code: def _parse_lists(self, match):
          '''Parse lists.'''
  
          # Don't parse usernames here
          if match.group(4) is None:
              return match.group(0)
  
          pre, at_char, user, list_name = match.groups()
          list_name = list_name[1:]
          if self._include_spans:
              self._lists.append((user, list_name, match.span(0)))
          else:
              self._lists.append((user, list_name))
  
          if self._html:
              return '%s%s' % (pre, self.format_list(at_char, user, list_name)f _parse_lists(self, match):
          '''Parse lists.'''
  
          # Don't parse usernames here
          if match.group(4) is None:
              return match.group(0)
  
          pre, at_char, user, list_name = match.groups()
          list_name = list_name[1:]
          if self._include_spans:
              self._lists.append((user, list_name, match.span(0)))
          else:
              self._lists.append((user, list_name))
  
          if self._html:
              return '%s%s' % (pre, self.format_list(at_char, user, list_name))
docs: Parse lists.