list1 = [1, 2, 3]
list2 = [4, 5, 6]
# `zipped_lists` contains pairs of items from both lists.
# Create a list with the sum of each pair.
sum = [x + y for (x, y) in zip(list1, list2)]
print(sum)
# [5, 7, 9]
list1 = ["a", "b" , "c"]
list2 = [1, 2, 3]
list1.extend(list2)
print(list1)
import numpy as np
np.add(first, second)