code: def get_continent(self, callsign, timestamp=timestamp_now):
          
          return self.get_all(callsign, timestamp)[const.CONTINENT]
docs: Returns the continent Identifier of a callsign
  
          Args:
              callsign (str): Amateur Radio callsign
              timestamp (datetime, optional): datetime in UTC (tzinfo=pytz.UTC)
  
          Returns:
              str: continent identified
  
          Raises:
              KeyError: No Continent found for callsign
  
          Note:
              The following continent identifiers are used:
  
              - EU: Europe
              - NA: North America
              - SA: South America
              - AS: Asia
              - AF: Africa
              - OC: Oceania
              - AN: Antarctica