如何从我掌握的html文档中提取特定内容
如何从我掌握的html文档中提取特定内容
提问于 2016-01-07 13:55:01
我是新来的美女汤和乌尔利布。
我想要做的是阅读来自pm25.in的数据，这是一个提供中国大气质量数据的网站。
我的早期尝试
### set a specific city name, token is the public key for free use
city = 'zhuhai'
html_doc = urllib.urlopen("http://www.pm25.in/api/querys/co.json?
city=zhuhai&token=5j1znBVAsnSf5xQyNQyq").read().decode('utf-8')
soup = BeautifulSoup(html_doc) 结果
<html>
<body>
<p>
[{"aqi":29,"area":"珠海","co":0.591,"co_24h":0.955,"position_name":"吉大","primary_pollutant":null,"quality":"优","station_code":"1367A","time_point":"2016-01-07T20:00:00Z"},{"aqi":51,"area":"珠海","co":0.913,"co_24h":1.059,"position_name":"前山","primary_pollutant":"颗粒物(PM10)","quality":"良","station_code":"1368A","time_point":"2016-01-07T20:00:00Z"},{"aqi":35,"area":"珠海","co":0.699,"co_24h":0.885,"position_name":"唐家","primary_pollutant":null,"quality":"优","station_code":"1369A","time_point":"2016-01-07T20:00:00Z"},{"aqi":52,"area":"珠海","co":0.874,"co_24h":0.949,"position_name":"斗门","primary_pollutant":"颗粒物(PM10)","quality":"良","station_code":"1370A","time_point":"2016-01-07T20:00:00Z"},{"aqi":67,"area":"珠海","co":0.769,"co_24h":0.962,"position_name":null,"primary_pollutant":"臭氧8小时","quality":"良","station_code":null,"time_point":"2016-01-07T20:00:00Z"}]
</p>
</body>
</html>
我的目标
下面是我作为模板手动编辑的dataframe。
http://i4.tietuku.com/71f10394dbedd8d3.png
我想知道如何从原始html_doc中提取这些有用的数据。
我已经尝试过soup.find_all()，但我不知道如何设置这些参数来实现这一目标。
回答 1
Stack Overflow用户
回答已采纳
发布于 2016-01-07 14:09:52
可以使用json模块将soup转换为列表：
import json
...
l = soup.p.get_text() # find p tag and extract text from it
result = json.loads(l) # convert text into python list现在您已经拥有了列表result，您可以以所需的方式操作数据。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/34656929
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