Question

在底部，我创建一个牌组然后发起一个玩家。然后我尝试用draw_card（）绘制一张卡片并打印出来。而不是卡，我得到'没'。有人可以解释一下原因吗？这是我创建类的第一个项目，这应该是一个快速的实践和改进的程序;所以我是新手，可能会犯很多新手错误。这是代码。

import random


numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 'jack', 'queen', 'king', 'ace']
suits = ['hearts', 'diamonds', 'clubs', 'spades']
deck = []

class Card:

    def __init__(self):
        pass

    # print the current card
    def __str__(self):
        print(f'{numbers} of {suits}')


class Deck(Card):
    def __init__(self):
        super().__init__()

    # create a new deck of cards
    def create_deck(self):
        for suit in suits:
            for number in numbers:
                deck.append([number, suit])
        return deck

    # shuffle the deck of cards before the start of the game
    def shuffle_deck(self):
        random.shuffle(deck)
        return deck

class Player(Deck):

    def __init__(self):
        super().__init__()
        self.hand = []
        self.count_cards = 0
        self.score = 0

    # draw a card from the deck
    def draw_card(self):
        drawn_card = self.hand.append(deck[-1])
        print(drawn_card)

    # count the cards in the players hand
    def count_hand(self):
        self.count_cards = len(self.hand)
        print(self.count_cards)

    # calculate the score each time the player wins
    def calculate_score(self):
        pass


d = Deck()
d.create_deck()
d.shuffle_deck()
ezekiel = Player()
ezekiel.draw_card()
ezekiel.count_hand()

当我尝试绘制卡片时，为什么会返回None对象？

0 个答案: