if 语句在遍历列表时不传递 false

Question

下面的代码开始于自动化无聊的东西中的井字游戏，但我希望游戏检查每一轮是否有赢家。

我试图将每个获胜组合放在它自己的列表中，并更新每个 position 以适用于最后一次采取的行动。 然后的想法是检查这些列表之一是否全是 X 或全是 0，并且程序将宣布获胜者。

在测试时我收到错误 ValueError: 'top-L' is not in list at the line update_wincon = winconditions.index(move)

上下文的周围代码：

    for each in winconditions:
            if move in each:
                update_wincon = winconditions.index(move)
                winconditions[update_wincon] = turn
            if each[1] == 'X' and each[2] =='X' and each[3] == 'X' or each[1] == '0' and each[2] =='0' and each[3] == '0':
                print(str(turn) + ' is the winner!')
                break
        print(winconditions)

在此特定部分中，我尝试使用 for 循环遍历 winconditions 中的列表，以查看用户输入的移动是否在该列表中，如果是，则将其更新为当前轮次（'X' 或 '0' ）。 似乎它没有在不包含移动的 winconditions 中传递列表。 不知道我做错了什么？

完整代码如下。

#board is stored as a dictionary
theBoard = {'top-L': ' ', 'top-M': ' ', 'top-R': ' ',
            'mid-L': ' ', 'mid-M': ' ', 'mid-R': ' ',
            'bot-L': ' ', 'bot-M': ' ', 'bot-R': ' '}

#function to convert dictionary into visual board

def printBoard(board):
    print(board['top-L'] + '|' + board['top-M'] + '|' + board['top-R'])
    print('-+-+-')
    print(board['mid-L'] + '|' + board['mid-M'] + '|' + board['mid-R'])
    print('-+-+-')
    print(board['bot-L'] + '|' + board['bot-M'] + '|' + board['bot-R'])

#winconditions stored as dictionary for reference to check if there is a winner
winconditions = [['top-L', 'top-M', 'top-R'], ['mid-L', 'mid-M', 'mid-R'], ['bot-L', 'bot-M', 'bot-R'],
                 ['top-L', 'mid-L', 'bot-L'], ['top-M', 'mid-M', 'bot-M'], ['top-R', 'mid-R', 'bot-R'],
                 ['top-L', 'mid-M', 'bot-R'], ['top-R', 'mid-M', 'bot-L']]

turn = 'X'

while True:
    printBoard(theBoard)
    print('Turn for ' + turn + '. Move on which space?')
    move = str(input())
    if move not in theBoard:
        print('please enter top/mid/bot-L/M/R')
        continue
    theBoard[move] = turn
    for each in winconditions:
        if move in each:
            update_wincon = winconditions.index(move)
            winconditions[update_wincon] = turn
        if each[1] == 'X' and each[2] =='X' and each[3] == 'X' or each[1] == '0' and each[2] =='0' and each[3] == '0':
            print(str(turn) + ' is the winner!')
            break
    print(winconditions)
    if turn == 'X':
        turn = '0'
    else:
        turn = 'X'

Answer 1

您的 winconditions 是列表列表，因此您无法检查其中是否存在单个位置。 您遍历保存在“每个”变量中的每一行可能的风，因此更改此行：

至

update_wincon = winconditions.index(move)

至

update_wincon = each.index(move)

然后，您将留下下一个错误。

此实现应根据您的需要工作：

#board is stored as a dictionary
theBoard = {'top-L': ' ', 'top-M': ' ', 'top-R': ' ',
            'mid-L': ' ', 'mid-M': ' ', 'mid-R': ' ',
            'bot-L': ' ', 'bot-M': ' ', 'bot-R': ' '}

#function to convert dictionary into visual board

def printBoard(board):
    print(board['top-L'] + '|' + board['top-M'] + '|' + board['top-R'])
    print('-+-+-')
    print(board['mid-L'] + '|' + board['mid-M'] + '|' + board['mid-R'])
    print('-+-+-')
    print(board['bot-L'] + '|' + board['bot-M'] + '|' + board['bot-R'])

#winconditions stored as dictionary for reference to check if there is a winner
winconditions = [['top-L', 'top-M', 'top-R'], ['mid-L', 'mid-M', 'mid-R'], ['bot-L', 'bot-M', 'bot-R'],
                 ['top-L', 'mid-L', 'bot-L'], ['top-M', 'mid-M', 'bot-M'], ['top-R', 'mid-R', 'bot-R'],
                 ['top-L', 'mid-M', 'bot-R'], ['top-R', 'mid-M', 'bot-L']]

turn = 'X'
play = True
while play:
    printBoard(theBoard)
    print('Turn for ' + turn + '. Move on which space?')
    move = str(input())
    if move not in theBoard.keys():
        print('please enter top/mid/bot-L/M/R')
        continue
    theBoard[move] = turn
    for each in winconditions:
        if (theBoard[each[0]] == 'X' and theBoard[each[1]] =='X' and theBoard[each[2]] == 'X') or (each[0] == '0' and each[1] =='0' and each[2] == '0'):
            print(str(turn) + ' is the winner!')
            play = False
    if turn == 'X':
        turn = '0'
    else:
        turn = 'X'

Answer 2

问题是“winning_conditions”包含列表，而不是单个字符串。 该行应该是

update_wincon = winconditions.index(each)