Python mastery and Computational Thinking

Hi! I'd love to see Unit Tests for Python to practice the exercise questions and earn mastery points, while projects and challenges continue to remain the core of programming on KA.

This Computational Thinking course actually does offer mastery for the first unit of Python, so I'm hoping that can be extended to enabling mastery on all the Python course units too.

I presume Computational Thinking is built for a specific curriculum/classroom setting. But for a general-purpose computer literacy course, I would love to see additional units each focusing on the core of KA's old programming courses -- JS, HTML, CSS -- and just practical skills from AP/Computers and Internet, and especially Internet Safety.

Also, Internet Safety (since many of its exercises overlap with AP/Computers and Internet) also could have those Code.org videos included. There's some useful How Not To Get Hacked videos that would greatly complement the Khan Academy x Google conversation videos, and Sal Khan's explainer videos and other CS articles and videos.