Test-Driven Development with pytest: A Practice-Based Guide

Writing reliable Python code requires more than just hacking together a solution; it demands a structured approach to testing. This text-based course introduces you to the core principles of Test-Driven Development (TDD) using pytest, the industry-standard Python testing framework. By working through clear explanations and structured exercises, you will shift your mindset to write tests before writing implementation code, resulting in cleaner, more maintainable software. What you'll learn: - Understand the core philosophy of the Red-Green-Refactor cycle - Write clean and effective test assertions using pytest - Apply fixtures to manage test setup and teardown efficiently - Practice parameterization to test multiple scenarios with minimal code duplication - Mock external dependencies and APIs using modern testing techniques - Measure code coverage to identify untested paths in your application You will start with foundational testing terminology and the basic mechanics of pytest before progressing to real-world TDD workflows, mock objects, and test suite organization. This course is designed for beginner Python developers who want to write more robust code, with no prior testing experience required. Start building high-quality, bug-free Python applications today.