new_contents: import numpy as np
  
  # init
  matrix_a = np.array([2,3,4])
  print matrix_a
  
  # shape
  print matrix_a.shape
  
  # reshape
  
  # ndim
  print matrix_a.ndim
  
  # dtype
  print matrix_a.dtype
  
  # itemsize
  print matrix_a.itemsize
  
  # size
  print matrix_a.size
  
  
subject: Add numpy exercise todo