you could add few type hints to the code files so that it would be easy to interpret the code in a much easier way.

[vignesh1507]

This can be taken as a suggestion and not as a serious issue, if needed any help with the type hints part then i can help you with that part.

[Querela]

As far as I'm concerned, this library has type hints. But everything can be improved, so if you have good suggestions, I can review them ...

Please also check your changes with mypy. In the setup.cfg all the dev tools are defined for typing, styling/formatting, building etc.
You will also notice that I'm intentionally excluding the vendor library ply since it's just a copy and future updates will simply replace the source files. So, any type hinting there is a bit wasted should better be contributed to the project itself.