一摞Python风格的纸牌

import collections
from random import choice

# namedtuple 是一个可命名的元祖，它可以让你使用属性式的标签来访问元祖中的元素，而不是通过索引
Card = collections.namedtuple('Card', ['rank', 'suit'])

class FrenchDesk:
    ranks = [str(n) for n in range(2, 11)] + list('JQKA')
    suite = '黑桃 方块 梅花 红星'.split()

    def __init__(self):
        self._cards = [Card(rank, suit) for suit in self.suite
                       for rank in self.ranks]

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

    def __getitem__(self, position):
        return self._cards[position]

# 手工设置一张牌
beer_card = Card('7', '方块')
print("手工设置一张牌：")
print(beer_card.rank, beer_card.suit)

deck = FrenchDesk()
print(f"总共有 {len(deck)} 张牌。")

print(deck[0])
print(deck[-1])

# 随机选一张牌
# 函数random.choice 可以从序列中随机获取一项的函数
print("随机获取的牌：")
print(choice(deck))
print(choice(deck))
print(choice(deck))

Fluent Python 1-1