本文介绍了如何在lxml中基于子项选择父项?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有此代码:
<table cellspacing="1" cellpadding="1" border="0">
<tbody>
<tr>
<td>Something else</td>
</tr>
<tr>
<td valign="top">
<a href="http://exact url">Something</a>
</td>
<td valign="top">Something else</td>
</tr>
</tbody>
</table>
我想找到表,但是很难定位它(使用相同的代码大约10次).但是我知道URL中有什么.我怎样才能得到父表?
I want to find the Table but is very hard to target it (the very same code is used like 10 times). But I know what is in the URL. How can I get then the parent table?
推荐答案
如果t
是此XML代码段的etree
,则您要查找的链接是
If t
is the etree
for this snippet of XML, then the link you're looking for is
t.xpath('//a[@href = "http://exact url"]')[0]
从那里,您可以使用ancestor
轴到达table
:
From there, you can get to the table
using the ancestor
axis:
t.xpath('//a[@href = "http://exact url"]/ancestor::table')[-1]
这篇关于如何在lxml中基于子项选择父项?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!