在网上找到一篇《python调用中国天气网的公用API获取天气信息 》它的源码是这样的：
4 | # ToDo: get weather info from weather.com.cn |
11 | # get weather html and parse to json |
13 | weatherJSON = json.JSONDecoder().decode(weatherHtml) |
14 | weatherInfo = weatherJSON['weatherinfo'] |
17 | print '城市：t', weatherInfo['city'] |
18 | print '时间：t', weatherInfo['date_y'] |
20 | print '温度：t', weatherInfo['temp1'] |
21 | print '天气：t', weatherInfo['weather1'] |
22 | print '风速：t', weatherInfo['wind1'] |
23 | print '紫外线：t', weatherInfo['index_uv'] |
24 | print '穿衣指数：t', weatherInfo['index_d'] |
26 | print '温度：t', weatherInfo['temp2'] |
27 | print '天气：t', weatherInfo['weather2'] |
28 | print '风速：t', weatherInfo['wind2'] |
29 | print '紫外线：t', weatherInfo['index48_uv'] |
30 | print '穿衣指数：t', weatherInfo['index48_d'] |
32 | print '温度：t', weatherInfo['temp3'] |
33 | print '天气：t', weatherInfo['weather3'] |
34 | print '风速：t', weatherInfo['wind3'] |
可是由于接口已经失效，所以无法运行，后来又找到了这篇文章《国家气象局免费天气预报接口API》，然后发现原来有三个接口地址：
http://www.weather.com.cn/data/sk/101010100.html
http://www.weather.com.cn/data/cityinfo/101010100.html
http://m.weather.com.cn/data/101010100.html
于是使用另外一个结口地址，稍微改了一下，终于取到了数。
3 | # ToDo: get weather info from weather.com.cn |
8 | # get weather html and parse to json |
10 | weatherJSON = json.JSONDecoder().decode(weatherHtml) |
11 | weatherInfo = weatherJSON['weatherinfo'] |
14 | print '城市：t', weatherInfo['city'] |
16 | print '温度：t', weatherInfo['temp'] |
17 | print '风向：t', weatherInfo['WD'] |
18 | print '风速：t', weatherInfo['WS'] |
19 | print '湿度：t', weatherInfo['SD'] |
20 | print '时间：t', weatherInfo['time'] |
21 | print '紫外线：t', weatherInfo['WSE'] |
22 | print '穿衣指数：t', weatherInfo['isRadar'] |
23 | print '温度：t', weatherInfo['njd'] |
24 | print '天气：t', weatherInfo['qy'] |
25 | print '风速：t', weatherInfo['rain'] |
运行结果：
备注：最后面几个参数我懒得对了，说明文字是不对的。
附：另外一个天气json数据
来源《真正的中国天气api接口xml，json》
作者：蜗牛博客
