需求 省县市三级联动 用户输入河北，则打印河北省下的市，用户输入市，则显示该河北省的这个市下的县
测试信息
dic = {
"河北":{
"石家庄":["鹿泉","藁城","元氏"],
"邯郸":["永年","涉县","磁县"]
},
"河南":{
"周口":["太康","商水","淮阳"],
"郑州":["金水","二七","管城"]
},
"山西":{
"太原":["迎泽","清徐","阳曲"],
"大同":["阳高","天镇","灵丘"]
}
}
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dic
=
{
"河北"
:{
"石家庄"
:[
"鹿泉"
,
"藁城"
,
"元氏"
],
"邯郸"
:[
"永年"
,
"涉县"
,
"磁县"
]
},
"河南"
:{
"周口"
:[
"太康"
,
"商水"
,
"淮阳"
],
"郑州"
:[
"金水"
,
"二七"
,
"管城"
]
},
"山西"
:{
"太原"
:[
"迎泽"
,
"清徐"
,
"阳曲"
],
"大同"
:[
"阳高"
,
"天镇"
,
"灵丘"
]
}
}
while
True
:
print
(
'请在以下省份中选择：'
)
for
i
in
dic.keys():
print
(i)
pro
=
input
(
'输入你要查询的省份(退出请按q)：'
).strip().lower()
if
pro
=
=
'q'
:
print
(
'再见！'
)
exit()
if
pro
not
in
dic.keys():
print
(
'要查询的省份不存在或者你的输入有误，请重新输入'
)
continue
else
:
tag
=
True
while
tag:
print
(
'%s有以下城市：'
%
pro)
for
c
in
dic[pro].keys():
print
(c)
city
=
input
(
'请输入你要查询的城市（回到省份查找请按p，退出请按q）：'
).strip().lower()
if
city
=
=
'q'
:
print
(
'再见!'
)
exit()
if
city
=
=
'p'
:
break
if
city
not
in
dic[pro].keys():
print
(
'要查询的城市不存在或者你的输入有误，请重新输入'
)
continue
else
:
while
tag:
print
(
'%s有以下县区'
%
city)
for
cou
in
dic[pro][city]:
print
(cou)
county
=
input
(
'重新选择省份请按p，重新选择城市请按c，退出请按q：'
).strip().lower()
if
county
=
=
'q'
:
print
(
'再见！'
)
exit()
if
county
=
=
'c'
:
break
if
county
=
=
'p'
:
tag
=
False
break
else
:
print
(
'输入错误，请重新输入'
)
continue
本文转自lyndon博客51CTO博客，原文链接http://blog.51cto.com/lyndon/1947436如需转载请自行联系原作者 迟到的栋子
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