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How to Add Two Lists Elementwise in Python

Add two equal-length lists element by element using a list comprehension with zip, returning a new list of summed values.

list zip list-comprehension
Python 
def elementwise_add(list1, list2):
    return [a + b for a, b in zip(list1, list2)]

if __name__ == "__main__":
    list_a = [1, 2, 3, 4]
    list_b = [10, 20, 30, 40]
    result = elementwise_add(list_a, list_b)
    print(result)
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