Remove “xmlns:py…” with lxml.objectify

问题

I just discovered lxml.objectify which seems nice and easy for reading/writing simple XML files.

Firstly, is it a good idea to use lxml.objectify? For instance is it mature and still developed and likely to be available in the future?

Secondly, how do I prevent objectify from addding markup like xmlns:py="http://codespeak.net/lxml/objectify/pytype" py:pytype="str" in the output below ?.

---

Input : config.xml

<?xml version="1.0" encoding="utf-8"?>
<Test>
  <MyElement1>sdfsdfdsfd</MyElement1>
</Test>

---

Code

from lxml import etree, objectify

with open('config.xml') as f:
    xml = f.read()
root = objectify.fromstring(xml)

root.Information = 'maybe'

print etree.tostring(root, pretty_print=True)

---

Output

<Test>
  <MyElement1>sdfsdfdsfd</MyElement1>
  <Information xmlns:py="http://codespeak.net/lxml/objectify/pytype" py:pytype="str">maybe</Information>
</Test>

回答1:

As pointed out here : When using lxml, can the XML be rendered without namespace attributes?, this is enough to prevent this xmlns markup to appear :

objectify.deannotate(root, xsi_nil=True)
etree.cleanup_namespaces(root)

来源：https://stackoverflow.com/questions/21767300/remove-xmlnspy-with-lxml-objectify