如何在Python中切换tic-tac-toe游戏中的两个玩家？

class Player:
    def __init__(self, name, marker):
        self.name = name
        self.marker = marker

def print_board(board):
    for row in board:
        print(" ".join(row))

def check_win(board, marker):
    # 检查是否有一方获胜
    # ...

def check_draw(board):
    # 检查是否平局
    # ...

def switch_player(current_player, player1, player2):
    if current_player == player1:
        return player2
    else:
        return player1

def play_game():
    player1 = Player("Player 1", "X")
    player2 = Player("Player 2", "O")
    current_player = player1

    board = [[" " for _ in range(3)] for _ in range(3)]

    while True:
        print_board(board)
        print(f"{current_player.name}'s turn:")
        row, col = input("Please enter row and column (separated by space): ").split()
        row = int(row)
        col = int(col)

        board[row][col] = current_player.marker

        if check_win(board, current_player.marker):
            print_board(board)
            print(f"{current_player.name} wins!")
            break
        elif check_draw(board):
            print_board(board)
            print("It's a draw!")
            break

        current_player = switch_player(current_player, player1, player2)

play_game()