用python实现21点小游戏，供大家参考，具体内容如下

from random import shuffle
import random

import numpy as np

from sys import exit

# 初始化扑克牌
playing_cards = {
    "黑桃A": 1, "黑桃2": 2, "黑桃3": 3, "黑桃4": 4, "黑桃5": 5, "黑桃6": 6, "黑桃7": 7, "黑桃8": 8, "黑桃9": 9, "黑桃10": 10,
    "黑桃J": 10, "黑桃Q": 10, "黑桃K": 10,
    "红桃A": 1, "红桃2": 2, "红桃3": 3, "红桃4": 4, "红桃5": 5, "红桃6": 6, "红桃7": 7, "红桃8": 8, "红桃9": 9, "红桃10": 10,
    "红桃J": 10, "红桃Q": 10, "红桃K": 10,
    "梅花A": 1, "梅花2": 2, "梅花3": 3, "梅花4": 4, "梅花5": 5, "梅花6": 6, "梅花7": 7, "梅花8": 8, "梅花9": 9, "梅花10": 10,
    "梅花J": 10, "梅花Q": 10, "梅花K": 10,
    "方块A": 1, "方块2": 2, "方块3": 3, "方块4": 4, "方块5": 5, "方块6": 6, "方块7": 7, "方块8": 8, "方块9": 9, "方块10": 10,
    "方块J": 10, "方块Q": 10, "方块K": 10
}
# 扑克牌面
poker_name = list(playing_cards.keys())

# 扑克牌的数量
poker_count = 1
poker_list = poker_count*poker_name

# 用于判断手中的牌是否有A，再根据牌面判断A是否取值1还是11
four_a = {'黑桃A', '红桃A', '梅花A', '方块A'}

# 计分器
total_score = np.array([0, 0])

# 记录回合数
game_round = 1


def random_cards(poker_name_list):
    """
    定义洗牌函数:重新对牌进行随机排列
    """
    shuffle(poker_name_list)


def score_count(hand_poker):
    """
    计算手中牌的分数
    :param hand_poker:一个含有牌名的列表
    :return: 手中牌 的分数poker_score
    """
    # 声明一个变量，记录牌的总分数
    poker_score = 0
    # 标记：判断是否有A的标记，默认没有
    have_a = False

    # 计算手中牌的分数
    for k in hand_poker:
        poker_score += playing_cards[k]

    # 判断手中的牌是否含有A，再根据A的规则进行分数的计算
    for i in hand_poker:
        if i in four_a:
            have_a = True
            break
        else:
            continue

    if have_a:
        if poker_score + 10 <= 21:
            poker_score = poker_score + 10

    return poker_score


def who_win(your_score, pc_score):
    """
    判断游戏的胜负
    :param your_score: 玩家分数
    :param pc_score: 电脑分数
    :return: 胜负的数组
    """
    if your_score > 21 and pc_score > 21:
        print('平局')
        return np.array([0, 0])
    elif your_score > 21 and pc_score <= 21:
        print('对不起，玩家输了')
        return np.array([0, 1])
    elif your_score <= 21 and pc_score > 21:
        print('恭喜！！玩家胜利了')
        return np.array([1, 0])
    elif your_score <= 21 and pc_score <= 21:
        if your_score > pc_score:
            print('恭喜！！玩家胜利了')
            return np.array([1, 0])
        elif your_score < pc_score:
            print('对不起，玩家输了')
            return np.array([0, 1])
        else:
            print('平局!!')
            return np.array([0, 0])


def if_get_next_poker():
    """
    是否继续要牌
    """
    if_continue = input("是否继续要下一张牌？(Y/N)>>>>:")
    if if_continue.upper() == "Y":
        return get_one_poker()

    elif if_continue.upper() == "N":
        print('玩家停止叫牌')
        return False
    else:
        print("输入有误，请重新输入")
        return if_get_next_poker()


def get_one_poker():
    """
    发牌函数：随机将poker_list里的牌取出一张
    :return:
    """
    return poker_list.pop(random.randint(0, len(poker_list)-1))


