python三级菜单

Posted 2020-10-02

#_author_: edison
#date: 2017/8/10
china = {
    ‘广东‘:{
        ‘广州‘:{‘海珠‘:‘红烧螃蟹‘,‘越秀‘:‘蚝蛎煎蛋‘},
        ‘深圳‘:{‘南山‘:‘油焖大虾‘,‘罗湖‘:‘小炒肉‘},
        ‘珠海‘:{‘金湾‘:‘清蒸螃蟹‘,‘斗门‘:‘火爆腰花‘},
    },
    ‘四川‘:{
        ‘成都‘:{‘双流‘:‘双流老妈兔头‘,‘郫县‘:‘七婆串串‘},
        ‘绵阳‘:{‘三台‘:‘三台丰水梨‘,‘梓州‘:‘梓州板鸭‘},
        ‘南充‘:{‘西充‘:‘狮子糕‘,‘蓬安‘:‘姚麻花‘}
    },
    ‘云南‘:{
        ‘丽江‘:{‘永胜‘:‘板鸭‘,‘华坪‘:‘青椒肉丝‘},
        ‘昆明‘:{‘盘龙‘:‘干锅‘,‘五华‘:‘火锅‘},
        ‘玉溪‘:{‘红塔‘:‘红塔山‘,‘江川‘:‘云烟‘}
    }
}


back_flag = False       #返回标志位
quit_flag = False       #退出标志位
while not back_flag and not quit_flag:
    for key in china:
        print(key)
    choice = input(‘输入你喜欢的省会:‘).strip()      #strip() 方法用于移除字符串头尾指定的字符（默认为空格）
    if choice in china:
        while not back_flag and not quit_flag:       #让程序停在第二层
            for key2 in china[choice]:
                print(key2)
            choice2 = input(‘输入你喜欢的城市(b返回上一级,q退出):‘).strip()
            if choice2 == ‘b‘:
                back_flag = True
            if choice2 == ‘q‘:
                quit_flag = True
            if choice2 in china[choice]:
                while not back_flag and not quit_flag:
                    for key3 in china[choice][choice2]:
                        print(key3)
                    choice3 = input(‘输入你喜欢的区县(b返回上一级,q退出):‘).strip()
                    if choice3 == ‘b‘:
                        back_flag = True
                    if choice3 == ‘q‘:
                        quit_flag = True
                    if choice3 in china[choice][choice2]:
                        while not back_flag and not quit_flag:
                            for key4 in china[choice][choice2][choice3]:
                                print(key4)
                            choice4 = input(‘(b返回上一级,q退出):‘).strip()
                            if choice4 == ‘b‘:
                                back_flag = True
                            if choice4 == ‘q‘:
                                quit_flag = True
                        else:
                            back_flag = False
                else:
                    back_flag = False
        else:
            back_flag = False