如何在标记中筛选出不需要的标记
如何在标记中筛选出不需要的标记
提问于 2016-02-02 00:30:40
我试图从这个页面中提取一个项目符号列表：http://bodetree.com/what-is-causing-your-headaches-startup-pain-points/
具体来说，在下面的截图中，用黄色突出显示的子弹。
首先，我使用漂亮的汤过滤掉所有没有属性的<ul>标记：
text = BeautifulSoup(requests.get('http://bodetree.com/what-is-causing-your-headaches-startup-pain-points/', timeout=7.00).text)
bullets = text.find_all(lambda tag: tag.name == 'ul' and not tag.attrs) 以下是返回的两个<ul>标记：
<ul>
<li>You are experiencing a decrease in sales and customers</li>
<li>If your brand design does not reflect what you deliver</li>
<li>If you want to attract a new target audience</li>
<li>Management change</li>
<li><a href="http://www.risingabovethenoise.com/how-to-rebrand-19-questions-ask-before-you-start/" onclick="__gaTracker('send', 'event', 'outbound-article', 'http://www.risingabovethenoise.com/how-to-rebrand-19-questions-ask-before-you-start/', '19 Questions to Ask Yourself Before You Start Rebranding');">19 Questions to Ask Yourself Before You Start Rebranding</a></li>
</ul>
<ul><li class="share-item share-fb" data-title="What is Causing your Headaches?- Startup Pain Points" data-type="facebook" data-url="http://bodetree.com/what-is-causing-your-headaches-startup-pain-points/" title="Facebook"></li><li class="share-item share-tw" data-title="What is Causing your Headaches?- Startup Pain Points" data-type="twitter" data-url="http://bodetree.com/what-is-causing-your-headaches-startup-pain-points/" title="Twitter"></li><li class="share-item share-gp" data-lang="en-US" data-title="What is Causing your Headaches?- Startup Pain Points" data-type="googlePlus" data-url="http://bodetree.com/what-is-causing-your-headaches-startup-pain-points/" title="Google+"></li><li class="share-item share-pn" data-media="http://bodetree.com/wp-content/uploads/2015/04/pain-points.png" data-title="What is Causing your Headaches?- Startup Pain Points" data-type="pinterest" data-url="http://bodetree.com/what-is-causing-your-headaches-startup-pain-points/" title="Pinterest"></li></ul>我只想提取页面正文中出现的<ul>标记，所以我想过滤掉包含垃圾的第二个<ul>标记。看起来，没有出现在页面正文中的<ul>标记有带有属性的<li>标记，因此我们可以在此基础上进行筛选。基本上，我想要的是表单<ul><li>string</li></ul>的标记结构。因此，在这种情况下，我希望返回的唯一<ul>是：
<ul>
<li>You are experiencing a decrease in sales and customers</li>
<li>If your brand design does not reflect what you deliver</li>
<li>If you want to attract a new target audience</li>
<li>Management change</li>
<li>19 Questions to Ask Yourself Before You Start Rebranding</li>
</ul> 有什么方法可以用find_all()来做到这一点吗？
回答 1
Stack Overflow用户
回答已采纳
发布于 2016-02-02 00:38:41
在本文中搜索ul，这是一个带有class="entry-content"的div
from bs4 import BeautifulSoup
soup = BeautifulSoup(requests.get('http://bodetree.com/what-is-causing-your-headaches-startup-pain-points/', timeout=7.00).text)
bullets = soup.select("div.entry-content ul li")
print([bullet.get_text() for bullet in bullets])指纹：
[
'You are experiencing a decrease in sales and customers',
'If your brand design does not reflect what you deliver',
'If you want to attract a new target audience',
'Management change',
'19 Questions to Ask Yourself Before You Start Rebranding'
]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/35143015
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