Course Progress Tracker

• Add courses with a total lesson count
• Mark individual lessons as complete
• Display a text progress bar per course
• Save and load state from a JSON file

Follow these steps in order. Each one builds on the previous.

1. Step 1

   Define the course data structure

2. Step 2

   Write add_course() and add_lesson() functions

3. Step 3

   Implement mark_complete() logic

4. Step 4

   Build a text progress bar renderer

5. Step 5

   Write JSON save and load functions

6. Step 6

   Create a menu loop for user interaction

7. Step 7

   Display all courses with progress on startup

• Python JSON module
• Real Python CLI apps
• Python os module