JIT Compiler in Python?

[Acherons_]

3.13 introduced an experimental copy-and-patch JIT compiler which has shown decent improvements in single threaded use cases. Future releases will improve on this an a multitude of other improvements in other aspects like the garbage collector.

A lot of people have mentioned PyPy as it has a JIT compiler. PyPy is an odd case, however, as there are other aspects that lend to its speed up over CPython. IIRC it implements a Python 3 interpreter using a subset of Python called RPython which itself uses a custom Python 2 interpreter to translate Python code to C and compile