iterate N elements at a time

[DeaD_EyE]

def chunker(iterable, chunksize):
    return zip(*[iter(iterable)] * chunksize)

def chunker_longest(iterable, chunksize):
    return itertools.zip_longest(*[iter(iterable)] * chunksize)

for chunk in chunker_longest(range(101), 10):
    print(chunk)

Output:
(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
(10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
(20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
(30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
(40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
(50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
(60, 61, 62, 63, 64, 65, 66, 67, 68, 69)
(70, 71, 72, 73, 74, 75, 76, 77, 78, 79)
(80, 81, 82, 83, 84, 85, 86, 87, 88, 89)
(90, 91, 92, 93, 94, 95, 96, 97, 98, 99)
(100, None, None, None, None, None, None, None, None, None)