Questions

1. What are functions, and when should we use them?
2. How can data be provided to functions?
3. What does indentation mean? Is it required?
4. What should be covered in the docstring function? How can I read the docstring function?
5. When could it be useful to use type annotations?
6. How can a function be designed if I don't know the exact number of arguments or their names beforehand?
7. What does anonymous function mean? When should they be used?