The mockextras library is designed to be used with the unittest.mock library in python 3 or the mock backport of this (http://www.voidspace.org.uk/python/mock/) in python 2. The mockextras library adds a number of features that are found in other mocking libraries namely:

• a fluent API for the configuration of stubs
• stubs
• matchers

The documentation is here: http://mockextras.readthedocs.org/