玩法：通过加减乘除操作，小学生都没问题的。

import os
import sys
import pygame
from cfg import *
from modules import *
from fractions import Fraction
 
 
'''检查控件是否被点击'''
def checkClicked(group, mouse_pos, group_type='NUMBER'):
    selected = []
    # 数字卡片/运算符卡片
    if group_type == GROUPTYPES[0] or group_type == GROUPTYPES[1]:
        max_selected = 2 if group_type == GROUPTYPES[0] else 1
        num_selected = 0
        for each in group:
            num_selected += int(each.is_selected)
        for each in group:
            if each.rect.collidepoint(mouse_pos):
                if each.is_selected:
                    each.is_selected = not each.is_selected
                    num_selected -= 1
                    each.select_order = None
                else:
                    if num_selected < max_selected:
                        each.is_selected = not each.is_selected
                        num_selected += 1
                        each.select_order = str(num_selected)
            if each.is_selected:
                selected.append(each.attribute)
    # 按钮卡片
    elif group_type == GROUPTYPES[2]:
        for each in group:
            if each.rect.collidepoint(mouse_pos):
                each.is_selected = True
                selected.append(each.attribute)
    # 抛出异常
    else:
        raise ValueError('checkClicked.group_type unsupport %s, expect %s, %s or %s...' % (group_type, *GROUPTYPES))
    return selected
 
 
'''获取数字精灵组'''
def getNumberSpritesGroup(numbers):
    number_sprites_group = pygame.sprite.Group()
    for idx, number in enumerate(numbers):
        args = (*NUMBERCARD_POSITIONS[idx], str(number), NUMBERFONT, NUMBERFONT_COLORS, NUMBERCARD_COLORS, str(number))
        number_sprites_group.add(Card(*args))
    return number_sprites_group
 
 
'''获取运算符精灵组'''
def getOperatorSpritesGroup(operators):
    operator_sprites_group = pygame.sprite.Group()
    for idx, operator in enumerate(operators):
        args = (*OPERATORCARD_POSITIONS[idx], str(operator), OPERATORFONT, OPREATORFONT_COLORS, OPERATORCARD_COLORS, str(operator))
        operator_sprites_group.add(Card(*args))
    return operator_sprites_group
 
 
'''获取按钮精灵组'''
def getButtonSpritesGroup(buttons):
    button_sprites_group = pygame.sprite.Group()
    for idx, button in enumerate(buttons):
        args = (*BUTTONCARD_POSITIONS[idx], str(button), BUTTONFONT, BUTTONFONT_COLORS, BUTTONCARD_COLORS, str(button))
        button_sprites_group.add(Button(*args))
    return button_sprites_group
 
 
'''计算'''
def calculate(number1, number2, operator):
    operator_map = {'+': '+', '-': '-', '×': '*', '÷': '/'}
    try:
        result = str(eval(number1+operator_map[operator]+number2))
        return result if '.' not in result else str(Fraction(number1+operator_map[operator]+number2))
    except:
        return None
 
 
'''在屏幕上显示信息'''
def showInfo(text, screen):
    rect = pygame.Rect(200, 180, 400, 200)
    pygame.draw.rect(screen, PAPAYAWHIP, rect)
    font = pygame.font.Font(FONTPATH, 40)
    text_render = font.render(text, True, BLACK)
    font_size = font.size(text)
    screen.blit(text_render, (rect.x+(rect.width-font_size[0])/2, rect.y+(rect.height-font_size[1])/2))
 
 
'''主函数'''
def main():
    # 初始化, 导入必要的游戏素材
    pygame.init()
    pygame.mixer.init()
    screen = pygame.display.set_mode(SCREENSIZE)
    pygame.display.set_caption('24 point —— 九歌')
    win_sound = pygame.mixer.Sound(AUDIOWINPATH)
    lose_sound = pygame.mixer.Sound(AUDIOLOSEPATH)
    warn_sound = pygame.mixer.Sound(AUDIOWARNPATH)
    pygame.mixer.music.load(BGMPATH)
    pygame.mixer.music.play(-1, 0.0)
    # 24点游戏生成器
    game24_gen = game24Generator()
    game24_gen.generate()
    # 精灵组
    # --数字
    number_sprites_group = getNumberSpritesGroup(game24_gen.numbers_now)
    # --运算符
    operator_sprites_group = getOperatorSpritesGroup(OPREATORS)
    # --按钮
    button_sprites_group = getButtonSpritesGroup(BUTTONS)
    # 游戏主循环
    clock = pygame.time.Clock()
    selected_numbers = []
    selected_operators = []
    selected_buttons = []
    is_win = False
    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit(-1)
            elif event.type == pygame.MOUSEBUTTONUP:
                mouse_pos = pygame.mouse.get_pos()
                selected_numbers = checkClicked(number_sprites_group, mouse_pos, 'NUMBER')
                selected_operators = checkClicked(operator_sprites_group, mouse_pos, 'OPREATOR')
                selected_buttons = checkClicked(button_sprites_group, mouse_pos, 'BUTTON')
        screen.fill(AZURE)
        # 更新数字
        if len(selected_numbers) == 2 and len(selected_operators) == 1:
            noselected_numbers = []
            for each in number_sprites_group:
                if each.is_selected:
                    if each.select_order == '1':
                        selected_number1 = each.attribute
                    elif each.select_order == '2':
                        selected_number2 = each.attribute
                    else:
                        raise ValueError('Unknow select_order %s, expect 1 or 2...' % each.select_order)
                else:
                    noselected_numbers.append(each.attribute)
                each.is_selected = False
            for each in operator_sprites_group:
                each.is_selected = False
            result = calculate(selected_number1, selected_number2, *selected_operators)
            if result is not None:
                game24_gen.numbers_now = noselected_numbers + [result]
                is_win = game24_gen.check()
                if is_win:
                    win_sound.play()
                if not is_win and len(game24_gen.numbers_now) == 1:
                    lose_sound.play()
            else:
                warn_sound.play()
            selected_numbers = []
            selected_operators = []
            number_sprites_group = getNumberSpritesGroup(game24_gen.numbers_now)
        # 精灵都画到screen上
        for each in number_sprites_group:
            each.draw(screen, pygame.mouse.get_pos())
        for each in operator_sprites_group:
            each.draw(screen, pygame.mouse.get_pos())
        for each in button_sprites_group:
            if selected_buttons and selected_buttons[0] in ['RESET', 'NEXT']:
                is_win = False
            if selected_buttons and each.attribute == selected_buttons[0]:
                each.is_selected = False
                number_sprites_group = each.do(game24_gen, getNumberSpritesGroup, number_sprites_group, button_sprites_group)
                selected_buttons = []
            each.draw(screen, pygame.mouse.get_pos())
        # 游戏胜利
        if is_win:
            showInfo('Congratulations', screen)
        # 游戏失败
        if not is_win and len(game24_gen.numbers_now) == 1:
            showInfo('Game Over', screen)
        pygame.display.flip()
        clock.tick(30)
 
 
'''run'''
if __name__ == '__main__':
    main()