Maybe I'm blubing on this but... why? I mean if I am in Python why would I want to work in Lua? And if I am in Lua (which is often itself embedded in another language) why would I want Python?
I mean the latter question in two senses of the word. The first is that if I really wanted to embed Python into the other language why use Lua as a bridge? The second is that if I embedded Lua because of its lack of a robust library (think WoW's addons here) why would I want to enable that with Python's libraries?