If you’ve decided to use Python for developing your next project, you will have to choose between one of the two frameworks – Django and Flask. These two aren’t competitors but they actually serve two completely independent target audiences.
When to use Django
Django is a very big, granular framework “with batteries includes”. Here, you already have everything you might need throughout your long journey to turn your web app into the next big thing. The admin panel, ORM and much more awaits your use, and it all comes straight out of the box!
It’s best suited for larger enterprise-level sites where the growth trajectory is expected to bring exponential increases in numbers of users and more functionalities to come in the future.
When to use Flask
Flask is for smaller SPAs which have static content and which don’t have big growth expectations. It gives you a lot of freedom to make technological choices, but, at the same time, you can always hook up all those libraries and add-ons, transforming it into a fully-fledged framework.