Sometimes it's easier to assume Python-developers are blind to architectural problems and common solutions to those.
Not saying Python isn't used in large, complex problems or that all Python-code is spaghettti-code, but there are a lot of wannabe cool Python-hackers ("ninjas") out there and part of being "cool" in that sense is disregarding everything which looks even slightly like design patterns.
In those circles "Design patterns" means enterprisey, verbose code with FactoryFactories and not guidelines for how to structure your code to solve problems which have been solved before you.