Kivy is very cool. It allows you to make graphical user interfaces for computers, tablets and smart phones ... in Python. Which is great for people like me. And you, I'm sure. And it's open source, of course.
Today was my first foray into programming using Kivy. Here was my first 'app'. It's not very sophisticated, but I find Kivy's documentation rather impenetrable and frustratingly lacking in examples. Therefore I hope more people like me post their code and projects on blogs.
Right, it detects and displays your webcam on the screen, draws a little button in the bottom. When you press that button it takes a screengrab and writes it to an image file. Voila! Maximise the window before you take a screen shot for best effects.