python省市区三级联动
目前个人主要从事java开发，也想学习一下python,个人学习python初级阶段，上网找些练习题自己学习一下，在网上看了一道题目有关省市区多级菜单的题目，也附加的有代码，注释也很详细，不过个人觉得把所有的代码放在一块感觉不太好，自己别重写了一下，题目可参考http://www.cnblogs.com/gengcx/p/6940190.html
一下贴出个人代码供大家参考
#!/usr/bin/env python3
# encoding:utf-8
'''
@author: lierl
@file: province_city.py
@time: 2018/3/30 9:43
'''
__author__ = 'lierl'
dict_db = {
"河南": [
{
"郑州": [
"中原区",
"金水区",
"二七区",
"上街区",
"巩义市",
"新郑市",
"新密市",
"登封市",
"荥阳市",
"中牟县"
]
},
{
"开封": [
"鼓楼区",
"龙亭区",
"禹王台区",
"金明区",
"开封县",
"尉氏县",
"兰考县",
"杞县",
"通许县"
]
},
{
"南阳": [
"卧龙区",
"宛城区",
"邓州市",
"桐柏县",
"方城县",
"淅川县",
"镇平县",
"唐河县",
"南召县",
"内乡县"
]
},
{
"洛阳": [
"西工区",
"老城区",
"涧西区",
"瀍河回族区",
"洛龙区",
"吉利区",
"偃师市",
"孟津县",
"汝阳县"
]
}
],
"湖南": [
{
"长沙": [
"岳麓区",
"芙蓉区",
"天心区",
"开福区",
"雨花区",
"浏阳市",
"长沙县"
]
},
{
"岳阳": [
"岳阳楼区",
"云溪区",
"君山区",
"临湘市",
"汨罗市",
"岳阳县"
]
},
{
"株洲": [
"天元区",
"荷塘区",
"芦淞区",
"石峰区",
"醴陵市",
"株洲县",
"炎陵县"
]
},
{
"湘潭": [
"岳塘区",
"雨湖区",
"湘乡市",
"韶山市",
"湘潭县"
]
}
],
"广东": [
{
"广州": [
"越秀区",
"荔湾区",
"海珠区",
"天河区",
"白云区",
"黄埔区",
"番禺区",
"花都区"
]
},
{
"深圳": [
"福田区",
"罗湖区",
"南山区",
"宝安区",
"龙岗区",
"盐田区"
]
},
{
"珠海": [
"香洲区",
"斗门区",
"金湾区"
]
}
]
}#!/usr/bin/env python3
# encoding:utf-8
'''
@author: lierl
@file: do_three_level.py
@time: 2018/3/30 9:33
'''
import os
__author__ = 'lierl'
'''
（1）三级菜单
（2）可以次选择进入各子菜单
（3）所需新知识点：列表、字典
要求：输入back返回上一层，输入quit退出整个程序
思路：
（1）首先定义好三级菜单字典；
（2）提取第一级省的编号，打印包含哪些省份，让用户输入省份的编号，能够显示对应的省，这个过程需要创建一个字典，用于存放省原有的名称和编号，以便用户输入之后进去匹配；
（3）进入第二级菜单，市的提取，市也存放在一个字典中，以便用户输入对应的编号的时候能够到字典中查找，并返回对应的市；
（4）根据上面输入，得到县/区的列表，遍历列表，并使用enumerate()给县/区添加编号，对应的索引只需减一即可，因为不可能让用户看到从0开始，而列表默认是从0开始的；
'''
from demo.exercise.province_city import dict_db
# 显示省
def show_province():
while True:
print("欢迎来到全国省市区查询系统...")
print("+---------------------------------------------------------------+")
#获取到所有的省
province_dict = {}
province_nos = []
for index, province in enumerate(dict_db.keys(), start=1):
print('省的编号:%s 省的名称：%s' % (index, province))
province_dict[index] = province
province_nos.append(index)
print("+---------------------------------------------------------------+")
province_no = input('请输入你要查询的省的编号(输入quit退出)：')
province_no = province_no.strip()
if province_no == 'quit':
exit()
elif province_no.isdigit():
province_num = int(province_no)
if province_num not in province_nos:
print("您输入的数字不存在,请重新输入")
show_province()
province_name = province_dict[province_num]
print(province_name)
show_city(province_name)
else:
print("您输入的不是数字,请输入的对应的数字")
show_province()
# 显示市
def show_city(province_name):
while True:
print('+---------------------------------------------------------------+')
city_dict = {}
cities = {}
cities_nos = []
for index, city_all in enumerate(dict_db[province_name], start=1):
cities_nos.append(index)
cities[index] = city_all
for city in city_all.keys():
print('市的编号：%s 市的名称：%s' % (index, city))
city_dict[index] = city
print('+---------------------------------------------------------------+')
city_no = input("请输入你要查询的市的编号(输入quit退出,输入back返回上一层)：")
city_no = city_no.strip()
if city_no == 'quit':
exit()
elif city_no == 'back':
break
elif city_no.isdigit():
city_num = int(city_no)
if city_num not in cities_nos:
print("您输入的数字不存在,请重新输入")
show_city(province_name)
city_name = city_dict[city_num]
print('%s %s' % (province_name, city_name))
show_county(province_name, city_name, cities, city_num)
else:
print("您输入的不是数字,请输入的对应的数字")
show_city(province_name)
# 显示县
def show_county(province_name, city_name, cities, city_num):
while True:
print('+---------------------------------------------------------------+')
country_dict = {}
country_nos = []
for country_all in cities[city_num].values():
for index, country in enumerate(country_all, start=1):
country_dict[index] = country
country_nos.append(index)
print('县/区编号：%s 县/区名称：%s' % (index, country))
print('+---------------------------------------------------------------+')
country_no = input('请输入你要查询的县/区的编号(输入quit退出,输入back返回上一层)：')
country_no = country_no.strip()
if country_no == 'quit':
exit()
show_county(province_name, city_name, cities, city_num)
elif country_no == 'back':
break
elif country_no.isdigit():
country_num = int(country_no)
if country_num not in country_nos:
print("您输入的数字不存在,请重新输入")
show_county(province_name, city_name, cities, city_num)
print('%s %s %s' % (province_name, city_name, country_dict[country_num]))
exit()
else:
print("您输入的不是数字,请输入的对应的数字")
show_county(province_name, city_name, cities, city_num)
if __name__ == '__main__':
show_province()
把省市区封装成了三个方法，个人觉得比较清晰。。不足之处，请指正