It's definitely production ready. We are using it everywhere in Close.io (http://close.io/ http://close.io/) If you're building a complex web app with it, just

It's definitely production ready. We are using it everywhere in Close.io (http://close.io/ http://close.io/) If you're building a complex web app with it, just be sure to checkout all the Flask extensions so you don't have to reinvent the wheel too much.