old_contents: # -*- coding: utf-8 -*-
  #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  
  """Example DAG demonstrating the usage of the SubDagOperator."""
  
  import airflow
  from airflow.example_dags.subdags.subdag import subdag
  from airflow.models import DAG
  from airflow.operators.dummy_operator import DummyOperator
  from airflow.operators.subdag_operator import SubDagOperator
  
  DAG_NAME = 'example_subdag_operator'
  
  args = {
      'owner': 'airflow',
      'start_date': airflow.utils.dates.days_ago(2),
  }
  
  dag = DAG(
      dag_id=DAG_NAME,
      default_args=args,
      schedule_interval="@once",
  )
  
  start = DummyOperator(
      task_id='start',
      default_args=args,
      dag=dag,
  )
  
  section_1 = SubDagOperator(
      task_id='section-1',
      subdag=subdag(DAG_NAME, 'section-1', args),
      default_args=args,
      dag=dag,
  )
  
  some_other_task = DummyOperator(
      task_id='some-other-task',
      default_args=args,
      dag=dag,
  )
  
  section_2 = SubDagOperator(
      task_id='section-2',
      subdag=subdag(DAG_NAME, 'section-2', args),
      default_args=args,
      dag=dag,
  )
  
  end = DummyOperator(
      task_id='end',
      default_args=args,
      dag=dag,
  )
  
  start >> section_1 >> some_other_task >> section_2 >> end
  
new_contents: # -*- coding: utf-8 -*-
  #
  # Licensed to the Apache Software Foundation (ASF) under one
  # or more contributor license agreements.  See the NOTICE file
  # distributed with this work for additional information
  # regarding copyright ownership.  The ASF licenses this file
  # to you under the Apache License, Version 2.0 (the
  # "License"); you may not use this file except in compliance
  # with the License.  You may obtain a copy of the License at
  #
  #   http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing,
  # software distributed under the License is distributed on an
  # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, either express or implied.  See the License for the
  # specific language governing permissions and limitations
  # under the License.
  
  """Example DAG demonstrating the usage of the SubDagOperator."""
  
  import airflow
  from airflow.example_dags.subdags.subdag import subdag
  from airflow.models import DAG
  from airflow.operators.dummy_operator import DummyOperator
  from airflow.operators.subdag_operator import SubDagOperator
  
  DAG_NAME = 'example_subdag_operator'
  
  args = {
      'owner': 'airflow',
      'start_date': airflow.utils.dates.days_ago(2),
  }
  
  dag = DAG(
      dag_id=DAG_NAME,
      default_args=args,
      schedule_interval="@once",
  )
  
  start = DummyOperator(
      task_id='start',
      dag=dag,
  )
  
  section_1 = SubDagOperator(
      task_id='section-1',
      subdag=subdag(DAG_NAME, 'section-1', args),
      dag=dag,
  )
  
  some_other_task = DummyOperator(
      task_id='some-other-task',
      dag=dag,
  )
  
  section_2 = SubDagOperator(
      task_id='section-2',
      subdag=subdag(DAG_NAME, 'section-2', args),
      dag=dag,
  )
  
  end = DummyOperator(
      task_id='end',
      dag=dag,
  )
  
  start >> section_1 >> some_other_task >> section_2 >> end
  
subject: Remove Redundant Information in Example Dags (#5497)