Python, for all its power and popularity, has long lacked a form of flow control found in other languages—a way to take a value and match it elegantly against one of a number of possible conditions.

In this tutorial, I simulate bouncing balls inside a circle using Python and physics principles! Watch as I demonstrate how to apply collision detection, gravity, and movement in a circular space.

Learn how to code with the best Python courses available, helping you unlock new job opportunities with the in-demand skill. Shelby Brown (she/her/hers) is an editor for CNET's services team. She ...