Python脚本从XML文件中删除所有注释 [英] Python script to remove all comments from XML file

问题描述

我正在尝试构建一个Python脚本，它将使用XML文档并从中删除所有注释块。

I am trying to build a python script that will take in an XML document and remove all of the comment blocks from it.

我尝试了一些：

tree = ElementTree()
tree.parse(file)
commentElements = tree.findall('//comment()')

for element in commentElements:
    element.parentNode.remove(element)

这样做会导致python出现一个奇怪的错误：KeyError：'（）'

Doing this yields a weird error from python: "KeyError: '()'

我知道有很多方法可以轻松使用其他方法（如sed）编辑文件，但是我必须在python脚本中执行。

I know there are ways to easily edit the file using other methods ( like sed ), but I have to do it in a python script.

推荐答案

comment（）是ElementTree不支持的XPath节点测试。

comment() is an XPath node test that is not supported by ElementTree.

您可以使用注释（）与 lxml 。此库与ElementTree非常相似，完全支持XPath 1.0。

You can use comment() with lxml. This library is quite similar to ElementTree and it has full support for XPath 1.0.

这是哟你可以使用lxml来删除注释：

Here is how you can remove comments with lxml:

from lxml import etree

XML = """<root>
  <!-- COMMENT 1 -->
  <x>TEXT 1</x>
  <y>TEXT 2 <!-- COMMENT 2 --></y>
</root>"""

tree = etree.fromstring(XML)

comments = tree.xpath('//comment()')

for c in comments:
    p = c.getparent()
    p.remove(c)

print etree.tostring(tree)

输出：

<root>
  <x>TEXT 1</x>
  <y>TEXT 2 </y>
</root>

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