Introduction to Flask by examples. Flask is is a microframework for Python based on Werkzeug, Jinja 2 and good intentions.

Introduction to Flask-RESTful and Flask-HTTPAuth by examples. Flask-RESTful is an extension for Flask that adds support for quickly building REST APIs. It is a lightweight abstraction that works with your existing ORM/libraries. Flask-HTTPAuth is a simple extension that simplifies the use of HTTP authentication with Flask routes.

Introduction to Flask SQLAlchemy by examples. Flask-SQLAlchemy is an extension for Flask that adds support for SQLAlchemy to your application. It requires SQLAlchemy 0.8 or higher. It aims to simplify using SQLAlchemy with Flask by providing useful defaults and extra helpers that make it easier to accomplish common tasks.