> This is a neat trick. But can't this also be done with a static method > that accesses a static data attribute the same way?
I don't think so because the static mehod can only see the attributes of Shape not of Line. It doesn't have access to the cls value in Kent's code below... > >> @classmethod > >> def count(cls): > >> try: > >> cls._count += 1 > >> except AttributeError: > >> cls._count = 1 So if it tried to incremet count every instance of every kind of shape would increment the shape counter - which may be what you want under some circumstances, but it wouldn't know which of the subclasses was calling it so couldn't access their counters. I think thats right!? Alan G. _______________________________________________ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
