What is Flask ?

Flask is a micro-framework used for developing web applications in Python, making use of the Werkzeug WSGI toolkit and Jinja2 template engine.

It was created in 2004 as April Fool's joke by Armin Ronacher.

Why Flask ?

It is one of the best framework when you just need basic functionalities, and want to create small web-apps. Unlike many other frameworks, Flask provides you with complete control over your application.

For example, if you want to use a NoSQL database, you can do so, or you can use your relational database or no database at all. Flask supports it all.

Prerequisites

To start with Flask you need the following:

• Basic concepts of Python
• HTML to design a basic structure of your web application.
• CSS for styling and JavaScript for some interactive features.

Don't worry, at this point you just need basic knowledge of JavaScript.