> Is there anything inherent to the language that makes this global lock thing difficult to be without in Python, but not in other languages?

Both language and interpreter design. I was wanting to give a talk or at least write about some of the internals of the interpreter and language and how to do it better next time.

In case there is interest for this I might actually get around doing that for once.

(I have played around with a different from of GIL-less execution a few years back that was based on independent interpreters and message passing thread bound objects but I ran into so many issues with the interpreter :()