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xpath - python怎么用lxml处理

例如:

<p>
没
<em><!--red_beg-->aa<!--red_end--></em>
</p>
<p>
没
<em><!--red_beg-->aa<!--red_end--></em>
没
<em><!--red_beg-->aa<!--red_end--></em>
</p>
<p>
没
</p>

就是在p标签里可能会出现同样的em标签,而且数量不定,那我怎么获取p的内容,包括em里的内容。
例如第二个p获取输出是‘没aa没aa’

或者获取到p节点之后,怎么把里面的内容转换为字符串

伊谢尔伦伊谢尔伦2808 days ago1203

reply all(3)I'll reply

  • PHPz

    PHPz2017-04-18 10:21:05

    I accidentally learned how to deal with this problem today, so I came up with this question to answer it. Questioner, you can look at the axis of xpath, for example, if you want to get the second <p>标签的“没aa没aa”,实际是取得它全部后代节点的文本内容,可以使用
    element_dom.xpath("//p[2]//descendant::text()")来取得,拿到的结果是一个这样['没', 'aa', '没', 'aa']的list,然后自己手动拼接成字符串就可以了,比如"".join(list). Similarly, if you need to perform other operations, you can also use similar methods.

    reply
    0
  • 大家讲道理

    大家讲道理2017-04-18 10:21:05

    Change to bs4, the similarities and differences between string and text are here.

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    0
  • PHP中文网

    PHP中文网2017-04-18 10:21:05

    The

    method of .text_content()lxml.html can get the text content of the current node and all child nodes.

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    0
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