游戏循环中函数输出的python范围不评估

Posted 2023-03-10

【中文标题】游戏循环中函数输出的python范围不评估

【英文标题】：python Scopage of a function output within gameloop not evaluating

【发布时间】：2018-06-15 17:18:21

【问题描述】：

我的问题是，在gameloop中调用函数check_win后， 即使函数评估为假（我已经检查过，所以这是 情况下），我将此错误值分配给循环内的gamePlaying， 但是游戏循环gamePlaying 条件仍然评估为真 并继续前进。

def check_win(): #function checks for three in a row across, down, and diagonals
        for x in range (0, 3) :
            y = x*3
            if (board[y] == board[(y + 1)] and board[y] == board[(y + 2)]):
                gamePlaying = False
            else:
                gamePlaying = True
            if (board[x] == board[(x + 3)] and board[x] == board[(x + 6)]):
                gamePlaying = False
            else:
                gamePlaying = True
            if((board[0] == board[4] and board[0] == board[8]) or 
                (board[2] == board[4] and board[4] == board[6])):
                gamePlaying = False
            else:
                gamePlaying = True
        return(gamePlaying)

    currentPlayer = [first_player,second_player] #creates list to iterate over turns
    gamePlaying = True #bool for gameloop

    while gamePlaying: #main game loop
        for i in currentPlayer: #iterates over current player to switch turns

            draw_board()
            place_move = int(input(first_move + ' what is your move? ')) #inputs then places move for first_player
            board[place_move] = first_player
            gamePlaying = check_win() #should take bool output of check_win and store to cont or end gameloop

            draw_board()
            place_move = int(input(second_move + ' what is your move? ')) #inputs then places move for second_player
            board[place_move] = second_player
            gamePlaying = Check_win() #should take bool output of check_win and store to cont or end gameloop

【问题讨论】：

其他check win不应该大写但还是不行

【参考方案1】：

问题在于，当您打算使用 elif 时，您使用的是 if 语句。请参阅docs。

但是，您可能想要做的是 return False 在这些点上，因为这将允许函数提前退出，您将不得不担心 gamePlaying 会被稍后的 if 语句设置回 True .