED]> writes: >> "Hmmm, the class designer didn't want me adding attributes to instances... >> maybe he had a good reason for that..." > > When it was suggested that a facility for doing this be added to the > language, I asked for a use case for it. Nobodies come up with a > reason for placing such restriction on the client yet.
Oh, I think it is terribly unfair to call them nobodies, even if you don't like their use-cases *grin* > If you've got a use case, I'd be interested in hearing it. frozenset perhaps? If it were needed once, it could be needed again. The obvious case would be for a class where distinct instances that compare equal but not identical map to the same value in a dict. In any case, I'm not the one claiming that I need custom immutable classes. I'm just suggesting that there is nothing non-Pythonic about them. If Ben thinks he needs them, I'm sure he has put *far* more thought into it than I have. I know Ben in RL, and he is not someone to make snap judgements about turning Python into Some Other Language Just Because. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
