Lua and Python are two of the most widely used scripting languages nowadays, according to the TIOBE and PYPL indices. While Lua is often used for developing games and embedded systems, Python is very popular in the data science, machine learning and web development communities. They both offer C APIs, which are generally used for writing perfomancecritic routines and interfaces with other C libraries. Our work aims to develop a library that lets Python interact with Lua, and vice versa, and that can be loaded by either one like a regular add-on module. Our library is based on the Lupa project, a Python extension module that allows Python to interact with Lua, and vice versa, but cannot be loaded from Lua. We aim to address this and other issues, by refactoring the source code of Lupa and developing an auxiliary Lua library.