Utilities

This track teaches how to build focused command-line utilities in Python — programs that read input, do one job, and write output cleanly. A good utility is small enough to understand completely, reliable enough to trust in a pipeline, and sharp enough to do one thing without compromise.

Work through the Fundamentals track and the Python core-syntax module alongside this one: the concepts there are what make the patterns here meaningful. Once you understand how utilities compose, you will see why so much of real software is just utilities chained together.