--ini-enunciat

>>> from substituir import canviar_zeros

>>> l1 = [1, 2, 0, 3, 0, 4, 5, 0]
>>> l2 = [10, 20, 30, 40]
>>> canviar_zeros(l1, l2)
>>> l1
[1, 2, 10, 3, 20, 4, 5, 30]
>>> l1 = [0, 0, 3, 0, 5, 0, 7, 0, 9, 0]
>>> canviar_zeros(l1, l2)
>>> l1
[10, 20, 3, 30, 5, 40, 7, 0, 9, 0]

--fi-enunciat

>>> l1 = [0, 1, 0, 0] * 5
>>> l2 = list(range(10, 100, 10))
>>> canviar_zeros(l1, l2)
>>> l1
[10, 1, 20, 30, 40, 1, 50, 60, 70, 1, 80, 90, 0, 1, 0, 0, 0, 1, 0, 0]
>>> l2
[10, 20, 30, 40, 50, 60, 70, 80, 90]
>>> canviar_zeros(l1, l2)
>>> l1
[10, 1, 20, 30, 40, 1, 50, 60, 70, 1, 80, 90, 10, 1, 20, 30, 40, 1, 50, 60]
>>> l1 = [0, 1, 0, 1, 1, 0, 0] * 3
>>> l3 = [0] * 5 + [6] * 10
>>> canviar_zeros(l1, l3)
>>> l1
[0, 1, 0, 1, 1, 0, 0, 0, 1, 6, 1, 1, 6, 6, 6, 1, 6, 1, 1, 6, 6]
>>> canviar_zeros(l1, l2)
>>> l1
[10, 1, 20, 1, 1, 30, 40, 50, 1, 6, 1, 1, 6, 6, 6, 1, 6, 1, 1, 6, 6]