pytest-mock is a pypi library with a maintainer paid by Tidelift

pytest-mock is a part of the Tidelift Subscription

The pytest framework makes it easy to write small tests, yet scales to support complex functional testing for applications and libraries.

pytest mock is a thin-wrapper around the mock package for easier use with py.test.

Features:

• Detailed info on failing assert statements (no need to remember self.assert* names);
• Auto-discovery of test modules and functions;
• Modular fixtures for managing small or parametrized long-lived test resources;
• Can run unittest (including trial) and nose test suites out of the box;
• Python Python 3.5+ and PyPy 3;
• Rich plugin architecture, with over 315+ external plugins and thriving community;

You can learn more on the pytest website.