[Answer]-Django cannot import name patterns on app engine as app is working fine on heroku but not working on app engine

That really isn’t how you run a Django app on GAE. What gave you the idea to point the script to urls.py?

For a start, you need to reference Django in the libraries setting in your app.yaml. Then, you need to set the script to the WSGI object within your project’s wsgi.py file: perhaps something like post.wsgi.app. See the documentation.