Implement the generator function scale(s, k), which yields elements of the given iterable s, scaled by k. As an extra challenge, try writing this function using a yield from statement! def scale(s, k):

"""Yield elements of the iterable s scaled by a number k.

>>> s = scale([1, 5, 2], 5)

>>> type(s)

>>> list(s)

[5, 25, 10]

>>> m = scale(naturals(), 2)

>>> [next(m) for _ in range(5)]

[2, 4, 6, 8, 10]

"""