code: def import_locations(self, marker_file):
          
          self._marker_file = marker_file
          data = utils.prepare_read(marker_file)
  
          for line in data:
              line = line.strip()
              if not line or line.startswith('#'):
                  continue
              chunk = line.split('#')
              data = chunk[0]
              comment = chunk[1].strip() if len(chunk) == 2 else None
              # Need maximum split of 2, because name may contain whitespace
              latitude, longitude, name = data.split(None, 2)
              name = name.strip()
              # Find matching start and end quote, and keep only the contents
              name = name[1:name.find(name[0], 1)]
              self[name.strip()] = Xearth(latitude, longitude, comment)
docs: Parse Xearth data files.
  
          ``import_locations()`` returns a dictionary with keys containing the
          xearth_ name, and values consisting of a :class:`Xearth` object and
          a string containing any comment found in the marker file.
  
          It expects Xearth marker files in the following format::
  
              # Comment
  
              52.015     -0.221 "Home"          # James Rowe's home
              52.6333    -2.5   "Telford"
  
          Any empty line or line starting with a '#' is ignored.  All data lines
          are whitespace-normalised, so actual layout should have no effect.  The
          above file processed by ``import_locations()`` will return the
          following ``dict`` object::
  
              {'Home': point.Point(52.015, -0.221, "James Rowe's home"),
               'Telford': point.Point(52.6333, -2.5, None)}
  
          Note:
              This function also handles the extended xplanet_ marker files whose
              points can optionally contain added xplanet specific keywords for
              defining colours and fonts.
  
          Args:
              marker_file (iter): Xearth marker data to read
          Returns:
              dict: Named locations with optional comments
  
          .. _xearth: http://hewgill.com/xearth/original/
          .. _xplanet: http://xplanet.sourceforge.net/