airflow-tutorial-gist-04.py

from airflow import DAG
from airflow.operators.postgres_operator import PostgresOperator
from airflow.sensors.sql_sensor import SqlSensor
from datetime import datetime, timedelta

# Default DAG parameters
default_args = {
    'owner': 'airflow',
    'depends_on_past': False,
    'start_date': datetime(2018, 10, 1),
    'email': ['oncallapi@yourdomain.com'],
    'email_on_failure': False,
    'email_on_retry': False,
    'retries': 3,
    'retry_delay': timedelta(minutes=30),
    'queue': 'default',
}

dag = DAG('tutorial', default_args=default_args, schedule_interval='@daily')