code: def _get_fs(self, key: str, dms: bool = False) -> Union[str, float]:
          
          # Default range is a range of longitude.
          rng = (-90, 90) if key == 'lt' else (-180, 180)
          result = self.random.uniform(*rng, precision=6)
  
          if dms:
              return self._dd_to_dms(result, key)
  
          return result
docs: Get float number.
  
          :param key: Key (`lt` or `lg`).
          :param dms: DMS format.
          :return: Float number