Dead Simple Observables, for Python.

This is a toy implementation of some of the core Reactive Programming concepts, especially as described in the vry excellent "The introduction to Reactive Programming you've been missing".

The purpose isn't for you to actually use this library. If you want reactive programming tools in python, you can use something written by people who actually grok reactive programming, such as RxPy.

The purpose is to show that the basic concepts behind reactive programming are really simple. Assuming I understand them correctly.