python3之利用字典和列表实现城市多级菜单

利用字典和列表实现城市多级菜单

 #coding:utf-8

 #利用字典和列表实现城市多级菜单

 addrIndex = {"":"北京","":"上海","":"南京","":"福建"}

 addrDict = {"北京":["东城区","西城区","大兴区"],"上海":["黄浦区","长宁区","宝山区"],"南京":["玄武区","秦淮区","六合区"],"福建":["龙岩","泉州"]}

 while True:

     i = 1

     #循环打印城市名称

     for cs in addrDict.keys():

         print("%d.%s" %(i,cs))

         i += 1

     choIndex = input("请输入你城市编号：")

     #为每个城市指定编号值，便于判断输入错误和扩展

     if choIndex not in addrIndex.keys():

         print("输入有误！")

         continue

     # print(addrDict[addrIndex[choIndex]])

     while True:

         i = 1

         #根据输入的城市编号，获取城市名称，城市名称直接为addrDict字典的key

         for pq in addrDict[addrIndex[choIndex]]:

             print("%d.%s" %(i,pq))

             i += 1

         pqCho = input("请输入片区编号,输入q返回上级：")

         #输入q跳出

         if pqCho == "q":

             break

         #输入正确的值打印，pqCho.isdigit()用于判断输入非q字符串错误

         elif pqCho.isdigit() and (int)(pqCho)-1>=0 and (int)(pqCho)-1<=len(addrDict[addrIndex[choIndex]])-1:

             print("你选择的是:%s" %(addrDict[addrIndex[choIndex]][(int)(pqCho)-1]))

         else:

             print("输入有误！")

             continue