How to use the fritzconnection.fritzconnection.FritzSCDPParser function in fritzconnection

def _read_services(self, services):
        """Get actions from services."""
        for service in services:
            parser = FritzSCDPParser(self.address, self.port, service)
            actions = parser.get_actions(self.action_parameters)
            service.actions = {action.name: action for action in actions}
            self.services[service.name] = service

def __init__(self, address, port, service, filename=None):
        """
        Reads and parses a SCDP.xml-file from FritzBox.
        'service' is a tuple of containing:
        (serviceType, controlURL, SCPDURL)
        'service' is a FritzService object:
        """
        self.state_variables = {}
        self.service = service
        if filename is None:
            # access the FritzBox
            super(FritzSCDPParser, self).__init__(address, port,
                                                  service.scpd_url)
        else:
            # for testing read the xml-data from a file
            super(FritzSCDPParser, self).__init__(None, None, filename=filename)