def _set_value_to_task(self, task_name, option_name, dist_option_name, value):
        import paver.options
        try:
            optholder = environment.options[task_name]
        except KeyError:
            optholder = paver.options.Bunch()
            environment.options[task_name] = optholder

        if value is not None:
            if getattr(self, "negative_opt") in dist_option_name:
                optholder[self.negative_opt[dist_option_name].replace('-', '_')] = False
            else:
                optholder[option_name] = value
dataset/ETHPy150Open paver/paver/paver/tasks.py/Task._set_value_to_task/swapped operands of `in`