获取 lxml 中标签内的所有文本 [英] Get all text inside a tag in lxml

问题描述

我想编写一个代码片段，它可以在 lxml 中获取 <content> 标签内的所有文本，在下面的所有三个实例中，包括代码标签.我试过 tostring(getchildren()) 但这会错过标签之间的文本.我在 API 中搜索相关函数的运气并不好.你能帮我吗?

<内容><div>标签内的文本</div></内容>#should return "<div>Text inside tag</div><!--2--><内容>没有标签的文本</内容>#应该返回没有标签的文本"<!--3--><内容>标签外的文字<div>标签内的文字</div></内容>#应该返回标签外的文本<div>标签内的文本</div>"

解决方案

尝试:

def stringify_children(node):从 lxml.etree 导入到字符串从 itertools 导入链部分 = ([节点.文本] +list(chain(*([c.text, tostring(c), c.tail] for c in node.getchildren()))) +[节点.尾])# 过滤器去除文本和尾部可能的无返回''.join(过滤器(无，部分))

示例:

from lxml import etreenode = etree.fromstring("""<内容>标签外的文本<div>文本<em>内</em>标签

</content>""")stringify_children(节点)

产生:' Text external tag

Text inside</em>;标签

'

I'd like to write a code snippet that would grab all of the text inside the <content> tag, in lxml, in all three instances below, including the code tags. I've tried tostring(getchildren()) but that would miss the text in between the tags. I didn't have very much luck searching the API for a relevant function. Could you help me out?

<!--1-->
<content>
<div>Text inside tag</div>
</content>
#should return "<div>Text inside tag</div>

<!--2-->
<content>
Text with no tag
</content>
#should return "Text with no tag"


<!--3-->
<content>
Text outside tag <div>Text inside tag</div>
</content>
#should return "Text outside tag <div>Text inside tag</div>"

解决方案

Try:

def stringify_children(node):
    from lxml.etree import tostring
    from itertools import chain
    parts = ([node.text] +
            list(chain(*([c.text, tostring(c), c.tail] for c in node.getchildren()))) +
            [node.tail])
    # filter removes possible Nones in texts and tails
    return ''.join(filter(None, parts))

Example:

from lxml import etree
node = etree.fromstring("""<content>
Text outside tag <div>Text <em>inside</em> tag</div>
</content>""")
stringify_children(node)

Produces: ' Text outside tag <div>Text <em>inside</em> tag</div> '

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