pytest Quick Start Guide

Foreword

pytest is one of the projects that show off the best qualities of Python; it is the easiest Python testing framework to get started and also the most powerful. The pytest developers leverage metaprogramming to help users; we can write tests as plain functions and use the assert keyword for checks, which means we can use any Python expression as a check, and we don't need to memorize the names of dozens of assertThis, assertThat methods. When there is a test failure, pytest uses sophisticated introspection to show the difference between the expected value and the value returned by the code under test. Introspection and decorators are also used to provide fixtures, parameters, grouping, skipping, and such like.

pytest is basically ...