Can one source code be deployed to Openshift, Heroku and Google App Engine at once?
PostgreSQL is not available on GAE, so this code will definitely not run there.
As subject, is is possible with just one source code, we can deploy our code to Openshift or Google App Engine? Heroku is not necessarily in my case. 
My application is using Python Flask + PostgreSQL 9.1. I love the easiness in Openshift when I configure my technology stack, but is the case will be same with GAE?
Thanks!