1. Define testing requirements and coverage goals.
2. Set up pytest and configure pytest.ini/pyproject.toml.
3. Write failing tests based on TDD principles (RED).
4. Implement minimal code to pass the tests (GREEN).
5. Refactor code and tests for clarity and maintainability (REFACTOR).
6. Use fixtures for setup, teardown, and data provisioning.
7. Mock external dependencies to isolate units of code.
8. Run tests and analyze coverage reports.