input: Write a function to develop a Tic Tac Toe game in Python. The function should define the game board, print the board, handle player turns, check for victory conditions, and manage the main game loop. The function should return the final outcome of the game, whether it is a win for "X", a win for "O", or a tie.
  
  def tic_tac_toe_game():
      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()
  
      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!")
  
      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
          
      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!")
                  return "X Wins"
              elif not " " in board:
                  print("It's a tie!")
                  return "Tie"
  
              player_turn("O")
              print_board()
              if is_victory("O"):
                  print("O Wins! Congratulations!")
                  return "O Wins"
              elif not " " in board:
                  print("It's a tie!")
                  return "Tie"
  
      return main()
  
  assert tic_tac_toe_game() in ["X Wins", "O Wins", "Tie"]
output: def tic_tac_toe_game():
      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()
  
      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!")
  
      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
          
      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!")
                  return "X Wins"
              elif not " " in board:
                  print("It's a tie!")
                  return "Tie"
  
              player_turn("O")
              print_board()
              if is_victory("O"):
                  print("O Wins! Congratulations!")
                  return "O Wins"
              elif not " " in board:
                  print("It's a tie!")
                  return "Tie"
  
      return main()