old_contents: from agents.agent import Agent
  
  
  class HumanAgent(Agent):
      """This agent is controlled by a human, who inputs moves via stdin."""
  
      def __init__(self, reversi, color, **kwargs):
          pass
  
      def get_action(self, game_state, legal_moves):
          choice = None
          while True:
              raw_choice = input('Enter a move x,y (or pass to pass): ')
              if raw_choice == 'pass':
                  return None
              if raw_choice == 'exit' or raw_choice == 'quit':
                  quit()
              if len(raw_choice) != 3:
                  print('input must be 3 long, formatted x,y')
                  continue
              if raw_choice[1] != ',':
                  print('comma separator not found.')
                  continue
              if not raw_choice[0].isdigit() or not raw_choice[2].isdigit():
                  print('couldn\'t determine x,y from your input.')
                  continue
              choice = (int(raw_choice[0]), int(raw_choice[2]))
              break
  
          return choice
  
new_contents: from agents.agent import Agent
  
  
  class HumanAgent(Agent):
      """This agent is controlled by a human, who inputs moves via stdin."""
  
      def __init__(self, reversi, color, **kwargs):
          pass
  
      def get_action(self, game_state, legal_moves):
          choice = None
          while True:
              raw_choice = input('Enter a move x,y: ')
              if raw_choice == 'pass':
                  return None
              if raw_choice == 'exit' or raw_choice == 'quit':
                  quit()
              if len(raw_choice) != 3:
                  print('input must be 3 long, formatted x,y')
                  continue
              if raw_choice[1] != ',':
                  print('comma separator not found.')
                  continue
              if not raw_choice[0].isdigit() or not raw_choice[2].isdigit():
                  print('couldn\'t determine x,y from your input.')
                  continue
              choice = (int(raw_choice[0]), int(raw_choice[2]))
              break
  
          return choice
  
subject: remove message in HumanAgent about typing pass to pass turn, since that operation is not supported.