numpy array extend code example

Example 1: 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)

Example 2: numpy append number to array

import numpy as np
a = np.array([1, 2, 3])
newArray = np.append(a, [10, 11, 12])