from usage.usage_feeders.de_usage_parameters import DeUsageParameters from usage.usage_feeders.us_new_york_city_usage_parameters import UsNewYorkCityUsageParameters class UsageFactory: def __init__(self, handler, city): self._handler = handler.lower().replace(' ', '_') self._city = city self.factory() def us_new_york_city(self): UsNewYorkCityUsageParameters(self._city) def ca(self): raise Exception('Not implemented') def de(self): DeUsageParameters(self._city) def es(self): raise Exception('Not implemented') def factory(self): getattr(self, self._handler, lambda: None)()