input: Write a function to develop a Tic Tac Toe game in Python. The game should include functions for printing the board, taking player turns, checking for victory conditions, and the main game loop.
  
  def tic_tac_toe():
      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
  
      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
  
  assert tic_tac_toe()
  assert tic_tac_toe()
  assert tic_tac_toe()
  assert tic_tac_toe()
  assert tic_tac_toe()
output: def tic_tac_toe():
      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
  
      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