Python Drupal Services is a little module that lets you use Drupal Services in Python.
It's loosely based on several pieces of code found elsewhere:
- http://drupal.org/project/Python_Services
- http://www.speakingx.com/blog/2008/11/21/testing-out-drupals-service-module-using-python
- http://drupal.org/node/308629
It has not been maintained for many years.
See also this issue about how to continue.