Testing

Build a Hash Table in Python With TDD – Real Python

In this step-by-step tutorial, you’ll implement the classic hash table data structure using Python. Along the way, you’ll learn how to cope with various challenges such as hash code collisions while practicing test-driven development (TDD). » Real Python | realpython.com

Unit testing your code’s performance, part 1: Big-O scaling

Your software’s speed needs some form of testing; big-O scaling is a good starting point. » Itamar Turner-Trauring | pythonspeed.com