How do I remove all elements from a numpy array that are equal to zero in another array?

Question

How do I remove all elements from a numpy array that are equal to zero in another array?
I want to use the indices of one numpy array mask where mask==0 to delete the elements of another same-shaped array array .
I tried something like np.delete(array,mask==0) but that just gave me an error.

Answer 1

use np.where

array = array[np.where(another_array != 0)]