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