一摞python风格的纸牌

创建了一个简单的类FrenchDeck

import collections

Card =collections.namedtuple('Card',['rank','suit'])
class FrenchDeck:
    ranks =[str(n) for n in list(range(2,11))+list('JQKA')]   #python3中需要使用list来定义该数据
    suits ='spades diamonds clubs hearts'.split()
    def __init__(self):
        self._cards= [Card(rank,suit) for suit in self.suits for rank in self.ranks]

    def __len__(self):
        return len(self._cards)

    def __getitem__(self, item):
        return self._cards[item]
实现类中的方法

from mine.__init__ import  *
from random import choice

beer_Card = Card('7','diamonds')   
print(beer_Card)　　

deck =FrenchDeck()
print(len(deck))    》》》52

print(deck[0])　　
print(deck[-1])
print(deck[:3])
print(deck[12::13])
print(choice(deck))　　　

for card in deck:        #doctest:+ELLIPSIS  
    print(card)           #正向迭代
# print(c)
for card in reversed(deck): #反向迭代
    print(card)

print(Card('Q','hearts') in deck)
print(Card('7','beasts') in deck)  #beasts 野兽

suit_values = dict(spades =3,hearts =2 ,diamonds=1,clubs=0)