python21点小游戏

以下是一个简单的Python 21点小游戏，供参考：

import random

# 定义扑克牌的点数和花色
card_values = ['2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K', 'A']
card_suits = ['♠', '♥', '♦', '♣']

# 创建一副扑克牌
deck = [(value, suit) for value in card_values for suit in card_suits]

# 计算一张牌的点数
def card_value(card):
    if card[0] in ['J', 'Q', 'K']:
        return 10
    elif card[0] == 'A':
        return 11
    else:
        return int(card[0])

# 计算一手牌的点数
def hand_value(hand):
    value = sum(card_value(card) for card in hand)
    num_aces = len([card for card in hand if card[0] == 'A'])
    while value > 21 and num_aces:
        value -= 10
        num_aces -= 1
    return value

# 发牌
def deal(deck, n):
    hand = []
    for i in range(n):
        card = deck.pop()
        hand.append(card)
    return hand

# 打印一手牌
def print_hand(hand):
    for card in hand:
        print(card[0] + card[1], end=' ')
    print()

# 主游戏逻辑
def play_game():
    # 初始化
    deck = [(value, suit) for value in card_values for suit in card_suits]
    random.shuffle(deck)
    player_hand = deal(deck, 2)
    dealer_hand = deal(deck, 2)

    # 玩家回合
    while True:
        print('你的牌是：')
        print_hand(player_hand)
        print('总点数是：', hand_value(player_hand))
        if hand_value(player_hand) > 21:
            print('你爆了！')
            return False
        elif hand_value(player_hand) == 21:
            print('21点，你赢了！')
            return True
        else:
            choice = input('你要继续要牌吗？(y/n)')
            if choice.lower() == 'y':
                player_hand.append(deck.pop())
            else:
                break

    # 庄家回合
    while hand_value(dealer_hand) < 17:
        dealer_hand.append(deck.pop())

    # 结束游戏
    print('你的牌是：')
    print_hand(player_hand)
    print('总点数是：', hand_value(player_hand))
    print('庄家的牌是：')
    print_hand(dealer_hand)
    print('总点数是：', hand_value(dealer_hand))
    if hand_value(dealer_hand) > 21:
        print('庄家爆了，你赢了！')
        return True
    elif hand_value(dealer_hand) > hand_value(player_hand):
        print('庄家赢了！')
        return False
    elif hand_value(player_hand) > hand_value(dealer_hand):
        print('你赢了！')
        return True
    else:
        print('平局！')
        return False

# 开始游戏
while True:
    print('欢迎来玩21点！')
    if play_game():
        print('你赢了！')
    else:
        print('你输了！')
    choice = input('你要再来一局吗？(y/n)')
    if choice.lower() == 'n':
        break