'''
Author: SJ2050
Date: 2021-10-27 13:08:32
LastEditTime: 2021-10-27 19:06:32
Version: v0.0.1
Description: Solution for homework1.3.
Copyright © 2021 SJ2050
'''
import numpy as np

if __name__ == '__main__':
    first_row = np.vectorize(lambda x: (x+1)%2)(np.array([i for i in range(8)]))
    second_row = np.vectorize(lambda x: x%2)(np.array([i for i in range(8)]))
    mat = np.zeros((8, 8), dtype=np.int)
    for i in range(0, 8):
        if i % 2 == 0:
            mat[i] = first_row
        else:
            mat[i] = second_row
    # print(mat)
    # beautify output
    print('—————————————————————————————————')
    for r in range(8):
        for c in range(8):
            print(f'| {mat[r][c]} ', end='')
        print('|')
        print('—————————————————————————————————')