Flask is a micro web framework written in Python. It is classified as a microframework because it does not require particular tools or libraries. Learn how to use it in this crash course tutorial.
Tutorial from Jake Rieger. Check out his YouTube channel: https://www.youtube.com/channel/UC0np-tFaO8GPJuIKZhwnQxg
Learn to code for free and get a developer job: https://www.freecodecamp.org
Read hundreds of articles on programming: https://medium.freecodecamp.org