Multiple XML Namespaces in tag with LXML

Question

I am trying to use Pythons LXML library to create a GPX file that can be read by Garmin\'s Mapsource Product. The header on their GPX files looks like this

Answer 1

The problem is with your attribute name.

attrib={"{xsi}schemaLocation" : schemaLocation},

puts schemaLocation in the xsi namespace.

I think you meant

attrib={"{" + xsi + "}schemaLocation" : schemaLocation}

to use the URL for xsi. This matches your uses of namespace variables in the element name. It puts the attribute in the http://www.w3.org/2001/XMLSchema-instance namespace

That gives the result of

<?xml version='1.0' encoding='UTF-8' standalone='yes'?>
<gpx xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
     xmlns="http://www.topografix.com/GPX/1/1" 
     xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd" 
     version="1.1" 
     creator="My Product"/>