I don't know python well and I am starting to immerse in my own pile of to-dos and user requests for what I am building already but I should know python, I started making money in the industy with Perl in 1990 or so, and did PHP for a couple decades now, and a couple other stacks I am at least basically literate in enough to get an app up, but never picked up Python for some reason. Probably because coming from PHP it didn't really offer me much more that I needed. I am not a data scientist and that's where python seems really strong, industry wise.
But I hear you on selling stuff. I have no idea how I am going to "sell" anything for HiveStreams.Live, or how I will fund it's operations. I am taking the "Uber" approach. Build a thing, figure out how to make money with it later, maybe, hopefully, somehow. Cause SirCork gets soo hungry when he's broke. :)
RE: Script to create a CSV file with all financial transactions (i.e. for tax purposes)