使用lxml从python中的xml中删除名称空间和前缀 [英] Remove namespace and prefix from xml in python using lxml

问题描述

我需要打开一个xml文件并进行一些更改，其中之一是删除名称空间和前缀，然后保存到另一个文件中. 这是xml:

I have an xml file I need to open and make some changes to, one of those changes is to remove the namespace and prefix and then save to another file. Here is the xml:

<?xml version='1.0' encoding='UTF-8'?>
<package xmlns="http://apple.com/itunes/importer">
  <provider>some data</provider>
  <language>en-GB</language>
</package>

我可以进行所需的其他更改，但是找不到如何删除名称空间和前缀的方法.这是我需要的reusklt xml:

I can make the other changes I need, but can't find out how to remove the namespace and prefix. This is the reusklt xml I need:

<?xml version='1.0' encoding='UTF-8'?>
<package>
  <provider>some data</provider>
  <language>en-GB</language>
</package>

这是我的脚本，它将打开并解析xml并将其保存:

And here is my script which will open and parse the xml and save it:

metadata = '/Users/user1/Desktop/Python/metadata.xml'
from lxml import etree
parser = etree.XMLParser(remove_blank_text=True)
open(metadata)
tree = etree.parse(metadata, parser)
root = tree.getroot()
tree.write('/Users/user1/Desktop/Python/done.xml', pretty_print = True, xml_declaration = True, encoding = 'UTF-8')

那么我该如何在脚本中添加代码，以删除名称空间和前缀?

So how would I add code in my script which will remove the namespace and prefix?

推荐答案

按照Uku Loskit的建议替换标签.除此之外，请使用 lxml.objectify.deannotate .

Replace tag as Uku Loskit suggests. In addition to that, use lxml.objectify.deannotate.

from lxml import etree, objectify

metadata = '/Users/user1/Desktop/Python/metadata.xml'
parser = etree.XMLParser(remove_blank_text=True)
tree = etree.parse(metadata, parser)
root = tree.getroot()

####    
for elem in root.getiterator():
    if not hasattr(elem.tag, 'find'): continue  # (1)
    i = elem.tag.find('}')
    if i >= 0:
        elem.tag = elem.tag[i+1:]
objectify.deannotate(root, cleanup_namespaces=True)
####

tree.write('/Users/user1/Desktop/Python/done.xml',
           pretty_print=True, xml_declaration=True, encoding='UTF-8')

更新

某些标签，例如Comment，在访问tag属性时会返回一个函数.为此增加了一个警卫. (1)

Some tags like Comment return a function when accessing tag attribute. added a guard for that. (1)

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