Off late I've been having a lot of debate with my friend about using Flask over Django for prototyping some feature. I side with Flask, since the development time is much lesser than Django and doesn't need to follow a lot of rules.

Issue here is, I prefer flask and he prefers Django.

Need opinion on this sort of problem, where a prototype for a feature in a product has to be built. It maybe integrated into the end product, which is in Django, or may not be.