# Created on savesnippets.com · https://savesnippets.com/jwh58rud09YXav
from collections import deque
from typing import Iterable, Iterator, TypeVar

T = TypeVar("T")

def sliding_window[T](items: Iterable[T], n: int) -> Iterator[tuple[T, ...]]:
    it = iter(items)
    window: deque[T] = deque(maxlen=n)
    for _ in range(n):
        try: window.append(next(it))
        except StopIteration: return
    yield tuple(window)
    for x in it:
        window.append(x)
        yield tuple(window)

list(sliding_window([1, 2, 3, 4, 5], 3))
# [(1, 2, 3), (2, 3, 4), (3, 4, 5)]

# Moving average (last 3 values)
readings = [10, 13, 12, 18, 22]
[sum(w) / 3 for w in sliding_window(readings, 3)]   # [11.67, 14.33, 17.33]