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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def import_pf_config(self):
 """ Creates power flow config class and imports config from file Returns ------- PFConfigDing0 PFConfigDing0 object """


        scenario = cfg_ding0.get("powerflow", "test_grid_stability_scenario")
        start_hour = int(cfg_ding0.get("powerflow", "start_hour"))
        end_hour = int(cfg_ding0.get("powerflow", "end_hour"))
        start_time = datetime(1970, 1, 1, 00, 00, 0)

        resolution = cfg_ding0.get("powerflow", "resolution")
        srid = str(int(cfg_ding0.get('geo', 'srid')))

        return PFConfigDing0(scenarios=[scenario],
                             timestep_start=start_time,
                             timesteps_count=end_hour-start_hour,
                             srid=srid,
                             resolution=resolution)