Add new row to numpy array

How to append rows to a numpy matrix

import numpy as np    
arr = np.empty((0,3), int)
print("Empty array:")
print(arr)
arr = np.append(arr, np.array([[10,20,30]]), axis=0)
arr = np.append(arr, np.array([[40,50,60]]), axis=0)
print("After adding two new arrays:")
print(arr)

Add new row to numpy array

  newrow = [1,2,3]
  A = numpy.vstack([A, newrow])

Source: stackoverflow.com

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