Method start

pyvrp/ProgressPrinter.py:98–127

Outputs information about PyVRP and the data instance that is being solved.

(self, data: ProblemData)

            self._best_cost = datum.best_cost

    def start(self, data: ProblemData):
        """
        Outputs information about PyVRP and the data instance that is being
        solved.
        """
        if not self._print:
            return

        num_d = data.num_depots
        depot_text = f"{num_d} depot{'s' if num_d > 1 else ''}"

        num_c = data.num_clients
        client_text = f"{num_c} client{'s' if num_c > 1 else ''}"

        num_v = data.num_vehicles
        vehicle_text = f"{num_v} vehicle{'s' if num_v > 1 else ''}"

        num_vt = data.num_vehicle_types
        vehicle_type_text = f"{num_vt} vehicle type{'s' if num_vt > 1 else ''}"

        msg = _START.format(
            version=version("pyvrp"),
            depot_text=depot_text,
            client_text=client_text,
            vehicle_text=vehicle_text,
            vehicle_type_text=vehicle_type_text,
        )

        for line in msg.splitlines():
            logger.info(line)

    def end(self, result: Result):
        """