Lab: Load the shelf's files and check Tom's notebook

Module 8 · Lab · About 60 minutes · Needs: lessons 1 to 4 of this module, and the Module 7 lab (the booknook folder in your Drive)

What you are building

Amira's request for this module is "Load the real files and fix Tom's notes." The four lessons built every piece: loaders for the CSV and JSON files (Lesson 3), try and except to keep going past a bad line (Lesson 1), files opened with with and encoding="utf-8" (Lesson 2), and a hunt that named all five faults in Tom's notebook (Lesson 4).

This lab joins them into one new module, booknook/storage.py, with the five names the course fixed for it: load_books, load_members, load_loans, save_loans and parse_notebook. parse_notebook reads Tom's twelve lines and gives back two lists: the clean loans, and a problem for every faulty line, with its line number. The clean loans are saved to a new file, so the September loans are no longer lost.

Open a new Colab notebook, call it module-08-lab.ipynb, and run each cell in order.