Python Module Xml.etree.elementtree Modifies Xml Namespace Keys Automatically

I've noticed that python ElementTree module, changes the xml data in the following simple example : import xml.etree.ElementTree as ET tree = ET.parse('./input.xml') tree.write('.

Solution 1:

You would need to register the namespaces for your xml as well as their prefixes with ElementTree before reading/writing the xml using ElementTree.register_namespace function. Example -

import xml.etree.ElementTree as ET

ET.register_namespace('','http://schemas.xxx/2004/07/Server.Facades.ImportExport')
ET.register_namespace('i','http://www.a.org')
ET.register_namespace('d3p1','http://schemas.datacontract.org/2004/07/Management.Interfaces')

tree = ET.parse("./input.xml")
tree.write("./output.xml")

Without this ElementTree creates its own prefixes for the corresponding namespaces, which is what happens for your case.

This is given in the documentation -

xml.etree.ElementTree.register_namespace(prefix, uri)

Registers a namespace prefix. The registry is global, and any existing mapping for either the given prefix or the namespace URI will be removed. prefix is a namespace prefix. uri is a namespace uri. Tags and attributes in this namespace will be serialized with the given prefix, if at all possible.

(Emphasis mine)