gmail_filters_xml.py

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

import xml.etree.ElementTree as ET  #import the xml library ElementTree

def getProperties(entry, ns):       #function to find if it is being trashed and/or forwarded
    for app_property in entry.findall('apps:property', ns):
        name = app_property.attrib['name']
        if name in ('forwardTo', 'shouldTrash'):
            yield name

def getAttribute(entry,ns,searched_attrib):     #function to find given attributes of entries
    string_attrib = 'apps:property[@name=\"'+ searched_attrib + '\"]'
    return_attrib = entry.find(string_attrib, ns)
    final_return_attrib = entry.find(string_attrib, ns).attrib['value'] if return_attrib != None else ''
    return final_return_attrib

ns = {
    'atom':'http://www.w3.org/2005/Atom',
    'apps':'http://schemas.google.com/apps/2006',
}
tree = ET.parse('mailFilters.xml')              #parse the gmail xml filter file
for index, entry in enumerate(tree.findall('atom:entry', ns)):      #search entries and extract attributes
    label = getAttribute(entry,ns,"label")
    fromField = getAttribute(entry,ns,"from")
    HTWField = getAttribute(entry,ns,"hasTheWord")
    print('%d,%s,%s,%s,%s' %(index, fromField, HTWField, label, ','.join(getProperties(entry, ns)))) #print in csv format

Look at https://docs.python.org/3/library/csv.html