如下所示:
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data = {
"北京" :{
"昌平" :{ "沙河" :[ "oldboy" , "test" ], "天通苑" :[ "链接地产" , "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_s = input ( "请输入以上任一省或直辖市名称>>>:" )
if choice_s in data:
while not exit_flag:
for i in data[choice_s]:
print ( "\t" ,i)
choice_q = input ( "请输入以上任一市区名称>>>:" )
if choice_q in data[choice_s]:
while not exit_flag:
for i in data[choice_s][choice_q]:
print ( "\t\t" ,i)
choice_j = input ( "请输入以上任一街道名称>>>:" )
if choice_j in data[choice_s][choice_q]:
for i in data[choice_s][choice_q][choice_j]:
print ( "\t\t" ,i)
last = input ( "最后一层,按b返回>>>:" )
if last = = "b" :
pass
elif last = = "q" :
exit_flag = True
if choice_j = = "b" :
break
elif choice_j = = "q" :
exit_flag = True
if choice_q = = "b" :
break
elif choice_q = = "q" :
exit_flag = True
|
要点:
1、字典的层级关系
2、break是终止本次循环,pass是什么也不做,一个占位符而已
3、巧妙使用exit_flag = False
以上这篇Python字典实现简单的三级菜单(实例讲解)就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持服务器之家。