Python threads don't run simultaneously

Question

I\'m brand new to multi-threaded processing, so please forgive me if I butcher terms or miss something obvious.

The code below doesn\'t offer any time advantage over

Answer 1

There are good answers regarding the GIL you can look at.

In short, if your tasks are CPU-bound (like the ones you posted), threads are not going to help you. Python threads are good for IO-bound tasks, like retrieving a web page.