old_contents: class Game:
      '''Represents the game being played'''
      def __init__(self):
          pass
  
  
  class Player:
      '''Represents a player of the game'''
      def __init__(self):
          pass
  
  
new_contents: class Game:
      '''Represents the game being played'''
      def __init__(self):
          pass
  
  
  class Player:
      '''Represents a player of the game'''
      def __init__(self):
          pass
  
  
  class Place:
      '''Represents a position of the game'''
      def __init__(self):
          pass
  
  
  class Square(Place):
      '''
      Represents a position of for a game
      where positions are 'squares'
      (such as Monopoly)
      '''
      def __init__(self):
          pass
  
subject: Add square classes