创建随机整数

# Creates a 5x5 random integer array ranging from 10 (inclusive) to 20 (inclusive)
np.random.randint(10, 20, (5, 5))

''' 
Out: array([[12, 14, 17, 16, 18],
            [18, 11, 16, 17, 17],
            [18, 11, 15, 19, 18],
            [19, 14, 13, 10, 13],
            [15, 10, 12, 13, 18]])
'''