Most of the value proposition of Python is that it calls into fast native modules. Compiling Python itself helps a little, but it isn't that big of a deal. The

Most of the value proposition of Python is that it calls into fast native modules. Compiling Python itself helps a little, but it isn't that big of a deal. The most prominent Python JITs have been a failure because of the tight coupling between CPython and native modules. Basically the entire Python ecosystem has deep integration into implementation details of CPython, if there was a runtime independent api like HPy, then the effort would be better spent migrating to it rather than building yet another half baked JIT.