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如何在不同类的实例上调用类方法\uu init__

initialization oop python

-1

Sasja Wijdenes · 技术社区 · 4 年前

我正在用python创建一个井字游戏。我正在尝试从我的Board类中对类中的boardState对象调用update方法 初始化 轮到我上课了。当我运行它时 NameError: name boardState is not defined .


class Board:
    def __init__(self, player1 =  "player1", player2 = "player2"):
        self.p1 = player1
        self.p2 = player2
        self.matrix = MATRIX
        self.winner = 'none'
        self.available = getAvailable(self.matrix)
        
    def update(self):
        clear()
        getAvailable(self.matrix)
        self.show()

class Turn:
        def __init__(self, sym):
            self.sym = sym
            boardState.update()
            terminalState(boardState, self.sym, available)
            print(f"{self.sym}'s turn:")

def main():
    boardState = Board()
    altTurns()

2 回复 | 直到 4 年前

Ohad Sharet 4 年前

如果您在引用之前没有定义“boardState”,则会出现此错误,

在使用之前,需要将其设置为新的Board对象

class Board:
    def __init__(self, player1 =  "player1", player2 = "player2"):
        self.p1 = player1
        self.p2 = player2
        self.matrix = MATRIX
        self.winner = 'none'
        self.available = getAvailable(self.matrix)
        
    def update(self):
        clear()
        getAvailable(self.matrix)
        self.show()

class Turn:
        def __init__(self, sym):
            self.sym = sym
            boardState = Board() #the line I added
            boardState.update()
            terminalState(boardState, self.sym, available)
            print(f"{self.sym}'s turn:")

这应该可以解决您的问题

Samwise 4 年前

如果你想 Turn 对象以访问 boardState 在中创建的对象 main() (和 main 从而可以访问更新的 boardState公司 ),您应该将其作为参数传入,以允许所有相关函数访问它。

我假设 转动 创建人 altTurns 所以 备降转弯 本身应该获取一个可以用来创建初始 转动 .

class Turn:
        def __init__(self, sym, boardState):
            self.sym = sym
            boardState.update()
            terminalState(boardState, self.sym, available)
            print(f"{self.sym}'s turn:")

def altTurns(boardState):
    sym = None  # or something?
    turn = Turn(sym, boardState)
    # more turns happen?

def main():
    boardState = Board()
    altTurns(boardState)
    # our boardState has now been updated by Turn()

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