>>>> for x in range(10) for y in range(10) if x+y==5: >>>> print x,y
> What is that supposed to mean? Nested looping? Why is that (confusing > thing) better than: > > from itertools import product > > for x, y in product(range(10), range(10)) if x + y == 5: > print x, y > That confusing thing is what you use every day for list and generator comprehension. But I didn't know that python 2.6 incorporated itertools.product (I use 2.5, and didn't search hard enough) I agree that itertools.product is a perfectly nice solution > +1 on the "if" and (possibly) "while" conditional looping. > -1 on shorthand nested for. same thing here, now that I know about itertools.product -- http://mail.python.org/mailman/listinfo/python-list