text: '''
  lab 3: list and set
  '''
  
  #3.1
  str_list = ['a', 'd', 'e', 'b', 'c']
  print(str_list)
  
  str_list.sort()
  print(str_list)
  
  #3.2
  str_list.append('f')
  print(str_list)
  
  #3.3
  str_list.remove('d')
  print(str_list)
  
  #3.4
  print(str_list[2])
  
  #3.5
  my_list = ['a', '123', 123, 'b', 'B', 'False', False, 123, None, 'None']
  print(len(set(my_list)))
  
  #3.6
  print(len("This is my third python lab.".split()))
  
  #3.7
  num_list = [12, 32, 43, 35]
  num_list.sort()
  print(num_list)
  #print(min(num_list))
  print(num_list[0])
  print(num_list[-1])
  
  #3.8
  game_board = [[0,0,0],
                [0,0,0],
                [0,0,0]]
  '''
  What we want to get:
               [[0,0,0]
                [0,1,0]
                [0,0,0]]
  '''
  game_board[1][1] = 1
  print(game_board)