Concurrency with Python, Twisted, and Flex: "Before wading into the world of Twisted, you should be forewarned. Twisted contains lots of libraries to do all kinds of things, and this abundance can be overwhelming. They use weird naming conventions, often making things up even though there are accepted names for things, so names are often nonsensical. The documentation sucks -- badly. You usually have to thrash around quite a bit to figure out what you need, and even then it requires luck (but the newsgroup tends to be helpful). There is an O'Reilly book on Twisted, but it's not great -- you get it anyway because that's the only book there is.
Normally, caveats like that might send you away from an open-source project. Despite the issues, Twisted is worth it because the code is very good, and it solves your problem. The project is very actively maintained, but it's by people who are good at writing (and testing) code, and not so good at documentation. It's definitely worth using, but you should be ready to roll up your sleeves. However, if you can fit your project within what I'm showing in this article, things should go easily."