input: 
  def tic_tac_toe_game():
      """Develop a Tic Tac Toe game in Python.
      
      Example:
      >>> tic_tac_toe_game()
      Welcome to Tic Tac Toe!
      |   |   |   |
      |   |   |   |
      |   |   |   |
      
      Your turn player 1
      Enter your move (1-9): 5
      
      |   |   |   |
      |   | X |   |
      |   |   |   |
      
      """
  
      # define the board
      board = [" " for i in range(9)]
  
      def print_board():
          row1 = "| {} | {} | {} |".format(board[0], board[1], board[2])
          row2 = "| {} | {} | {} |".format(board[3], board[4], board[5])
          row3 = "| {} | {} | {} |".format(board[6], board[7], board[8])
  
          print()
          print(row1)
          print(row2)
          print(row3)
          print()
  
      # define player turn
      def player_turn(icon):
  
          if icon == "X":
              number = 1
          elif icon == "O":
              number = 2
              
          print("Your turn player {}".format(number))
          
          choice = int(input("Enter your move (1-9): ").strip())
          if board[choice -1] == " ":
              board[choice -1] = icon
          else:
              print()
              print("That space is taken!")
  
      # check win
      def is_victory(icon):
          if (board[0] == icon and board[1] == icon and board[2] == icon) or \
              (board[3] == icon and board[4] == icon and board[5] == icon) or \
              (board[6] == icon and board[7] == icon and board[8] == icon) or \
              (board[0] == icon and board[3] == icon and board[6] == icon) or \
              (board[1] == icon and board[4] == icon and board[7] == icon) or \
              (board[2] == icon and board[5] == icon and board[8] == icon) or \
              (board[0] == icon and board[4] == icon and board[8] == icon) or \
              (board[2] == icon and board[4] == icon and board[6] == icon):
              return True
          else:
              return False
              
      # define main function
      def main():
          print("Welcome to Tic Tac Toe!")
          print_board()
          
          while True:
              player_turn("X")
              print_board()
              if is_victory("X"):
                  print("X Wins! Congratulations!")
                  break
              elif not " " in board:
                  print("It's a tie!")
                  break
  
              player_turn("O")
              print_board()
              if is_victory("O"):
                  print("O Wins! Congratulations!")
                  break
              elif not " " in board:
                  print("It's a tie!")
                  break
  
      main()
  
output:     
      tic_tac_toe_game()
  