numpy sub arrays append code example

Example 1: append value to numpy array

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

Example 2: np append row

A= [[1, 2, 3], [4, 5, 6]]
np.append(A, [[7, 8, 9]], axis=0)

    >> array([[1, 2, 3],
              [4, 5, 6],
              [7, 8, 9]])
#or 
np.r_[A,[[7,8,9]]]