Not disagreeing with you here, but is it the case that (most) people build on Django expecting it to scale very well later on? I've not built any Django apps that have seen the light of day, but I've always had the impression that once you have something up and running and are now, hopefully, getting some revenue that transitioning to something more scalable would be much less painful. Reason being, the vision was clarified under Django through a number of (hopefully) quick tweaks here and there.
Or does your experience say otherwise? If one were to build something that would need to be immediately scalable, don't even think of Django and head towards something like Pyramid and Flask?
No! Django scales well and scalability is not a very good reason to switch away from Django. Plenty of high volume sites are powered by it, most famously Disqus.
Or does your experience say otherwise? If one were to build something that would need to be immediately scalable, don't even think of Django and head towards something like Pyramid and Flask?