Flask is a Python web development framework based on the Werkzeug, Jinja, MarkupSafe and itsdangerous pallets libraries. It was originally created in 2010 and has since powered some of the largest websites on the internet.

Flask is Fun

from flask import Flask
app = Flask(__name__)

def hello():
    return "Hello World!"

if __name__ == "__main__":

And Easy to Setup

$ pip install Flask
$ python hello.py
 * Running on http://localhost:5000/

Ready for production? Read this first.