input: 
  class TicTacToe:
      """Create a TicTacToe game in Python.
      The game allows players to take turns marking spaces on a 3x3 board.
      The game checks for a win condition where a player has aligned three of their marks either horizontally, vertically, or diagonally.
      
      Example:
      >>> game = TicTacToe()
      >>> game.board = [['x', 'x', 'x'], ['o', '_', 'o'], ['_', 'o', '_']]
      >>> game.check_win()
      True
      
      >>> game = TicTacToe()
      >>> game.board = [['_', '_', 'o'], ['_', 'o', '_'], ['o', '_', '_']]
      >>> game.check_win()
      True
      """
  
      def __init__(self):
          self.board = [['_' for _ in range(3)] 
                         for _ in range(3)]
          self.turn = 'x'
          
      def display(self):
          for row in self.board:
              print(' '.join(row))
  
      def check_win(self):
          board = self.board
  
          # check if the player with the current turn has a row of three
          for row in self.board:
              if row.count(self.turn) == 3:
                  return True
              
          # check if the player with the current turn has a column of three
          for col in range(3):
              if board[1][col] == board[1][col] and board[1][col] == board[2][col] and board[2][col] == self.turn:
                  return True
              
          # check for the two diagonals
          if board[0][0] == board[1][1] and board[1][1] == board[2][2] and board[2][2] == self.turn:
              return True
          if board[2][0] == board[1][1] and board[1][1] == board[0][2] and board[0][2] == self.turn:
              return True
          return False
  
output:     def make_move(self, row, col):
          if self.board[row][col] == '_':
              self.board[row][col] = self.turn
              if self.check_win():
                  return f"Player {self.turn} wins!"
              self.turn = 'o' if self.turn == 'x' else 'x'
          else:
              return "Invalid move, try again."
  
      def reset(self):
          self.board = [['_' for _ in range(3)] for _ in range(3)]
          self.turn = 'x'