title: Using PythonOperator's output to another PythonOperator from airflow
body: <p>I have two PythonOperator in Airflow. I need to use the output from one operator to another. How can I do that ?</p>
  
  <pre><code>def get_data(**kwargs):
      '''SQL here converted to df
      '''
      return df
  run_this = PythonOperator(
      task_id='data',
      provide_context=True,
      python_callable=get_data,
      dag=dag,
  )
  </code></pre>
  
  <p>How can I use the output from <code>run_this</code> to another python operator ?</p>