I am trying to develop a facebook app written in Python running on Google App Engine, so i need to make my http://localhost:8080 to https://localhost:8080 since facebook is aski
From the docs:
The development web server does not support HTTPS connections. It ignores the secure parameter, so paths intended for use with HTTPS can be tested using regular HTTP connections to the development web server.
You can star issue 960 to request that support be added. Until then, my advice would be to run Apache or lighttpd as a proxy to the development server, and enable HTTPS on the front-end service only.