You should have included example for multiprocessing too. Also more practical example, easy to understand real world use case. Also I would suggest you to explore joblib, it much better option than the built-in implementation. It have a common api for peocess based & thread based parallelism.

Good write up👍

I wonder why you didn't mention asynchronous programming with the async keyword.

Right now, they are the preferred way when it comes to IO-bound operations.

Anyway, the implantation of GIL is not defined by Python per se, it is just a well-known design feature of CPython. The other Python implementations are often GIL-free.