Numpy Array – Add a constant to all elements of the array
Adding a constant to a NumPy array is as easy as adding two numbers.
To add a constant to each and every element of an array, use addition arithmetic operator +. Pass array and constant as operands to the addition operator as shown below.
output = arr + c
- arr is a numpy array.
- c is a constant.
- output is the resulting numpy array.
1. Add a constant of 3 to each element in the array
In the following python example, we will add a constant 3 to an array arr. The resulting array is stored in output and print to the standard output.
Run Code Copy
import numpy as np #2D array arr = (np.arange(8)*2).reshape(2,4) #print array print("The array\n", arr) #adding a constant to all the elemnets of array output = arr + 3 print("\nAfter adding a constant to all the elemnets of array\n", output)
In this NumPy Tutorial, we learned how to add a constant to each of the element in numpy array using addition operator.