Count how many zeros you have in array

Let’s learn how to count how many zeros you have in array. We will use really unexpected Numpy method.

For sure you will be surprised. To count a zeros frequency in your matrix you need to use count_nonzero function. Then as a parameter you should use your array == 0. Believe me it works.

import numpy as np

my_array = np.array([[1, 0, 5],
                    [5, 3, 0],
                    [0, 0, 2]])

zeros_frequency = np.count_nonzero(my_array == 0)
print(f"Count of zeroes in my array: \n{zeros_frequency}")

As you can see count_nonzero function counted zeros.