testdag.py

from datetime import timedelta

from airflow import DAG
from airflow.operators.bash import BashOperator
from airflow.utils.dates import days_ago

def_args = {
    'owner': 'airflow',
    'depends_on_past': False,
    'email_on_failure': False,
    'email_on_retry': False,
    'retries': 1,
    'retry_delay': timedelta(minutes=5)

}

with DAG('testdag', default_args=def_args, description='simple testing dag', schedule_interval=timedelta(days=1), start_date=days_ago(2)) as dag:
    t1 = BashOperator(task_id='print_date', bash_command='date')
    t2 = BashOperator(task_id='do_noting', bash_command='sleep 5')

    t1 >> t2