Is the GIL local to every Python process?

Question

Python

Let's say there are 2 programs that, after launching, launch a new thread to process some data in the background. As a result, there are 2 Python processes with 2 running threads in each (main + data_processing).
Will each process have its own local GIL, or will it be the same for all pythons? Those. trying to capture gil will be 4 threads, or will the contention be "in-process"?

Answer 1

Of course, the GIL is local to each process.
How could it be otherwise? Processes are by default unrelated.

Answer 2

Yes, so you can use the multiprocessing module to use all the CPU cores..