converter_name = 'Autodate'
converter_file_location = '/Users/pascal/watson/WEX/converters/autodate.xml'

def replaceConverter(self, converter_name, converter_file_location):
    with open(converter_file_location) as f:
        converter_text = f.read()
    for col in self.WEXcollections:
        XML = self.WEXget_XML(col)
        tree = ElementTree.fromstring(XML)
        for converter in tree.find('vse-config').find('converters').findall('converter'):
            if 'timing-name' in converter.attrib:
                if converter.attrib['timing-name'] == converter_name:
                    converter.find('parser').text = converter_text
                    break
        newXML = ElementTree.tostring(tree)
        self.updateXML(col, newXML)