If you were browsing Udemy for Python courses in 2020, you almost certainly stumbled upon the behemoth: "Complete Python Developer in 2020: Zero to Mastery" by Andrei Neagoie. While the "2020" in its title might sound dated, this course became a gold standard for self-taught developers. It wasn't just another "learn syntax in 4 hours" tutorial; it was a full-blown bootcamp replacement.