How to multiply the elements of an array by a number in python ?

To multiply the elements of an array by a number in python, a solution is to use the * operator, example:

>>> import numpy as np
>>> A = np.array([[1,2,0],[4,3,-1]])
>>> A
array([[ 1,  2,  0],
       [ 4,  3, -1]])
>>> A * 2
array([[ 2,  4,  0],
       [ 8,  6, -2]])

References