Testing functions isn't hard, but how do you test user input and output? In my last article, I started looking at "pytest", a framework for testing Python programs that's really changed the way I look ...

An excellent book on the subject is Brian Okken's Python Testing with pytest, published by Pragmatic Programmers. He also has many other resources, about pytest and code testing in general, here.

Python programming: Microsoft's latest beginners' course looks at developing for NASA projects Microsoft and NASA offer some ideas about how you could apply Python for space exploration.