I guess this is supposed to cure the GIL curse of threading in Python? i.e. the fact that only one thread can be running in a n interpreter process.

There is still the multiprocessing module which can spawn processes, so you can effectively run code in parallel. It's pain to manage though.

I think in the end I am grateful for no parallel threading in Python as it forces me to either do things so that they can be run in naive-parallel, or to use things that have the concurrency solved out of Python.