I've been using Django for about ~2 years. I haven't found it to be too rigid at all. And for the few situations where I've really needed to implement something

I've been using Django for about ~2 years. I haven't found it to be too rigid at all. And for the few situations where I've really needed to implement something novel, I've found working with Django to be an absolute pleasure. There's hooks to easily extend things in all of the right places. Django's source as a whole is very well written and documented.