One of the cool things I got around to doing for my Codebits presentation this year was to finally dust off and publish microflow, my experimental Python implementation of the basic Flow-Based Programming concepts.
This small library was very useful to me during the early stages of my research, when I was first exploring the ideas around Flow-Based Programming, but it never actually worked in the sense that you could build anything but very simple applications with it. So while I was going through the FBP book again while preparing for my Codebits talk I took the chance to finish off the rough edges of the library and update it to use Python 3. I also optimized it for readability, so other could use it as a learning tool or as the basis of other runtimes.
Sure, there are other FBP or FBP-like runtimes written in Python, like Kamaelia or protoflo, which are more robust and better performing, but if you are learning about the basics of Flow-Based Programming, it could be a simple example to start playing with the concepts in a very expressive and readable language.
So, if you have some time have a go at it and let me know what you think. I hope it can be as useful to you as it has been for me.