To Joel's and Wesley's valuable comments I add:
Calling a generator function returns a /generator object/.
>>> def x(n):
... for i in range(n): yield i
...
>>> y = x(3)
>>> print y
<generator object x at 0x01333BE8>
A generator object can be used instead of some other "iterable" (e.g.)
in for statements.
>>> for i in y:print i
0
1
2
x in this case is equivalent to xrange() with exactly 1 argument.
There is more that can be said regarding x.next(). x.send(), raise
StopIteration but I've said enough for now.
--
Bob Gailer
919-636-4239
Chapel Hill NC
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