numpy how to append to 2d array code example

Example 1: append value to numpy array

x = np.random.randint(2, size=10)
x = np.append(x, 2)

Example 2: np array append

>>> import numpy as np
>>> np.append([[0, 1, 2], [3, 4, 5]],[[6, 7, 8]], axis=0)
array([[0, 1, 2],
       [3, 4, 5],
       [6, 7, 8]])