Provide a simple example of use with classes 👍🏻

[oijkn]

Could you provide an example of a Poetry project with a structure like below ?

├── src
│   └── pyproject
│       ├── classes
│       │   ├── class.py
│       │   └── __init__.py
│       ├── execptions
│       │   ├── execption.py
│       │   └── __init__.py
│       ├── __init__.py
│       ├── module.py
│       └── py.typed