At the outset of his PyCon US 2026 talk, Trey Hunner said that his goal was for attendees to stop representing filesystem paths as strings and to use pathlib instead. That's kind of a tall order, at least for longtime Python users, since string-based paths have been pervasive—and mostly work. It is that "mostly" part that makes Hunner want to see things change, of course, so he set out to describe a lesser-known corner of the language and to try to change some minds.