Testing & Debugging

For students who've finished Python II: Deeper Into the Language — a practical process for finding real bugs (reading a traceback backward, print-statement bisection) and writing trustworthy pytest tests, from your first assert to red-green-refactor, one small concept at a time.

Course content

1. 1. Glossary
2. 2. Bugs Are Normal: A Debugging Mindset
3. 3. Reading the Traceback Backward: Finding the Real Cause
4. 4. Print-Statement Debugging and Bisection
5. 5. Why Test? From assert to pytest
6. 6. Writing and Running Your First pytest Tests
7. 7. Testing for Errors: pytest.raises
8. 8. Organizing a Test Suite
9. 9. What Makes a Test Trustworthy
10. 10. Thinking in Edge Cases
11. 11. Reusable Setup: pytest Fixtures
12. 12. Parametrized Tests
13. 13. Red, Green, Refactor: Writing a Test First
14. 14. Pinning Down a Real Bug With a Test
15. 15. Capstone: Debug and Test a Small Program