def continue_or_quit():
    """
    一轮游戏结束后，询问玩家是否进行下一轮
    """
    if_next_round = input("是否进行下一轮游戏(Y/N)>>>>:")
    if if_next_round.upper() == 'Y':
        # 判断扑克牌是否玩的了下一轮
        if len(poker_list) <= 15:
            print('对不起，剩余牌数不足，无法进行下一轮，游戏结束。')
            exit(1)
        else:
            return True
    elif if_next_round.upper() == "N":
        print("玩家不玩了。游戏结束！！")
        exit(1)
    else:
        print("输入有误，请重新输入")
        return continue_or_quit()


def start_game_init_two_poker(poker_database):
    """
    初始化游戏，给玩家和电脑随机发两张牌
    :param poker_database: 牌堆
    :return: 玩家和电脑的初始牌面列表
    """
    return [poker_database.pop(random.randint(0, len(poker_list)-1)),
            poker_database.pop(random.randint(0, len(poker_list)-1))]


def every_round(porker_list):
    """
    每一轮游戏的流程
    :param porker_list:牌堆
    :return:游戏的获胜者
    """
    # 声明一个变量，代表玩家手里的牌
    your_hand_poker = []
    # 声明一变量，代表电脑手里的牌
    pc_hand_poker = []
    # 游戏开始，先从牌堆中取两张牌
    you_init_poker = start_game_init_two_poker(porker_list)
    pc_init_poker = start_game_init_two_poker(porker_list)
    # 展示玩家获得的扑克
    print(f"玩家所获得的牌是：{you_init_poker[0]}和{you_init_poker[1]}")
    print(f"电脑所获得的第一张牌是：{pc_init_poker[0]}")
    # 玩家和电脑得到所发的两张扑克牌
    your_hand_poker.extend(you_init_poker)
    pc_hand_poker.extend(pc_init_poker)
    # 计算初始扑克的分数
    your_score = score_count(your_hand_poker)
    pc_score = score_count(pc_hand_poker)
    # 根据初始牌面分数，判断是否能有21点，如果有直接使用判断输赢函数
    if your_score == 21 or pc_score == 21:
        print("初始牌中有21点了。")
        return who_win(your_score, pc_score)
    # 如果没有，根据自己手中的牌，判断是否要牌。
    else:
        while True:
            get_new_poker = if_get_next_poker()

            # 玩家要牌
            if get_new_poker != False:
                # 将新牌拿到手里并重新计算手里的牌的分数
                your_hand_poker.append(get_new_poker)
                print(f"玩家手里的牌是{your_hand_poker}")
                your_score = score_count(your_hand_poker)
                if your_score > 21:
                    print("玩家的牌已经超过21点")
                    print(f"电脑手里的牌是{pc_hand_poker}")
                    return who_win(your_score, pc_score)
                else:
                    continue
            # 玩家停止要牌，则电脑开始要牌
            elif get_new_poker == False:
                # 电脑要牌规则一：只要比玩家分数就要牌
                # while pc_score < your_score:
                #     pc_new_poker = get_one_poker()
                #     pc_hand_poker.append(pc_new_poker)
                #     # 重新计算电脑手中的牌的分数
                #     pc_score = score_count(pc_hand_poker)
                # 电脑要牌规则二：当电脑的手中牌的分数落在区间[1:18]时，就一直要牌
                while pc_score in range(1, 19):
                    pc_new_poker = get_one_poker()
                    pc_hand_poker.append(pc_new_poker)
                    # 重新计算电脑的分数
                    pc_score = score_count(pc_hand_poker)
                print(f"电脑手里的牌为{pc_hand_poker}")
                return who_win(your_score, pc_score)
            else:
                continue


"""
游戏调用主程序
"""
while True:
    print("游戏即将开始，祝你好运！！！")
    input("按下【enter】开始游戏>>>")
    print(f"现在是第{game_round}轮游戏")

    # 洗牌
    random_cards(poker_list)

    # 游戏开始
    score = every_round(poker_list)

    # 计算总分
    total_score = np.add(total_score, score)

    print(f'此轮游戏结束，目前比分：{total_score[0]}:{total_score[1]}')
    game_round += 1
    continue_or_quit()

running result