This is a contrived example. Sure yes it can be done but seems hard to work with. It would be hard to debug for example. For speeding up pure python, the first

This is a contrived example. Sure yes it can be done but seems hard to work with. It would be hard to debug for example. For speeding up pure python, the first thing I would do is reach for numpy. It would be interesting to compare the performance of the lua-embedded code with a version using numpy.