text: my_list = [1, 2, 3]
  
  print my_list
  print "Unique ID of my_list is", id(my_list)
  
  my_list.append(4)
  my_list.append(5)
  
  print "\nAfter Update\n"
  print my_list
  print "Unique ID of my_list is", id(my_list)