def check_default(self, option, key, val):
        try:
            return option.check_value(key, val)
        except optparse.OptionValueError as exc:
            print(exc % "An error occurred during configuration: %s")
            sys.exit(3)
dataset/ETHPy150Open anzev/hedwig/build/pip/pip/baseparser.py/ConfigOptionParser.check_default/swapped operands of `%`