Saving XML files using ElementTree

Question

I\'m trying to develop simple Python (3.2) code to read XML files, do some corrections and store them back. However, during the storage step ElementTree adds this n

Answer 1

In order to avoid the ns0 prefix the default namespace should be set before reading the XML data.

ET.register_namespace('', "http://www.topografix.com/GPX/1/1")
ET.register_namespace('', "http://www.topografix.com/GPX/1/0")

Answer 2

If you try to print the root, you will see something like this: http://www.host.domain/path/to/your/xml/namespace}RootTag' at 0x0000000000558DB8>

So, to avoid the ns0 prefix, you have to change the default namespace before parsing the XML data as below:

ET.register_namespace('', "http://www.host.domain/path/to/your/xml/namespace")

Answer 3

It seems that you have to declare your namespace, meaning that you need to change the first line of your xml from:

<ns0:trk>

to something like:

<ns0:trk xmlns:ns0="uri:">

Once did that you will no longer get ParseError: for unbound prefix: ..., and:

elem.tag = elem.tag[(len('{uri:}'):]

will remove the namespace.

Answer 4

You need to register all your namespaces before you parse xml file.

For example: If you have your input xml like this and Capabilities is the root of your Element tree.

<Capabilities xmlns="http://www.opengis.net/wmts/1.0"
    xmlns:ows="http://www.opengis.net/ows/1.1"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:gml="http://www.opengis.net/gml"
    xsi:schemaLocation="http://www.opengis.net/wmts/1.0 http://schemas.opengis.net/wmts/1.0/wmtsGetCapabilities_response.xsd"
    version="1.0.0">

Then you have to register all the namespaces i.e attributes present with xmlns like this:

ET.register_namespace('', "http://www.opengis.net/wmts/1.0")
ET.register_namespace('ows', "http://www.opengis.net/ows/1.1")
ET.register_namespace('xlink', "http://www.w3.org/1999/xlink")
ET.register_namespace('xsi', "http://www.w3.org/2001/XMLSchema-instance")
ET.register_namespace('gml', "http://www.opengis.net/gml")