Example DAG to showcase repeating dag parameter

example_dag.py

# Normal DAG without Context Manager
args = {
    'owner': 'airflow',
    'start_date': airflow.utils.dates.days_ago(2),
}

dag = DAG(
    dag_id='example_dag',
    default_args=args,
    schedule_interval='0 0 * * *',
)

run_this_last = DummyOperator(
    task_id='run_this_last',
    dag=dag,  # You need to repeat this for each task
)

run_this_first = BashOperator(
    task_id='run_this_first',
    bash_command='echo 1',
    dag=dag,  # You need to repeat this for each task
)

run_this_first >> run_this_last

example_dag_with_context.py

# DAG with Context Manager

args = {
    'owner': 'airflow',
    'start_date': airflow.utils.dates.days_ago(2),
}

with DAG(dag_id='example_dag', default_args=args, schedule_interval='0 0 * * *') as dag:

	run_this_last = DummyOperator(
	    task_id='run_this_last'
	)

	run_this_first = BashOperator(
	    task_id='run_this_first',
	    bash_command='echo 1'
	)

	run_this_first >> run_this_last