def get_transfer_stop_pairs(self):
        """
        Get stop pairs through which transfers take place

        Returns
        -------
        transfer_stop_pairs: list
        """
        transfer_stop_pairs = []
        previous_arrival_stop = None
        current_trip_id = None
        for leg in self.legs:
            if leg.trip_id is not None and leg.trip_id != current_trip_id and previous_arrival_stop is not None:
                transfer_stop_pair = (previous_arrival_stop, leg.departure_stop)
                transfer_stop_pairs.append(transfer_stop_pair)
            previous_arrival_stop = leg.arrival_stop
            current_trip_id = leg.trip_id
        return transfer_stop_pairs
def get_transfer_stop_pairs(self):
        """
        Get stop pairs through which transfers take place

        Returns
        -------
        transfer_stop_pairs: list
        """
        transfer_stop_pairs = []
        previous_arrival_stop = None
        current_trip_id = None
        for leg in self.legs:
            if leg.trip_id is not None and leg.trip_id != current_trip_id and previous_arrival_stop is not None:
                transfer_stop_pair = (previous_arrival_stop, leg.departure_stop)
                transfer_stop_pairs.append(transfer_stop_pair)
            previous_arrival_stop = leg.arrival_stop
            current_trip_id = leg.trip_id
        return transfer_stop_pairs
def get_transfer_stop_pairs ( self ) : transfer_stop_pairs = [ ] previous_arrival_stop = None current_trip_id = None for leg in self . legs : if leg . trip_id is not None and leg . trip_id != current_trip_id and previous_arrival_stop is not None : transfer_stop_pair = ( previous_arrival_stop , leg . departure_stop ) transfer_stop_pairs . append ( transfer_stop_pair ) previous_arrival_stop = leg . arrival_stop current_trip_id = leg . trip_id return transfer_stop_pairs
Get stop pairs through which transfers take place

        Returns
        -------
        transfer_stop_pairs: list
Get stop pairs through which transfers take place