code: def sunrise(self, date=None, zenith=None):
          
          return (segment.sunrise(date, zenith) for segment in self)
docs: Calculate sunrise times for locations.
  
          Args:
              date (datetime.date): Calculate rise or set for given date
              zenith (str): Calculate sunrise events, or end of twilight
          Returns:
              list of list of datetime.datetime: The time for the sunrise for
                  each point in each segment