Actually I was referring to manual translation of Python code to Rust. My experience with PyPy has been rather bad, unfortunately (it runs my code at less than half the speed of CPython) and I figure human translation should be a lot more effective than JIT optimization.
Maybe you should send your code to the PyPy team. I bet they will look into it and see how they could improve their JIT compiler. Last time I checked the project, they had a full benchmark running for each release to spot regressions and to track improvements
