How To Include The Namespaces Into A Xml File Using Lxml?
I am creating a new xml file from scratch using python and the lxml library.
Solution 1:
Here is how it can be done:
from lxml import etree
attr_qname = etree.QName("http://www.w3.org/2001/XMLSchema-instance", "schemaLocation")
nsmap = {None: "http://www.xxxx",
"stm": "http://xxxx/1/0/0",
"xsi": "http://www.w3.org/2001/XMLSchema-instance"}
root = etree.Element("route",
{attr_qname: "http://xxxx/1/0/0 stm_extensions.xsd"},
version="1.1",
nsmap=nsmap)
print etree.tostring(root)
Output from this code (line breaks have been added for readability):
<routexmlns:stm="http://xxxx/1/0/0"xmlns="http://www.xxxx"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://xxxx/1/0/0 stm_extensions.xsd"version="1.1"/>The main "trick" is to use QName to create the xsi:schemaLocation attribute. An attribute with a colon in its name cannot be used as the name of a keyword argument.
I've added the declaration of the xsi prefix to nsmap, but it can actually be omitted. lxml defines default prefixes for some well-known namespace URIs, including xsi for http://www.w3.org/2001/XMLSchema-instance.
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