I believe that GIL-removal projects aim to preserve this behaviour: https://peps.python.org/pep-0703/#container-thread-safety https://peps.python.org/pep-0703/

I believe that GIL-removal projects aim to preserve this behaviour: https://peps.python.org/pep-0703/#container-thread-safety https://peps.python.org/pep-0703/#container-thread-safety That's why gilectomy carries an unreasonable single-threaded performance cost: many operations now need to take a lock where before they relied on the GIL.