A wiki page Built on Google App Engine using Python The readme has not been tested, and assumes you have the appengine python sdk at ~/appengine-python, and you have it on your system path.
After checking out this project navigate to the root folder of the project using the terminal.
Do an "ls", you should see a folder name "app/"
While here create an virtual env for python.
virtualenv env Then activate the virtual env
source gcd/bin/activate Now install all the dependencies
pip install webapp2
Link the appengine sdk to the virtual env
ln -s ~/appengine-python/google env/lib/python2.7/site-packages/google
Now you can run the app using
dev_appserver.py app