from random import random
list_1 = [random() for _ in range(1000000)]
list_2 = [random() for _ in range(1000000)]

out = [x + y for (x, y) in zip(list_1, list_2)]
out[:3]

%timeit [x + y for (x, y) in zip(list_1, list_2)]

import numpy as np
arr_1 = np.array(list_1)
arr_2 = np.array(list_2)

type(list_1), type(arr_1)

arr_1.shape

arr_1.dtype

sum_arr = arr_1 + arr_2
sum_arr[:3]

%timeit arr_1 + arr_2