If you are using Python and Google Cloud Platform, this will Simplify Life for you (Part 2)

dag.py

def print_haversine():
    from mypythonlib import myfunctions
    x1, y1, x2, y2 = 1, 2, 3, 4
    haversine_distance = myfunctions.haversine(x1, y1, x2, y2)
    print(f'The haversine distance between ({x1}, {y1}) and ({x2}, {y2}) est {haversine_distance}')


dag = DAG('haversine-distance-dag',
          default_args=DEFAULT_ARGS,
          schedule_interval=None,
          catchup=False)
with dag:
    print_haversine_task = PythonOperator(
        task_id='print-haversine-distance',
        python_callable=print_haversine
    )