> > It seems to me that Wes is saying only that all function objects are > > callable, not that all callable objects are functions. > > Wesley said that function objects have a "heaping distinction" of > being callable. Only he can say for sure what that means; I took it to > mean that being callable is a very special property, perhaps one that > only function objects have. I just wanted to point out that there is > nothing really very special about that property, any more than being > iterable or having a length or a string representation or any of the > other properties that are implemented with special methods.
yeah, apologies for not going further to clarify... i was just focusing on functions in my reply and could've mentioned the others like classes, methods (regular, static, class), as well as any instances of classes that have implemented __call__. the point i was trying to make is that most standard Python objects *aren't* callable, so it does seem to be magic for newbies that functions are 1st class objects and that a mere pair of parentheses can make them execute. on a related note, currently in Python, there is a callable() Boolean function that returns True if the object's callable and False otherwise. this will be removed for Python 3.x because you can just use hasattr(obj, '__call__'). cheers, -wesley _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
