generalized_pairwise.py

def pairwise(iterable, n):
    iterator = iter(iterable)
    items = [None]*n
    for i in range(n):
        try:
            items[i] = next(iterator)
        except StopIteration:
            return
    yield tuple(items)

    first, *middle, last = items

    for element in iterator:
        first, *middle, last = *middle, last, element
        yield (first, *middle, last)

items = pairwise(iterable=range(10), n=4)

for i in items:
    print(i)

"""
(0, 1, 2, 3)
(1, 2, 3, 4)
(2, 3, 4, 5)
(3, 4, 5, 6)
(4, 5, 6, 7)
(5, 6, 7, 8)
(6, 7, 8, 9)
"""