Question

这个程序是关于定义一个类Card，它可以在调用时生成一张卡片（仅排名，不适合）。我这样做的方式与说明不同，所以现在我对这个程序的工作方式非常困惑。

import random
class Card:
    def __init__(self):
        self.__value = 0

    def deal(self):
        self.__value(random.randint(1,13))      

    def set_value(self, value):
        self.value = set_face_value

    def get_value():



    def set_face_value(self):
         faces = {1: "Ace", 2: "two", 3: "Three",  4: "Four", 5: "Five", 6: "Six", 7: "Seven", 8: "Eight", 9: "Nine", 10: "Ten", 11: "Jack", 12: "Queen", 13: "King"}
         self.face_value = faces[self.value]

    def __str__(self):
        return self.face_value

我不得不抹去它，因为我还在试图弄清楚我做错了什么。这是她对我的计划的回应：

import random
class Card:
    def __init__(self):
        self.value = 0       # THIS SHOULD BE PRIVATE - PUT __ AS THE FIRST
                             # TWO CHARACTERS IN THE NAME
        self.face_value = '' # YOU DO NOT SAVE THIS
                             # YOU SHOULD HAVE ONLY ONE DATA ATTRIBUTE


    def deal(self):
        self.set_value(random.randint(1,13))
        # THIS METHOD DOES NOT NEED TO CALL "set_value
        # IT SHOULD JUST SET THE self.__value ATTRIBUTE



    def set_value(self, value):
        self.value = value
        self.set_face_value()  # READ THE ASSIGNMENT - YOU DO NOT HAVE A
                               # SET FOR THE FACE VALUE

    # YOU SHOULD NOT HAVE ANY SUCH METHOD IN YOUR CLASS
    def set_face_value(self):
         faces = {1: "Ace", 2: "two", 3: "Three",  4: "Four", 5: "Five", 6: "Six", 7: "Seven", 8: "Eight", 9: "Nine", 10: "Ten", 11: "Jack", 12: "Queen", 13: "King"}
         self.face_value = faces[self.value]

    # YOU SHOULD HAVE A "find_face_value" METHOD THAT RETURNS THE FACE VALUE BASED ON THE VALUE OF THE
    # PRIVATE DATA ATTRIBUTE "__value"

    # THIS IS NOT CORRECT    
    def __str__(self):
        return self.face_value

这些是她的批评：

您将在班级卡片中定义deal方法：此方法将处理一张卡片（使用随机数生成器）。
您将定义一个find_face_value方法，该方法将返回卡对象的面值。您将从程序中删除display_face_value功能。
您的deal_hand函数会将对象列表传递给display_hand函数和hand stats函数，（从类卡中将5张卡片发送到函数中）

所以，我的主要问题是执行deal_hand并显示5手牌，它将显示如下：

    The 5-card hand is: 
         Jack
         Three
         Queen
         Two
         Seven
    The average value of your hand is:
         7.0
    #Also it should display like this
    print("Your card is", card)

英语不是我的第一语言，所以我很难理解它真正想要的东西这是他们要求的数据属性：

Class name:              Card
 Data attributes:        __value
 Methods:                __init__()
                         deal()
                         set_value()
                         get_value()
                         find_face_value()
                         __str__()

Answer 1

看起来你被要求以非常具体的方式做到这一点。我不相信这也是一种很好的方式。看起来你老师在开始私有时用__调用字段，好像它是一个java私有字段，请注意不是这种情况。在python中，如果要使用java样式的getter和setter，则应使用@property注释器。还有许多其他改进可以做，我没有这样做是因为要求，我希望这会有所帮助。

import random


class Card:
    def __init__(self):
        self.__value = 0

    def deal(self):
        self.__value = random.randint(1, 13)

    def set_value(self, value):
        self.__value = value

    def get_value(self):
        return self.__value

    def find_face_value(self):
        faces = {1: "Ace", 2: "two", 3: "Three", 4: "Four",
                 5: "Five", 6: "Six", 7: "Seven", 8: "Eight",
                 9: "Nine", 10: "Ten", 11: "Jack", 12: "Queen",
                 13: "King"}
        return faces[self.__value]

    def __str__(self):
        return self.find_face_value()


def main():
    card = Card()
    total = 0
    print("Your 5 hand card is:")
    for i in range(5):
        card.deal()
        print("Your card is", card)
        total += card.get_value()
    print("The average value of your hand is:")
    print(total/5)


main()

Answer 2

我做的不同，如果我理解正确的话，你想要出5张牌。

from random import *

suits = ["Clubs", "Diamonds", "Hearts", "Spades"]
values = ["Ace", "2", "3", "4", "5", "6", "7", "8", "9", "10", "Jack", "Queen", "King"]
deck = []
for s in suits:
    for v in values:
        deck.append(v + " of " + s)

shuffle(deck)
hand = deck[:5]
print (hand)

有五张牌不会在你手中重复输出。

实现`Card`类

2 个答案: