To take one example >>> range(10) [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] So that's what range() does! >>> range(10) range(0, 10) Uhhh... I love iterators,

To take one example >>> range(10) [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] So that's what range() does! >>> range(10) range(0, 10) Uhhh... I love iterators, but they're not an obvious concept at first.