I used Flask a few years ago to write a rather large api server (20k lines) for a video sharing app. I learned that they give you a lot of control but it can ge

I used Flask a few years ago to write a rather large api server (20k lines) for a video sharing app. I learned that they give you a lot of control but it can get messy quickly if you're not careful about properly architecting first. I ended up getting the Flask Cookbook from O'reilly which helped me understand how to structure a Flask App. I also recommend Flask-SQLAlchemy as it made writing and manipulating MySQL queries really straightforward.