读书笔记--python数据可视化--004_读取JSON数据

#-*- coding: UTF-8 -*-
'''
#################################################
# Author : 余欢
# Date : Dec 26, 2015    9:00:14 PM
#company : 南京师范大学--大数据实验室
# description : 读取JSON数据
#################################################
'''

import requests
import json

'''
1  指定GitHub URL(GitHub网站的最近活动时间表)来读取JSON格式数据
2  使用requests模块访问指定的URL，并获取内容
3  读取内容并将之转化为JSON格式的对象
4  迭代访问JSON对象，对于其中的每一项，读取每个代码库的URL值
'''
#树中的URL失效了
url = "http://api.map.baidu.com/telematics/v3/weather?location=%E6%88%90%E9%83%BD&output=json&ak=rnm8udmHdWaHFWZTO2tuTiG8"

r = requests.get(url)  #获取内容

s = json.loads(r._content)  #内容转化为json对象
# print s
print "============================"
print s["results"][0]["index"][0]["des"]   #打印某项数据

{
"error":0,
"status":"success",
"date":"2015-12-27",
"results":
[
{
"currentCity":"成都",
"pm25":"291",
"index":
[
{
"title":"穿衣",
"zs":"较冷",
"tipt":"穿衣指数",
"des":"建议着厚外套加毛衣等服装。年老体弱者宜着大衣、呢外套加羊毛衫。"},

{
"title":"洗车",
"zs":"较适宜",
"tipt":"洗车指数",
"des":"较适宜洗车，未来一天无雨，风力较小，擦洗一新的汽车至少能保持一天。"},

{
"title":"旅游",
"zs":"适宜",
"tipt":"旅游指数",
"des":"天气较好，温度适宜，是个好天气哦。这样的天气适宜旅游，您可以尽情地享受大自然的风光。"},

{
"title":"感冒",
"zs":"极易发",
"tipt":"感冒指数",
"des":"昼夜温差极大，且空气湿度较大，寒冷潮湿，极易发生感冒，请特别注意增减衣服保暖防寒。"},

{
"title":"运动",
"zs":"较不宜",
"tipt":"运动指数",
"des":"天气较好，但考虑天气寒冷，推荐您进行室内运动，若在户外运动请注意保暖并做好准备活动。"},

{
"title":"紫外线强度",
"zs":"中等",
"tipt":"紫外线强度指数",
"des":"属中等强度紫外线辐射天气，外出时建议涂擦SPF高于15、PA+的防晒护肤品，戴帽子、太阳镜。"}

],

"weather_data":
[
{
"date":"周日 12月27日 (实时：3℃)",
"dayPictureUrl":"http://api.map.baidu.com/images/weather/day/qing.png",
"nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png",
"weather":"晴转多云",
"wind":"南风微风",
"temperature":"12 ~ 1℃"},

{
"date":"周一",
"dayPictureUrl":"http://api.map.baidu.com/images/weather/day/yin.png",
"nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png",
"weather":"阴转多云",
"wind":"南风微风",
"temperature":"11 ~ 4℃"},

{
"date":"周二",
"dayPictureUrl":"http://api.map.baidu.com/images/weather/day/duoyun.png",
"nightPictureUrl":"http://api.map.baidu.com/images/weather/night/xiaoyu.png",
"weather":"多云转小雨",
"wind":"南风微风",
"temperature":"12 ~ 5℃"},

{
"date":"周三",
"dayPictureUrl":"http://api.map.baidu.com/images/weather/day/duoyun.png",
"nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png",
"weather":"多云",
"wind":"微风",
"temperature":"12 ~ 3℃"}
]
}
]
}

============================
建议着厚外套加毛衣等服装。年老体弱者宜着大衣、呢外套加羊毛衫。