On June 5, 2025, PEP-0734 was accepted. Judging by the information on the official website, it is a continuation of PEP-0554. This PEP proposes adding a new interpreters module to support checking, creating, and running code in multiple interpreters within the current process. And going further, it is a continuation of PEP-0684, which proposes one GIL per interpreter.

Several full-fledged interpreters working side by side. What are the advantages?