Create SVG / XML document without ns0 namespace using Python ElementTree [duplicate]

Question

I'm building an SVG document with ElementTree in Python 2.7. Here is the code:

from xml.etree import ElementTree as etree

root = etree.XML('<svg width="100%" height="100%" version="1.1" xmlns="http://www.w3.org/2000/svg"></svg>')
root.append(etree.Element("path"))
root[0].set("d", "M1 1 L2 2 Z")
print etree.tostring(root, encoding='iso-8859-1')

This generates the output:

<?xml version='1.0' encoding='iso-8859-1'?>
<ns0:svg xmlns:ns0="http://www.w3.org/2000/svg" height="100%" version="1.1" width="100%"><path d="M1 1 L2 2 Z" /></ns0:svg>

This does not parse as valid SVG. How can I remove the ns0 namespace?

jfenwick · Accepted Answer · 2010-10-09 06:37:36Z

57

I just figured it out and I can't delete the question so here it is:

etree.register_namespace("","http://www.w3.org/2000/svg")

I think this only works as of Python 2.7 though.

answered Oct 9, 2010 at 6:37

jfenwick

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7 Comments

codekaizen Over a year ago

Answering your own question is much better than deleting it. If someone later has this question, it will already be answered and indexed!

intuited Over a year ago

If you need compatibility with older Pythons (or even if you don't), you might be better off using lxml.etree: this is more or less a superset of what's provided by xml.etree. Has some external dependencies, though.

jfenwick Over a year ago

lxml is notorious for not working on OS X out of the box. They don't provide a precompiled egg for Intel macs and trying to compile it from scratch is extremely hard. The only way to get it working quickly is if you're using macports, which I don't feel is an acceptable dependency.

Conrad.Dean Over a year ago

As someone who googled python xml ns0 and got your answer, I'm pretty grateful this wasn't deleted ;)

sbru Over a year ago

@jfenwick, where in your code (after which line) do you put the register-namespace method?

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Community · Accepted Answer · 2017-05-23 12:07:42Z

0

Here's how I do it with lxml.

from lxml import etree
svg_tree = etree.fromstring(svg_str, parser=etree.XMLParser())
etree.tostring(svg_tree)

Used sample code from here: lxml-removing-xml-tags-when-parsing

edited May 23, 2017 at 12:07

CommunityBot

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answered Oct 21, 2014 at 16:47

Al Conrad

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