text: from random import randint
  
  print("Math Dice")
  print("https://github.com/coding-horror/basic-computer-games")
  print()
  print(
      """This program generates images of two dice.
  When two dice and an equals sign followed by a question
  mark have been printed, type your answer, and hit the ENTER
  key.
  To conclude the program, type 0.
  """
  )
  
  
  def print_dice(n: int) -> None:
      def print_0() -> None:
          print("|     |")
  
      def print_2() -> None:
          print("| * * |")
  
      print(" ----- ")
  
      if n in [4, 5, 6]:
          print_2()
      elif n in [2, 3]:
          print("| *   |")
      else:
          print_0()
  
      if n in [1, 3, 5]:
          print("|  *  |")
      elif n in [2, 4]:
          print_0()
      else:
          print_2()
  
      if n in [4, 5, 6]:
          print_2()
      elif n in [2, 3]:
          print("|   * |")
      else:
          print_0()
  
      print(" ----- ")
  
  
  def main() -> None:
  
      while True:
          d1 = randint(1, 6)
          d2 = randint(1, 6)
          guess = 13
  
          print_dice(d1)
          print("   +")
          print_dice(d2)
          print("   =")
  
          tries = 0
          while guess != (d1 + d2) and tries < 2:
              if tries == 1:
                  print("No, count the spots and give another answer.")
              try:
                  guess = int(input())
              except ValueError:
                  print("That's not a number!")
              if guess == 0:
                  exit()
              tries += 1
  
          if guess != (d1 + d2):
              print(f"No, the answer is {d1 + d2}!")
          else:
              print("Correct!")
  
          print("The dice roll again....")
  
  
  if __name__ == "__main__":
      main()
  