The zip function is useful here, used with a list comprehension.
zip
[x + y for x, y in zip(first, second)]
If you have a list of lists (instead of just two lists):
lists_of_lists = [[1, 2, 3], [4, 5, 6]][sum(x) for x in zip(*lists_of_lists)]# -> [5, 7, 9]
From docs
import operatorlist(map(operator.add, first,second))
Default behavior in numpy is add componentwise
import numpy as npnp.add(first, second)
which outputs
array([7,9,11,13,15])