Use VirtualEnv to manage dependencies on GAE project

appengine_config.py

import os
from google.appengine.ext import vendor

"""
1. Create a virtualenv directory at the root of your project, name it "venv"
2. Install packages needed in your project
3. Freeze it and save the package list into requirements.txt file, add it to
   version control
4. Exclude "venv" directory from version control
5. Save the content of this file as "appengine_config.py", and put it at the
   root of your project
"""

VENV = os.path.join(os.path.dirname(__file__), "venv")
vendor.add(VENV)