How to make a checkerboard in numpy?

Question

I\'m using numpy to initialize a pixel array to a gray checkerboard (the classic representation for \"no pixels\", or transparent). It seems like there ought to be a whizzy

Answer 1

Here is the solution using tile function in numpy.

import numpy as np

x = np.array([[0, 1], [1, 0]])
check = np.tile(x, (n//2, n//2))
# Print the created matrix
print(check)

1. for input 2, the Output is

     [[0 1]
     [1 0]]

2. for input 4, the Output is

     [[0 1 0 1] 
     [1 0 1 0]
     [0 1 0 1]
     [1 0 1 0]]