google-appengine-pysdk (Google Appengine Python SDK)

The Python SDK includes a web server application that simulates the App Engine
environment, including a local version of the datastore, Google Accounts, and
the ability to fetch URLs and send email directly from your computer using the
App Engine APIs. The Python SDK runs on any computer with Python 2.5 or 2.7, and
versions are available for Windows, Mac OS X and Linux. (The Python SDK is not
compatible with Python 3).