【发布时间】：2016-06-08 08:57:40
【问题描述】：
我正在使用 Python3.4 和 Beautiful Soup 4 来获取 RSS XML 提要的一些数据。
一切似乎都运行良好，但有时它的行为不如预期，因为没有从列表中的至少一项中获取 <description> 标记内的所有数据。
例如，这是给我带来问题的项目：
<item>
<title>Google’s first DeepMind AI health project is missing something</title>
<link>http://thenextweb.com/google/2016/02/25/googles-first-deepmind-ai-health-project-is-missing-something/</link>
<comments>http://thenextweb.com/google/2016/02/25/googles-first-deepmind-ai-health-project-is-missing-something/#respond</comments>
<pubDate>Thu, 25 Feb 2016 11:36:56 +0000</pubDate>
<dc:creator><![CDATA[Kirsty Styles]]></dc:creator>
<category><![CDATA[Google]]></category>
<category><![CDATA[Insider]]></category>
<category><![CDATA[Deepmind]]></category>
<category><![CDATA[doctor]]></category>
<category><![CDATA[healthcare]]></category>
<category><![CDATA[NHS]]></category>
<category><![CDATA[UK]]></category>
<guid isPermaLink="false">http://thenextweb.com/?p=957096</guid>
<description><![CDATA[<img width="520" height="245" src="http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2014/04/doctor-crop-520x245.jpg" alt="Doctors Seek Higher Fees From Health Insurers" title="Google's first DeepMind AI health project is missing something" data-id="750745" /><br />Having been down at Google’s DeepMind office earlier this week its man vs AI machine gaming competition preview, I was tipped off that a potentially-more-serious healthcare announcement would follow soon. That it has, but contrary to what the company’s remit might suggest, this project doesn’t actually contain any artificial intelligence at launch. “To date, no machine learning has been involved in these projects,” the company said. “While there is obvious potential in applying machine learning to these kinds of complex challenges, any decision to do so will led by clinicians.” DeepMind has announced an acquisition in the shape of an Imperial College London… <br><br><a href="http://thenextweb.com/google/2016/02/25/googles-first-deepmind-ai-health-project-is-missing-something/?utm_source=social&utm_medium=feed&utm_campaign=profeed">This story continues</a> at The Next Web]]></description>
<wfw:commentRss>http://thenextweb.com/google/2016/02/25/googles-first-deepmind-ai-health-project-is-missing-something/feed/</wfw:commentRss>
<slash:comments>0</slash:comments>
<enclosure url="http://cdn1.tnwcdn.com/wp-content/blogs.dir/1/files/2014/04/doctor-crop-520x245.jpg" type="image/jpeg" length="0" />
</item>
我正在使用这段代码来解析数据：
from bs4 import BeautifulSoup
import urllib.request
req = urllib.request.urlopen('http://thenextweb.com/feed/')
xml = BeautifulSoup(req, 'xml')
for item in xml.findAll('item'):
string = item.description.string
#new_string = string.split('/>', 1)
#print(new_string[0]+'/><p>')
print(string)
当我运行脚本时一切正常，但是那个特定的项目失败了。
代码中的注释行用于拆分img并添加<p>标签以对内容进行排序。
我从那个项目得到的结果是：
’s DeepMind office earlier this week its man vs AI machine gaming competition preview, I was tipped off that a potentially-more-serious healthcare announcement would follow soon. That it has, but contrary to what the company’s remit might suggest, this project doesn’t actually contain any artificial intelligence at launch. “To date, no machine learning has been involved in these projects,” the company said. “While there is obvious potential in applying machine learning to these kinds of complex challenges, any decision to do so will led by clinicians.” DeepMind has announced an acquisition in the shape of an Imperial College London… <br><br><a href="http://thenextweb.com/google/2016/02/25/googles-first-deepmind-ai-health-project-is-missing-something/?utm_source=social&utm_medium=feed&utm_campaign=profeed">This story continues</a> at The Next Web
我不知道发生了什么。
如果有人可以帮助我或指导我提取确切的<img> 标签，我将非常感激。
【问题讨论】：
-
通过this 快速猜测：首先
import html。然后尝试string = html.unescape(item.description.string)。需要检查bs4API，但您可能还需要string = html.unescape(item.description.text)。
标签： python xml parsing python-3.x beautifulsoup