# -*- coding: UTF-8 -*-
from collections import namedtuple
import json
#只包含属性的类
Card = namedtuple('Card',['rank','suit']) #rank 牌面的大小 suit 牌面的花色
# c1 = Card(2,'红心')
# print(c1)
# print(c1.rank,c1.suit)
class FrankDeck:
    ranks = [str(n) for  n in range(2,11)] + list('JQKA')
    suits = ['红心','方块','梅花','黑桃']
    def __init__(self):
        self._cards = [Card(rank,suit) for rank in FrankDeck.ranks
                                        for suit in FrankDeck.suits]
        # for suit in FrankDeck.suits:
        #     for rank in FrankDeck.ranks:
        #         self._cards = Card(suit,rank)
    def __len__(self):
        return len(self._cards)
    def __getitem__(self, item):
        return self._cards[item]
    def __setitem__(self, key, value):
        self._cards[key] = value
    def __str__(self):
        return json.dumps(self._cards,ensure_ascii=False) #不让中文转义
deck = FrankDeck()
print(deck[11]) #选牌
from random import choice
print(choice(deck)) #抽牌
from random import shuffle
shuffle(deck)     #洗牌
print(deck[11]) #选牌
print(deck[:-1])
print(deck[:5])
print(deck) #类中加了__str__方法所以打印出来不再是内存地址