Most of it ok, but the notion of truthiness and falsiness being pythonic (or even allowed!) was python's billion dollar mistake. It's a magnet for bugs (e.g. s

Most of it ok, but the notion of truthiness and falsiness being pythonic (or even allowed!) was python's billion dollar mistake. It's a magnet for bugs (e.g. stock items with a price of zero being treated as items with no price at all).