用lxml.html替换元素 [英] Replacing elements with lxml.html

问题描述

我对lxml和HTML解析器作为一个整体还很陌生. 我想知道是否有一种方法可以将树中的一个元素替换为另一个元素...

I'm fairly new to lxml and HTML Parsers as a whole. I was wondering if there is a way to replace an element within a tree with another element...

例如我有:

body = """<code> def function(arg): print arg </code> Blah blah blah <code> int main() { return 0; } </code> """

doc = lxml.html.fromstring(body)
codeblocks = doc.cssselect('code')

for block in codeblocks:
  lexer = guess_lexer(block.text_content())
  hilited = highlight(block.text_content(), lexer, HtmlFormatter())
  doc.replace(block, hilited)

我想按照这些原则做一些事情，但这会导致出现"TypeError"，因为被人为"不是lxml.etree._Element.

I want to do something along those lines, but this results in a "TypeError" because "hilited" isn't an lxml.etree._Element.

这可行吗?

此致

推荐答案

关于lxml，

在doc.replace(block, hilited)

block 是lxml的Element对象，被是字符串，您不能替换它.

block is the lxml's Element object, hilited is string, you cannot replace that.

有2种方法可以做到这一点

There is 2 ways to do that

block.text=hilited 

或

body=body.replace(block.text,hilited)

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