docs: def import_locations(self, zone_file):
          """Parse zoneinfo zone description data files.
  
          ``import_locations()`` returns a list of :class:`Zone` objects.
  
          It expects data files in one of the following formats::
  
              AN	+1211-06900	America/Curacao
              AO	-0848+01314	Africa/Luanda
              AQ	-7750+16636	Antarctica/McMurdo	McMurdo Station, Ross Island
  
          Files containing the data in this format can be found in the
          :file:`zone.tab` file that is normally found in
          :file:`/usr/share/zoneinfo` on UNIX-like systems, or from the `standard
          distribution site`_.
  
          When processed by ``import_locations()`` a ``list`` object of the
          following style will be returned::
  
              [Zone(None, None, "AN", "America/Curacao", None),
               Zone(None, None, "AO", "Africa/Luanda", None),
               Zone(None, None, "AO", "Antartica/McMurdo",
                    ["McMurdo Station", "Ross Island"])]
  
          Args:
              zone_file (iter): ``zone.tab`` data to read
  
          Returns:
              list: Locations as :class:`Zone` objects
  
          Raises:
              FileFormatError: Unknown file format
  
          .. _standard distribution site: ftp://elsie.nci.nih.gov/pub/
          """
          self._zone_file = zone_file
          field_names = ('country', 'location', 'zone', 'comments')
  
          data = utils.prepare_csv_read(zone_file, field_names, delimiter=r"	")
  
          for row in (x for x in data if not x['country'].startswith('#')):
              if row['comments']:
                  row['comments'] = row['comments'].split(', ')
              self.append(Zone(**row))