Home / Python Numpy / How to Compute Addition of Two Array in NumPy In this example we will show how to compute the addition of two arrays using the add() function in Python NumPy. Source Code import numpy as np a = [1, 2, 3, 4] b = [5, 6, 7, 8] c = np.add(a, b) print(c) Output: [ 6 8 10 12]