写一个纸牌比大小的python程序

以下是一个使用Python实现纸牌比大小的简单程序：

import random

# 定义牌面和点数
faces = ('Ace', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'Jack', 'Queen', 'King')
suits = ('Hearts', 'Diamonds', 'Clubs', 'Spades')
values = {'Ace':11, '2':2, '3':3, '4':4, '5':5, '6':6, '7':7, '8':8, '9':9, '10':10, 'Jack':10, 'Queen':10, 'King':10}

class Card:
    def __init__(self, face, suit):
        self.face = face
        self.suit = suit
        self.value = values[face]

    def __str__(self):
        return self.face + " of " + self.suit

class Deck:
    def __init__(self):
        self.cards = []
        for face in faces:
            for suit in suits:
                self.cards.append(Card(face, suit))

    def shuffle(self):
        random.shuffle(self.cards)

    def deal_card(self):
        return self.cards.pop()

class Hand:
    def __init__(self):
        self.cards = []
        self.value = 0

    def add_card(self, card):
        self.cards.append(card)
        self.value += card.value

    def __str__(self):
        hand = ""
        for card in self.cards:
            hand += card.__str__() + "\n"
        return hand

def game():
    print("Welcome to the game of Blackjack!")
    playing = True

    while playing:
        deck = Deck()
        deck.shuffle()

        player_hand = Hand()
        dealer_hand = Hand()

        player_hand.add_card(deck.deal_card())
        player_hand.add_card(deck.deal_card())
        dealer_hand.add_card(deck.deal_card())
        dealer_hand.add_card(deck.deal_card())

        print("Player's hand:")
        print(player_hand)
        print("Dealer's hand:")
        print(" <hidden card>")
        print(dealer_hand.cards[1])

        player_turn = True
        while player_turn:
            hit_or_stay = input("Do you want to hit or stay? ")
            if hit_or_stay.lower() == "hit":
                player_hand.add_card(deck.deal_card())
                print(player_hand)
                if player_hand.value > 21:
                    print("You busted! Dealer wins!")
                    player_turn = False
                    playing = False
            else:
                player_turn = False

        if player_hand.value <= 21:
            while dealer_hand.value < 17:
                dealer_hand.add_card(deck.deal_card())

            print("Player's hand:")
            print(player_hand)
            print("Dealer's hand:")
            print(dealer_hand)

            if dealer_hand.value > 21:
                print("Dealer busted! You win!")
            elif dealer_hand.value > player_hand.value:
                print("Dealer wins!")
            elif dealer_hand.value < player_hand.value:
                print("You win!")
            else:
                print("It's a tie!")

        play_again = input("Do you want to play again? ")
        if play_again.lower() != "yes":
            playing = False

game()

这个程序实现了基本的21点纸牌比大小游戏。当程序运行时，会提示用户打出“hit”或“stay”的选择，以逐步构建他们的手牌。最后，如果没有爆掉，软件将计算数值并确定胜利者。用户可以选择重新开始游戏。