code: def get_wharton_gsrs(self, sessionid, date=None):
          
          if date:
              date += " {}".format(self.get_dst_gmt_timezone())
          else:
              date = datetime.datetime.utcnow().strftime("%Y-%m-%d %H:%S")
          resp = requests.get('https://apps.wharton.upenn.edu/gsr/api/app/grid_view/', params={
              'search_time': date
          }, cookies={
              'sessionid': sessionid
          })
          if resp.status_code == 200:
              return resp.json()
          else:
              raise APIError('Remote server returned status code {}.'.format(resp.status_code))
docs: Make a request to retrieve Wharton GSR listings.