how to extend numpy arrays python code example

Example: how to extend array in numpy

array1=np.array([[1,1,1],[2,2,2],[3,3,3]])
#syntax for appending elements to an array-> np.append(name_of_the array, elements, axis)
#along a row, the axis is 0
array1=np.append(array1, ([[4,4,4],[5,5,5]]), 0)
#along a cloumn, the axis is 1 
array1=np.append(array1, ([[1],[2],[3],[4],[5]]),1)