code: def longitude(self):
          '''Longitude in signed degrees (python float)'''
          sd = dm_to_sd(self.lon)
          if self.lon_dir == 'E':
              return +sd
          elif self.lon_dir == 'W':
              return -sd
          else:
              return 0f longitude(self):
          '''Longitude in signed degrees (python float)'''
          sd = dm_to_sd(self.lon)
          if self.lon_dir == 'E':
              return +sd
          elif self.lon_dir == 'W':
              return -sd
          else:
              return 0.
docs: Longitude in signed degrees (python float)