An open-source Python suite called ParaStereoSync and KineViz-3D uses consumer cameras, printed markers, and software-based ...

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.

That's quite intentional. If you are passing the wrong type of value to a function then your code should crash. The code will also crash if I pass a string to a function that expects an integer. Code ...

That is pretty self-explanatory except perhaps for "_", which is a wildcard that will match anything. The idea is that each case will be tried in the order specified, the first to match will be ...