def ParseFromString(self, value):
    super(FilterString, self).ParseFromString(value)
    try:
      self.query_parser_cls(self._value).Parse()
    except lexer.ParseError, e:
      raise type_info.TypeValueError((e) % "Malformed filter: %s")
dataset/ETHPy150Open google/grr/grr/lib/rdfvalues/plist.py/FilterString.ParseFromString/swapped operands of `%`