三级菜单实例

代码：

#!/usr/bin/env python
# -*-coding:utf-8 -*-
# Author MFF
data = {
    '北京':{
        "昌平":{
            "沙河":["oldboy","test"],
            "天通苑":["链家地产","我爱我家"]
        },
        "朝阳":{
            "望京":["奔驰","陌陌"],
            "国贸":{"CICC","HP"},
            "东直门":{"Advent","飞信"},
        },
        "海淀":{},
    },
    '山东':{
        "德州":{},
        "青岛":{},
        "济南":{}
    },
    '广东':{
        "东莞":{},
        "常熟":{},
        "佛山":{},
    },
}
exit_flag=False
while not exit_flag:
    for i in data:
        print(i)
    choice=input("your choice is :")
    if choice in data:
        while not exit_flag:
            for i2 in data[choice]:
                print("\t",i2)
            choice2=input("your choice is :")
            if choice2 in data[choice]:
                while not exit_flag:
                    for i3 in data[choice][choice2]:
                        print("\t\t",i3)
                    choice3=input("your choice is :")
                    if choice3 in data[choice][choice2]:
                        for i4 in data[choice][choice2][choice3]:
                            print("\t\t",i4)
                        choice4=input("最后一层，请按b返回")
                        if choice4=="b":
                            pass
                        elif choice4 == "q":
                            exit_flag = True
                    if choice3=="b":
                        break
                    elif choice3 == "q":
                        exit_flag = True
            if choice2=="b":
                break
            elif choice2 == "q":
                exit_flag = True

标签：菜单,choice2,choice,flag,实例,exit,choice3,data,三级
来源： https://www.cnblogs.com/mff-5830/p/10660011.html