I see at least 3 advantages: 1. Threads are significantly cheaper than processes in terms of memory, setup and context switch overhead 2. Inter-thread-communi

I see at least 3 advantages: 1. Threads are significantly cheaper than processes in terms of memory, setup and context switch overhead 2. Inter-thread-communication is simpler and more performant than inter-process-communication 3. C extensions can share data structures across (sub)interpreters