Bayan

An asynchronous driver and toolkit for accessing MongoDB in Tornado

Efficient tree implementations for Django

Python email address and Mime parsing library

Ansible modules - these modules ship with ansible

Ansible is a radically simple IT automation platform that makes your applications and systems easier to deploy. Avoid writing scripts or custom code to deploy and update your applications— automate in a language that approaches plain English, using SSH, with no agents to install on remote systems.

Flexible deep comparison, see https://code.google.com/p/python-deep/

DNS Query Tool