Used in https://github.com/mhenc/airflow/blob/master/airflow/dag_processing/manager.py#L613

should be straighforward
)
            all_tis.extend(tis)
        if dry_run:
            return all_tis
        count = len(all_tis)
        do_it = True
        if count == 0:
            print("Nothing to clear.")
            return 0
        if confirm_prompt:
            ti_list = "\n".join(str(t) for t in all_tis)
            question = f"You are about to delete these {count} tasks:\n{ti_list}\n\nAre you sure? [y/n]"
            do_it = utils.helpers.ask_yesno(question)
        if do_it:
            for dag in dags:
                dag.clear(
                    start_date=start_date,
                    end_date=end_date,
                    only_failed=only_failed,
                    only_running=only_running,
                    confirm_prompt=False,
                    include_subdags=include_subdags,
                    dag_run_state=dag_run_state,
                    dry_run=False,
                )
        else:
            count = 0
            print("Cancelled, nothing was cleared.")
        return count
    def __deepcopy__(self, memo):