day06:三级菜单练习0218

#1：省份数列：data = {    "北京":{        "昌平":{            "沙河":["oldboy","电信"],            "银河":[ "链家地产","我爱我家"]        },        "朝阳":{            "望京":["奔驰","陌陌"],            "东直门":["飞信","HP"]        },        "海淀":{            "test1":[‘address311‘,‘address312‘],            "test2":[‘address321‘,‘addrress322‘]        }    },    "广东":{        "东莞":{            "address201":["address311","address312"],            "address202":["address321","address322"]        },        "梅州":{            "maddress201":["maddress301","maddress302"],            "maddress202":["maddress311","maddress312"]        }    },    "广西":{        "百色":{            "Baddress201":["Baddress301","Baddress302"],            "Baddress202":["Baddress311","Baddress312"]        },        "南昌":{            "NBaddress201":["Naddress301","Naddress302"],            "N2Baddress212":["NBaddress311","Naddress312"]        }    }

}

exit_flag= Falsewhile not exit_flag:    for i in data:        print(i)    choice = input("请输入地址进入下一级菜单：")    if choice in data:        while not exit_flag:            for i2 in data[choice]:                print("\t",i2)            choice2 = input("请输入地址进入下一级菜单,按r键返回上一级菜单：")            if choice2 in data[choice]:                while not exit_flag:                    for i3 in data[choice][choice2]:                        print ("\t\t",i3)                    choice3 = input("请输入地址进入下一级菜单,按r键返回上一级菜单：")                    if choice3 in data[choice][choice2]:                        while not exit_flag:                            for i4 in data[choice][choice2][choice3]:                                print ("\t\t",i4)                            choice4 = input ("最后一层，按r返回上一级菜单:")                            if choice4 == "r":                                break                            elif choice4 == "q":                                exit_flag = True                    elif choice3 == "r":                        break                    elif choice3 == "q":                        exit_flag = True            if choice2 == "r":                break            elif choice2 == "q":                exit_flag = True    if choice == "r":         break    elif choice == "q":                exit_flag = True