i spend most of my time, mostly in the realm of java. But when i get a chance to choose, i usually choose python for some projects. So i've got most of my experiences, sort of java and python, how to get them to talk to each other. Ok. And you said you contribute to this thing called j pi. J p, i, what's the tory of that? J p, you had a particular request from a client to deal with an old, kind of proprietary binary form at  a statistical software package. This format had been around for a long time. It was really wrangling bits and bites, dealing with pages of data inside this