+py.test: a mature full-featured testing tool
+Mock: Mocking and Testing Library
+python-nose: A unittest-based testing framework for python that makes writing and running tests easier
+BuildBot: system to automate the compile/test cycle required by most software projects to validate code changes.
+unittest/PyUnit: Unit testing framework
+doctest: Test interactive Python examples
+MiniMock: simple library for doing Mock objects with doctest.
+Coverage.py: tool for measuring code coverage of Python programs.