project-root/ ├── libraries/ # Utility modules (helpers, custom functions, etc.) │ └── util.py ├── tests/ # Test cases organized by feature/module │ ├── test_users.py │ ├── test_posts.py ...
├── problems/ # Problem solutions organized by name │ ├── two_sum/ # Individual problem directories │ │ ├── config.yml # Problem metadata and configuration │ │ ├── two_sum.py # Python solution │ │ ├── ...