add 2 to index python code example

Example 1: calculate the addition of two lists in python

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]

Example 2: add two list in python

list1 = ["a", "b" , "c"]
list2 = [1, 2, 3]

list1.extend(list2)
print(list1)