def _parse_args(self, args):
        """self.parser->self.parsed_data"""
        # decode sys.argv to support unicode command-line options
        enc = DEFAULT_ENCODING
        uargs = [py3compat.cast_unicode(a, enc) for a in args]
        self.parsed_data, self.extra_args = self.parser.parse_known_args(uargs)
self.parser->self.parsed_data