Function batched

tests/test_sequence_packer.py:25–31

(iterable, n)

def batched(iterable, n):
    # batched('ABCDEFG', 3) → ABC DEF G
    if n < 1:
        raise ValueError("n must be at least one")
    iterator = iter(iterable)
    while batch := list(itertools.islice(iterator, n)):
        yield batch


xs = [