The full standard library is a work in progress; at the moment, there's only a couple of key parts of sys, os, and the like. But Ouroboros (https://github.com/pybee/ouroboros) is a project to develop a full standard library that can be integrated into any Python implementation. Effectively, you can use all the bits of the standard library that are written in Python by just compiling them; the rest requires native integration (which is the work in progress).