code: def _parse_literal_list(self, indent):
          
          if self._cur_token['type'] not in self._literals:
              raise Exception(
                  "Parser failed, _parse_literal_list was called on non-literal"
                  " {} on line {}.".format(
                      repr(self._cur_token['value']), self._cur_token['line']
                  )
              )
  
          # find next token after whitespace without incrementing
          temp_position = self._cur_position
          while (
              temp_position < self.num_tokens-1 and (
                  self.tokens[temp_position]['type'] is TT.ws or
                  self.tokens[temp_position]['type'] in self._literals
              )
          ):
              temp_position += 1
          next_token = self.tokens[temp_position]
  
          # end of stream
          if next_token['type'] is TT.ws:
              return self._cur_token['value']
          elif next_token['type'] is TT.comma:
              return self._parse_comma_list()
          elif next_token['type'] is TT.lbreak:
              while (
                  temp_position < self.num_tokens-1 and
                  self.tokens[temp_position]['type'] in (TT.lbreak, TT.ws)
              ):
                  temp_position += 1
              if self.tokens[temp_position]['type'] in self._literals:
                  return self._parse_newline_list(indent)
              else:
                  rval = self._cur_token['value']
                  self._increment()
                  return rval
          else:
              rval = self._cur_token['value']
              self._increment()
              return rval
docs: Parse a list of literals.