Set numpy array elements to zero if they are above a specific threshold

Question

Say, I have a numpy array consists of 10 elements, for example:

a = np.array([2, 23, 15, 7, 9, 11, 17, 19, 5, 3])

Now I want to eff

Answer 1

If you don't want to change your original array

In [1]: import numpy as np


In [2]: a = np.array([2, 23, 15, 7, 9, 11, 17, 19, 5, 3])


In [3]: b = np.where(a > 10, 0, a)


In [4]: a

Out[4]: array([ 2, 23, 15,  7,  9, 11, 17, 19,  5,  3])


In [5]: b

Out[5]: array([2, 0, 0, 7, 9, 0, 0, 0, 5, 3])