Iterate over a python sequence in multiples of n?

Question

How do I process the elements of a sequence in batches, idiomatically?

For example, with the sequence \"abcdef\" and a batch size of 2, I would like to do something

Answer 1

you can create the following generator

def chunks(seq, size):
    a = range(0, len(seq), size)
    b = range(size, len(seq) + 1, size)
    for i, j in zip(a, b):
        yield seq[i:j]

and use it like this:

for i in chunks('abcdef', 2):
    print(i)