Consider using `attrs` instead of `pydantic`

Your code is clean, and the codebase should be small, but using `pydantic` adds extra packages, which might not be ideal for this simple project. You should use `attrs` instead—no extra package load.  

You can check out my SpyIP: https://github.com/Almas-Ali/SpyIP project, where I wrapped `ip-api.com` with `attrs`. I initially started with `pydantic` but later moved to `attrs`.  