Question

我正在尝试使用Card类中的[identityNumberValidator] = "element == 1 ? '' : null"和card_number(方法来确定Rule类中的last_card西装和号码。

card_suit()

当我访问该功能时，它们会保存卡并仅适用于卡变量，也适用于最后一张卡

现在我得到：

class Card:

    def __init__(self, card):
        self.card = card
        self.number = self.card_number(card)
        self.suit = self.card_suit(card)

    def card_number(self, card):
        card = self.card
        number = card[0]
        return number


    def card_suit(self, card):
        card = self.card
        suit = card[-1]
        return suit

class Rules(Card):

    def __init__(self, last_card, card):
        Card.__init__(self, card)
        self.last_card = last_card
        self.last_card_number = self.card_number(self.last_card)
        self.last_card_suit = self.card_suit(self.last_card)

我期望：

a = Rules(last_card="As", card = "5c")
print(a.card) -> "5c"
print(a.number)-> "5"
print(a.suit) -> "c"

print("last_card")
print(a.last_card) -> "As"
print(a.last_card_number) -> "5"
print(a.last_card_suit) -> "c"

Answer 1

正如我在评论中提到的那样，当您需要Rules仅保存两个Card实例时，您不需要Rules成为Card的超类。 / p>

您可以按照以下步骤修改您的班级

class Card:

    #Instantiating instance attributes
    def __init__(self, card):
        self.card = card
        self.number = self.card[0]
        self.suit = self.card[-1]

class Rules:

    #Two instances of Card class
    def __init__(self, last_card, card):
        self.last_card = Card(last_card)
        self.card = Card(card)

a = Rules(last_card="As", card = "5c")
print(a.card.card)
print(a.card.number)
print(a.card.suit)

print(a.last_card.card)
print(a.last_card.number)
print(a.last_card.suit)

输出将为

5c
5
c
As
A
s

您甚至可以摆脱Rules类，并制作两个Card类的实例，并改为使用它们

last_card = Card('As')
card = Card('5c')

Answer 2

这里的问题是您要覆盖card类中方法的参数Card：

def card_number(self, card):
    card = self.card
    number = card[0]
    return number


def card_suit(self, card):
    card = self.card
    suit = card[-1]
    return suit

在此处删除card = self.card行，它应该可以正常工作。它应该看起来像这样：

def card_number(self, card):
    number = card[0]
    return number


def card_suit(self, card):
    suit = card[-1]
    return suit

Answer 3

以这种方式更新代码，

class Card:

    def __init__(self, card):
        self.card = card
        self.number = self.card_number(card)
        self.suit = self.card_suit(card)

    @staticmethod
    def card_number(card):
        # card = self.card
        number = card[0]
        return number

    @staticmethod
    def card_suit(card):
        # card = self.card
        suit = card[-1]
        return suit


class Rules(Card):

    def __init__(self, last_card, card):
        Card.__init__(self, card)
        self.last_card = last_card
        self.last_card_number = self.card_number(self.last_card)
        self.last_card_suit = self.card_suit(self.last_card)

无法通过具有类继承的其他类正确使用函数

3 个答案: