while what you are doing is interesting, it is not the same as Python's iterators, which use "yield" from a function and don't require storing a value in a class. look for "yield" in the python docs. this comment may be irrelevant; i am just worried you are confusing the above (which apart from the mistake about instances is perfectly ok) and python's iterators (which use next(), yield, etc).
You are confusing generators with the iterator-protocol. Iteration has been part of python long before generators appeared on the scene.
Diez -- http://mail.python.org/mailman/listinfo/python-list
