def add_handlers(self, logger, handlers):
        """Add handlers to a logger from a list of names."""
        for h in handlers:
            try:
                logger.addHandler(self.config['handlers'][h])
            except StandardError as e:
                raise ValueError((h, e) % 'Unable to add handler %r: %s')
dataset/ETHPy150Open anzev/hedwig/build/pip/pip/compat/dictconfig.py/DictConfigurator.add_handlers/swapped operands of `%`