input: Write a function to implement an interactive text-based RPG game in Python that gives the player options to move around in an environment and battle monsters.
  
  def start_game():
   # Create player, rooms and monsters
   player = Player()
  
  # Main game loop
  while True:
   # Show the current room;
   print(f'You are in {player.location}.')
   # Display available actions
   print('Available actions: move, fight')
   # Get user's action
   response = input('What would you like to do? ').lower()
  
   # Moving to a new room
   if response == 'move':
   # Get the list of available rooms
   # Get the user's destination
   # Move the player to the chosen room
  
  # Fighting a monster
   if response == 'fight':
   # Get all monsters in the current room
   # Get the user's chosen monster
   # Initiate a battle between the player and the monster
  
  # End of the game
   if player.health <= 0:
   print ('You have been defeated!')
   break
  
  if __name__ == '__main__':
   start_game()
  
  assert start_game() is None
output: 
  def start_game():
      # Create player, rooms and monsters
      player = Player()
  
      # Main game loop
      while True:
          # Show the current room;
          print(f'You are in {player.location}.')
          # Display available actions
          print('Available actions: move, fight')
          # Get user's action
          response = input('What would you like to do? ').lower()
  
          # Moving to a new room
          if response == 'move':
              available_rooms = player.get_available_rooms()
              print(f'Available rooms: {", ".join(available_rooms)}')
              destination = input('Where would you like to go? ').lower()
              if destination in available_rooms:
                  player.move(destination)
              else:
                  print('Invalid destination.')
  
          # Fighting a monster
          elif response == 'fight':
              monsters = player.get_monsters_in_room()
              if not monsters:
                  print('No monsters here.')
              else:
                  print(f'Monsters in the room: {", ".join(monsters)}')
                  chosen_monster = input('Which monster would you like to fight? ').lower()
                  if chosen_monster in monsters:
                      player.fight(chosen_monster)
                  else:
                      print('Invalid monster choice.')
  
          # End of the game
          if player.health <= 0:
              print('You have been defeated!')
              break
  