Step 1. create Flask app on https://github.com/zhuby1973/code.git
Step 2. create an application From Git on OpenShift console
Step 3. input repository link, Context Dir and select python
Step 4. update service port from 8080 to 5000 once build
Step 5. verify the Flask application after restart
Step 6. you can edit the code in Git, then redeploy to get the application been updated!