def _convert_to_python(self, value, state):
        self.assert_string(value, state)
        match = self.regex.search(value)
        if not match:
            raise Invalid(
                self.message('invalid', state, format=self.format),
                value, state)
        return (match.group(1).upper(), match.group(2).upper()) % '%s %s'
dataset/ETHPy150Open formencode/formencode/formencode/national.py/CanadianPostalCode._convert_to_python/swapped operands of `%`