old_contents: import random
  
  class GuessBoard:
      def __init__(self, min, max, target):
          self.min = min
          self.max = max
          self.target = target
  
  
  class GuessRuleBook:
  
      def GetNewBoard():
          min = 1
          max = 6
          if not isinstance(min, int): raise ValueError(f"min must be a whole number: {min}")
          if not isinstance(max, int): raise ValueError(f"max must be a whole number: {max}")
          if min > max: raise ValueError(f"min:{min} must not be greater than max:{max}")
          target = # put something here.
          return GuessBoard(min, max, target)
  
  
  print("Let's Play!")
  
  ruleBook = GuessRuleBook
  board = ruleBook.GetNewBoard()
  
  print(board.target)
  
new_contents: import random
  
  class GuessBoard:
      def __init__(self, min, max, target):
          self.min = min
          self.max = max
          self.target = target
  
  
  class GuessRuleBook:
  
      def GetNewBoard():
          min = 1
          max = 6
  
          if not isinstance(min, int): raise ValueError(f"The minimum value must be a whole number: {min}")
          if not isinstance(max, int): raise ValueError(f"The maximum value must be a whole number: {max}")
          if min > max: raise ValueError(f"The minimum value:{min} must not be greater than maximum value:{max}")
          target = random.randint(min, max)
          return GuessBoard(min, max, target)
  
  
  print("Let's Play!")
  
  ruleBook = GuessRuleBook
  board = ruleBook.GetNewBoard()
  
  print(board.target)
  
subject: Complete Task