Question

以下是我一直在研究的代码，一个简单的Tic Tac Toe游戏..我已经研究过这个错误，但我似乎找不到合适的解决方案代码是：

def isSpaceFree(board,move):
     return board[move]==' '


#--------------------------------------------------------------------------

def getPlayerMove(board):
    move=' '
    while move not in '1 2 3 4 5 6 7 8 9'.split() or not isSpaceFree(board,move):
        print('Your chance,what square do you want to play in ?')
        move=input()
    return int(move)
while gameIsPlaying:
    if turn == 'player':
        # Player's turn.
    drawBoard(theBoard)
    move = getPlayerMove(theBoard)

错误讯息：

Traceback (most recent call last):   
File "C:\Python33\FirstTime.py", line 162, in <module>
     move=getPlayerMove(theBoard)   
File "C:\Python33\FirstTime.py", line 82, in getPlayerMove
     while move not in '1 2 3 4 5 6 7 8 9'.split() or not isSpaceFree(board,move):
File "C:\Python33\FirstTime.py", line 75, in isSpaceFree
     return not board[move]== 'X' or board[move]=='O' TypeError: list indices must be integers, not str

Answer 1

input函数返回一个字符串。因此，在尝试将move变量用作列表索引之前，需要先强制转换它。

此功能应该有效：

 def isSpaceFree(board,move):
     return board[int(move)]==' '

甚至更好，使用原始isSpaceFree方法：

def getPlayerMove(board):
    move = -1  # initialize a 'out of range' number, not an empty string, for consistency
    while move not in range(1, 10) or not isSpaceFree(board,move):
        print('Your chance,what square do you want to play in ?')
        try:
            move = int(input())  # parse number on the fly
        except ValueError:  # if the user doesn't enter a number, display an error
            print('Please enter a number')
            move = -1

    return move

有关信息：

>>> range(1, 10)
[1, 2, 3, 4, 5, 6, 7, 8, 9]

Answer 2

问题在于move的第一个值应该是整数所以你可以使它= 10之类的东西并在调用函数

时抛出它

def getPlayerMove(board):
    move='10'
    while move not in '1 2 3 4 5 6 7 8 9'.split() or not isSpaceFree(board,int(move)):
        print('Your chance,what square do you want to play in ?')
        move=input()
    return int(move)

Answer 3

move首先是一个字符串（' '）。要将其用作列表中的索引，需要使用int。您可以使用int(move)将字符串转换为int。

你应该使用

move = 0

作为初始化，

while move not in range(1, 10) ...

作为测试，因为输入已经返回一个int。

list参数的语法出错

3 个答案: