PyTest - My Favorite Aspect of the Software Suite

The PyTest was very elegantly and professionally designed. It's an amazing software suite. And it's contributed to you by a lot of people that are really, really good at what they do. The final thing is mocks, not super useful for ML stuff but if you're doing pure software engineering in Python, mocks are lifesaver. So mock allows you to take that class signature of what you're trying to test and synthetically simulate its state with hard coding values.