from collections import namedtuple
import random

# 定义扑克牌结构
Card = namedtuple('Card', ['rank', 'suit'])

class FrenchDeck:
    # 扑克牌点数
    ranks = [str(n) for n in range(2, 11)] + list('JQKA')
    # 扑克牌花色
    suits = 'spades diamonds clubs hearts'.split()
    
    def __init__(self):
        # 创建一副完整的扑克牌
        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, position):
        return self._cards[position]
    
    def shuffle(self):
        """洗牌"""
        random.shuffle(self._cards)
    
    def deal(self, num_cards):
        """发牌"""
        if num_cards > len(self._cards):
            raise ValueError("Not enough cards in the deck")
        return [self._cards.pop() for _ in range(num_cards)]

# 使用示例
if __name__ == "__main__":
    deck = FrenchDeck()
    print(f"一副扑克牌有 {len(deck)} 张")
    
    # 洗牌
    deck.shuffle()
    
    # 发5张牌
    hand = deck.deal(5)
    print("\n发到的5张牌：")
    for card in hand:
        print(f"{card.rank} of {card.suit}")