[embed]https://www.youtube.com/watch?v=Er5K_nR5lDQ&feature=youtu.be&t=17m25s[/embed] A friend pointed me to this talk by Brandon Rhodes on python design patterns from PyOhio a couple of years ago. The talk asks an interesting question: why aren't design patterns seen and talked about in the Python community. He walks through the patterns in Design Patterns: Elements of Reusable Object-Oriented Software one by one, and points out some that are features of the language, some that are used in the standard library, and some that are really applicable. All with some nice small code examples. The thing that got me thinking though was a comment he makes both at the beginning and end of the talk. The reason you don't see these patterns in Python is because Python developers tend not to write the kind of software where they are needed. They focus on small tools that connect other components, or live within a framework. I'm a newcomer to the community, been doing Python full time for only a few years on OpenStack. So I can't be sure whether or not it's true. However, I know there are times when I'm surprised by things that I would have expected to be solved already in the language, or incompatibilities that didn't need to be there in the python 2 to 3 transition, and wonder if these come from this community not having a ton of experience with software at large code base size, as well as long duration code bases, and the kinds of deprecation and upgrade guarantees needed there.