Guido van Rossum wrote: > But I'm not proposing to use hasattr(obj, '__call__'). I'm basically > saying that the callable test has very little to do with whether the > later call will succeed, because we have no way to test the signature.
I don't think that's needed for the sort of things people want callable() for. I think they want it for the purpose of implementing type-dependent APIs -- similar in spirit to doing different things depending on whether you're passed a sequence or not, etc. For that purpose, hasattr(obj, '__call__') is sufficient, I think. And if it's not, the API you're trying to implement is ill-conceived in the first place, just like testing for sequenceness is not a well-defined operation. -- Greg _______________________________________________ Python-3000 mailing list Python-3000@python.org http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
