第一天作业二 三级菜单的实现

这个作业花了一定的时间，主要是卡在循环时显示不同的问题。



#!/usr/bin/env python
# -*-conding:utf-8-**
# __Author__:'liudong'
stats={
    "1.北京":{
        "1.海淀区":["中关村","西三旗","学院路"],
        "2.东城区":["安定门","朝阳门","建国门"],
        "3.丰台区":["右安门","东高地","卢沟桥"]
     },
    "2.天津":{
        "1.和平区":["南市","滨江道","南京路"],
        "2.河西区":["小海地","西南楼","友谊路"],
        "3.河东区":["中山门","万新村","津滨大道"]
    },
    "3.广东省":{
        "1.广州市":["白云区","天河区","越秀区"],
        "2.佛山市":["南海区","三水区","高明区"],
        "3.深圳市":["福田区","罗湖区","南山区"]
    },
    "4.浙江省":{
        "1.宁波市":["海曙区","江东区","江北区"],
        "2.杭州市":["上城区","下城区","江干区"],
        "3.温州市":["鹿城区","龙湾区","洞头区"]
    }

}

def Display_stats(): #显示省市主界面
    print ("-------------------------------------------------")
    print ("重点省市查询:")
    print ("-------------------------------------------------")
    for i in stats.keys():   #遍历行政省级地区键值
        print(i)
    print("---------------------------------------------------")
    print('Q[q] for exit')
def display_Beijing():  #显示北京的信息
    print('beijing provinces list')
    print('---------------------------------------------------')
    for i in stats['1.北京'].keys():
        print(i)
    print('---------------------------------------------------')
    print('B[b]:BACK,Q[q]:EXIT')
def display_Tianjin():
    print('Tianjin provinces list')
    print('---------------------------------------------------')
    for i in stats['2.天津'].keys():
        print(i)
    print('---------------------------------------------------')
    print('B[b]:BACK,Q[q]:EXIT')
def display_Guangdong():
    print('GuangDong provinces list')
    print('---------------------------------------------------')
    for i in stats['3.广东省'].keys():
        print(i)
    print('---------------------------------------------------')
    print('B[b]:BACK,Q[q]:EXIT')
def display_Zhejiang():
    print('Zhejiang provinces list')
    print('---------------------------------------------------')
    for i in stats['4.浙江省'].keys():
        print(i)
    print('---------------------------------------------------')
    print('B[b]:BACK,Q[q]:EXIT')
if __name__ == '__main__':
    Display_stats()
    while True:
        stats_choice=input('Please press number 1-4 for stats information:')
        if stats_choice == 'B' or stats_choice == 'b':
            Display_stats()
        if stats_choice == 'Q' or stats_choice=='q':
            exit()
        else:
            if stats_choice == "1":
                display_Beijing()
                province_choice=input('Press number for province information:')
                if province_choice =='q' or province_choice == 'Q':
                    exit()
                if province_choice == 'b' or province_choice == 'B':
                    display_Beijing()
                if province_choice == '1':
                    print('---------------------------------------------------')
                    for i in stats['1.北京']["1.海淀区"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Beijing()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()
                if province_choice == '2':
                    print('---------------------------------------------------')
                    for i in stats['1.北京']["2.东城区"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Beijing()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()
                if province_choice == '3':
                    print('---------------------------------------------------')
                    for i in stats['1.北京']["3.丰台区"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Beijing()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()

            if stats_choice == "2":
                display_Tianjin()
                province_choice=input('Press number for provice information:')
                if province_choice =='q' or province_choice == 'Q':
                    exit()
                if province_choice == 'b' or province_choice == 'B':
                    Display_stats()
                if province_choice == '1':
                    print('---------------------------------------------------')
                    for i in stats['2.天津']["1.和平区"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Tianjin()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()
                if province_choice == '2':
                    print('---------------------------------------------------')
                    for i in stats['2.天津']["2.河西区"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Tianjin()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()
                if province_choice == '3':
                    print('---------------------------------------------------')
                    for i in stats['2.天津']["3.河东区"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Tianjin()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()

            if stats_choice == "3":
                display_Guangdong()
                province_choice=input('Press number for provice information:')
                if province_choice =='q' or province_choice == 'Q':
                    exit()
                if province_choice == 'b' or province_choice == 'B':
                    Display_stats()
                if province_choice == '1':
                    print('---------------------------------------------------')
                    for i in stats['3.广东省']["1.广州市"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Guangdong()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()
                if province_choice == '2':
                    print('---------------------------------------------------')
                    for i in stats['3.广东省']["2.佛山市"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Guangdong()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()
                if province_choice == '3':
                    print('---------------------------------------------------')
                    for i in stats['3.广东省']["3.深圳市"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Guangdong()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()

            if stats_choice == "4":
                display_Zhejiang()
                province_choice=input('Press number for provice information:')
                if province_choice =='q' or province_choice == 'Q':
                    exit()
                if province_choice == 'b' or province_choice == 'B':
                    Display_stats()
                if province_choice == '1':
                    print('---------------------------------------------------')
                    for i in stats['4.浙江省']["1.宁波市"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Zhejiang()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()
                if province_choice == '2':
                    print('---------------------------------------------------')
                    for i in stats['4.浙江省']["2.杭州市"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Zhejiang()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()
                if province_choice == '3':
                    print('---------------------------------------------------')
                    for i in stats['4.浙江省']["3.温州市"]:
                        print(i)
                    print('---------------------------------------------------')
                    quit_back_choice=input('B[b]:BACK,Q[q]:EXIT]')
                    if quit_back_choice == 'B' or quit_back_choice == 'b':
                        display_Zhejiang()
                    if quit_back_choice == 'q' or quit_back_choice == 'Q':
                        exit()