def set_conflict_handler (self, handler):
        if handler not in ("ignore", "error", "resolve"):
            raise ValueError, handler % "invalid conflict_resolution value %r"
        self.conflict_handler = handler
dataset/ETHPy150Open skyostil/tracy/src/generator/Cheetah/Utils/optik/option_parser.py/OptionParser.set_conflict_handler/swapped operands of `%`