Replacement of zeros X57494

Statement

Write a function @replacement(f, g)@ that provided two integer lists $f$ and $g$ returns the list obtained after replacing the zeros in list $f$ with values in $g$ . First zero has to be replaced with the first number in $g$ , the second zero with the second number in $g$ and so on, until there are no more zeros in $f$ or there are no more available numbers in $g$ . When values in $g$ have been exhausted no more replacements are done. Lists $f$ and $g$ do not have to change.

Sample session

>>> replacement([1, -1, 0, 2, 0], [3, -2, 1])
[1, -1, 3, 2, -2]
>>> replacement([1, -1, 0, 2, 0], [5])
[1, -1, 5, 2, 0]
>>> replacement([1, -1, 0, 2, 0], [0])
[1, -1, 0, 2, 0]
>>> replacement([1, -1, 0, 2, 0], [])
[1, -1, 0, 2, 0]
>>> f, g = [0, 0, -1, 0, 0], [2, 5, 3]
>>> replacement(f, g)
[2, 5, -1, 3, 0]
>>> f == [0, 0, -1, 0, 0] and  g == [2, 5, 3]
True

Information

Author: ProAl
Language: English
Official solutions: Python
User solutions: Python