Look at Gmail filters' XML

gistfile2.py

#!/usr/bin/python3
# -*- coding: utf-8 -*-

import xml.etree.ElementTree as ET

def getProperties(entry, ns):
    for app_property in entry.findall('apps:property', ns):
        name = app_property.attrib['name']
        if name in ('forwardTo', 'shouldTrash'):
            yield name

ns = {
    'atom':'http://www.w3.org/2005/Atom',
    'apps':'http://schemas.google.com/apps/2006',
}
tree = ET.parse('test_py-mailFilters.xml')
for index, entry in enumerate(tree.findall('atom:entry', ns)):
    app_property = entry.find('apps:property[@name="label"]', ns)
    label = app_property.attrib['value'] if app_property != None else ''
    print('%d,%s,%s' %(index, label, ','.join(getProperties(entry, ns))))

versione compatibile con Py 2.x e 3.x
(sempre by frafra)