PyGravatar is a set of Python bindings for the Gravatar API.
To install, run pip install py-gravatar. To verify that the library is working and can connect to the server, run:
>>> import gravatar
>>> user = gravatar.User(<email>, password=<password>) # substitute the email address and password of a Gravatar account
>>> user.test()
1315290974 # however many seconds have passed since 1970
Full API documentation is available here. For more information, see the home page.