generator object, next method

[simonwittber at gmail.com]

> Why is that?  I thought gen.next is a callable and gen.next() actually
> advances the iterator.  Why shouldn't gen.next always be the same object?

That is, in essence, my question.

Executing the below script, rather than typing at a console, probably
clarifies things a little.

Sw.

#-------------------
def iterator():
    yield None

gen = iterator()

#gen.next is bound to x, and therefore, gen.next should not be GC?
x = gen.next
y = gen.next
print x
print y
print gen.next
#-------------------