Chapter 9 9 CHAPTER PyUnit Overview PyUnit brings xUnit to Python. Python is an interpreted, interactive, object-oriented programming language, widely used for many different kinds of software develop- ment. Steve Purcell ported JUnit to Python to create PyUnit. It follows the generic xUnit model closely. The standard Python libraries have included PyUnit since Python 2.1. Python is open source software that is copyrighted but freely usable and distribut- able. PyUnit has the same terms as Python itself, with a stipulation that Steve Purcell