from itertools import *

# Python 3.12:
if "batched" not in globals():
    # https://docs.python.org/3/library/itertools.html#itertools.batched
    def batched(iterable, n):
        # batched('ABCDEFG', 3) --> ABC DEF G
        if n < 1:
            raise ValueError("n must be at least one")
        it = iter(iterable)
        while batch := tuple(islice(it, n)):
            yield batch