我目前正在进行一个项目，需要实现一个Minimax算法来创建一个井字游戏。在某个点上，我在比较元组和浮点数，虽然我知道这实际上是无法完成的，但我不知道这个问题从何而来，也不知道如何修复。如果有人能帮助我理解那将是非常棒的。谢谢！

这是我的代码

import copyX = "X"O = "O"EMPTY = Nonedef initial_state():    """    Returns starting state of the board.    """    return [[EMPTY, EMPTY, EMPTY],            [EMPTY, EMPTY, EMPTY],            [EMPTY, EMPTY, EMPTY]]def player(board):    Xboard_count = board[0].count(X) + board[1].count(X) + board[2].count(X)    if Xboard_count % 2 == 1:        return 0    else:        return Xdef actions(board):    """    Returns set of all possible actions (i, j) available on the board.    """    move = []    for i in range(3):        for j in range(3):            if board[i][j] == EMPTY:                move.append((i, j))    return movedef result(board, move):    """    Returns the board that results from making move (i, j) on the board.    """    if move not in actions(board):        raise Exception("this action is not a valid action")    dcopb = copy.deepcopy(board)    dcopb[move[0]][move[1]] = player(board)    return dcopbdef winner(board):    """    Returns the winner of the game, if there is one.    """    for x in range(3):        if board[x][0] == board[x][1] == board[x][2] != EMPTY:            return board[x][0]    for y in range(3):        if board[0][y] == board[1][y] == board[2][y] != EMPTY:            return board[0][y]    if board[0][0] == board[1][1] == board[2][2] != EMPTY:        return board[0][0]    if board[2][0] == board[1][1] == board[0][2] != EMPTY:        return board[2][0]    else:        return Nonedef terminal(board):    """    Returns True if game is over, False otherwise.    """    if winner(board) == X:        return True    elif winner(board) == O:        return True    for x in range(3):        for y in range(3):            if board[x][y] is None:                return False    return True    ('si winner est égal à X :\n'     '            return True\n'     '        si winner est égal à 0\n'     '            return true \n'     '            \n'     '        si le nombre de cases vides == 0\n'     '            return true\n'     '        else:\n'     '            return false')def utility(board):    """    Returns 1 if X has won the game, -1 if O has won, 0 otherwise.    """    if winner(board) == X:        return 1    if winner(board) == 0:        return -1    else:        return 0def minimax(board):    """    Returns the optimal action for the current player on the board.    """    if terminal(board):        return None    if player(board) == X:        v = v = float('-inf')        for move in actions(board):            temp = MinValue(result(board, move))            if temp > v:                v = temp                best = move    else:        v = float('inf')        for move in actions(board):            temp = MaxValue(result(board, move))            if temp < v:                v = temp                best = move    return best    def MaxValue(board):    if terminal(board):        return utility(board), None    v = float('-inf')    for move in actions(board):        v = max(v, MinValue(result(board, move)))    returndef MinValue(board):    if terminal(board):        return utility(board), None    v = float('inf')    for move in actions(board):        v = min(v, MaxValue(result(board, move)))    return v

我得到了这个确切的错误消息

TypeError: ‘>’ not supported between instances of ‘tuple’ and ‘float’

回答：

首先，MinValue和MaxValue函数存在问题，它们有时会返回两个值而不是一个值。

然后，出现了同样的TypeError，这次是在比较NoneType变量和浮点数时出现了问题。结果发现只是一个小错误，因为我的MaxValue函数没有返回任何值。