After reading some comments pinning Flask and Django for "big" projects, I feel compelled to write my own experience. Flask is a micro-framework, but it's not

After reading some comments pinning Flask and Django for "big" projects, I feel compelled to write my own experience. Flask is a micro-framework, but it's not a toy framework (anymore). I've used it professionally for all web related projects big and small for the last 4 years with great success. I wholeheartedly recommend it. It's not for everybody though, as one can attest by various comments lamenting its minimalist approach. Things that attract someone like me who likes a certain degree of control on how my tools are set up and work, may be the same that repulse someone else more concerned with having everything available in the kitchen sink. When I moved to Python for web development Django was the most common recommendation. I had toyed with it a bit previously and considered settling for it. Amid the raves though were a few complains that gave me pause, most coming from experienced Python programmers. A common remark was that as time went and as they evolved with the framework, it wasn't uncommon to swap parts out of it for external libraries. SQLAlchemy, WTForms, Jinja2. In some case basically ending with only the routing module and the admin. Which raised the question of the relevance of using a full-stack framework not necessarily designed with interchangeability in mind, if you end up just using it like a glue mini-framework. Having worked with full-stack frameworks before I identified with the highlighted pain points and Flask became very attractive. I picked it up for a first project and never looked back. It's been over 4 years now. It's entirely possible that I'm missing out by not working with something more like Django, although I doubt it very much. Flask itself is small, made of bits of the Werkzeug WSGI toolkit and the Jinja2 template engine. It's simple in concept, simple to set up, and simple to use, but anyone who's been developing with it for anything more than basic projects (static sites, microblogs, etc) knows that to do more complicated stuff than displaying template pages you will need to add some dependencies (as it should be). You can do it the old-fashion Python way, by simply importing modules and working with them, or you can install an extension. There's currently a great variety of extensions, the official list is here http://flask.pocoo.org/extensions/ http://flask.pocoo.org/extensions/, with lots more available from Github and PyPI. Furthermore it's dead simple to make your own if you're not satisfied with the offering. All of this is probably the reason why 5+ years after its creation you see a good number of guidelines on how to work with it for ambitious web projects.