code: def get_grid_prices_by_date(self, **params):
          
          service_url = "{url}/{params_path}".format(
              url=self.BROWSE_GRID_SERVICE_URL,
              params_path=self._construct_params(
                  params, self._REQ_PARAMS, self._OPT_PARAMS)
          )
          return self.make_request(
              service_url,
              headers=self._headers(),
              **params
          )
docs: {API_HOST}/apiservices/browsegrid/v1.0/{market}/{currency}/{locale}/
          {originPlace}/{destinationPlace}/
          {outboundPartialDate}/{inboundPartialDate}
          ?apiKey={apiKey}