text: #
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  # 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
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  # 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 TaskGroup."""
  
  from airflow.models.dag import DAG
  from airflow.operators.bash import BashOperator
  from airflow.operators.dummy import DummyOperator
  from airflow.utils.dates import days_ago
  from airflow.utils.task_group import TaskGroup
  
  # [START howto_task_group]
  with DAG(dag_id="example_task_group", start_date=days_ago(2), tags=["example"]) as dag:
      start = DummyOperator(task_id="start")
  
      # [START howto_task_group_section_1]
      with TaskGroup("section_1", tooltip="Tasks for section_1") as section_1:
          task_1 = DummyOperator(task_id="task_1")
          task_2 = BashOperator(task_id="task_2", bash_command='echo 1')
          task_3 = DummyOperator(task_id="task_3")
  
          task_1 >> [task_2, task_3]
      # [END howto_task_group_section_1]
  
      # [START howto_task_group_section_2]
      with TaskGroup("section_2", tooltip="Tasks for section_2") as section_2:
          task_1 = DummyOperator(task_id="task_1")
  
          # [START howto_task_group_inner_section_2]
          with TaskGroup("inner_section_2", tooltip="Tasks for inner_section2") as inner_section_2:
              task_2 = BashOperator(task_id="task_2", bash_command='echo 1')
              task_3 = DummyOperator(task_id="task_3")
              task_4 = DummyOperator(task_id="task_4")
  
              [task_2, task_3] >> task_4
          # [END howto_task_group_inner_section_2]
  
      # [END howto_task_group_section_2]
  
      end = DummyOperator(task_id='end')
  
      start >> section_1 >> section_2 >> end
  # [END howto_task_group]
  