title: How do I know timestamp when my Python app was deployed on GAE?
body: <p>I need to know a value holding timestamp when my app was deployed on the GAE server. In runtime.</p>
  
  <p>Surely I could generate some Python constant in the deployment script. But is there an easier and more correct way to reach the goal?</p>
  
  <p>(I'd like not to use data store for that.)</p>