Python threading underlying implementation for Lock is mutex or spinlock

Question

Ok, so I am bit confused about locks in python3

Or maybe my naivety in this area is the source of confusion :(

The threading module talks about Lock and says that acquire will block unless the lock is released. There is no mention of mutex or spinlock

And when I try to learn about locks in general, I come across mutex and spinlock in pthread which says that a mutex will put the thread is waiting state but spinlock will keep it busy

And threading documentation says that any thread can release the Lock which is not generally the case with pthread :)

So in python, the Lock is a just a mutex ? Or we have spinlocks in python ?

Came across this question, which I frankly didn't understand, but the person says that python is holding spinlock