Nose2 is the successor of Nose and it is a Python-based Unit Testing framework that can run Doctests and UnitTests.

Nose2 is based on unittest hence it is referred to as extend unittest or unittest with the plugin that was designed to make testing simple and easier.

Nose uses collective tests from unittest.testcase and supports multiple functions for writing tests and exceptions.

Nose supports package fixtures, classes, modules, and complex initialization to be defined at a single time instead of writing frequently.