[userbinator]

And in the other direction, here's a Python interpreter written in Lisp: https://github.com/metawilm/cl-python

[vindarel]

also in the interop topic:

Common Lisp for Python: https://github.com/marcoheisig/cl4py

call Python from CL: https://github.com/digikar99/py4cl2-cffi

[ginko]

Probably way faster as well.