An in depth discussion of Test Driven Development (TDD) should include a discussion of Test First. So that's where we start.

• Why write tests first?
• How do you know what tests to write?
• What are the steps for test first?
• Isn't this just TDD?
• Functional Tests vs Unit Tests

Links:

• Test First Programming / Test First Development - Python Testing
• My reaction to "Is TDD Dead?" - Python Testing
• Episode 23: Lessons about testing and TDD from Kent Beck
• Talk Python, Episode #145 2017 Python Year in Review
• PyCon 2018 in Cleveland, Ohio | May 9-17
• Python Bytes Podcast
• Python Testing with pytest: Simple, Rapid, Effective, and Scalable: Brian Okken: 9781680502404: Amazon.com: Books