- Exercise 18: Final line - 8 exercises
- Exercise 19: etc-passwd-to-dict - 2 exercises
- Exercise 20: Word count - 5 exercises
- Exercise 21: Longest word per file - 3 exercises
- Exercise 22: Reading and writing CSV - 4 exercises
- Exercise 23: JSON - 4 exercises
- Exercise 24: Reverse lines - 4 exercises
- Get the book: https://www.amazon.de/Python-Workout-50-Essential-Exercises/dp/1617295507
- About Reuven M. Lerner and his works: https://lerner.co.il/