How many days does it take to learn Flask?

If you are a novice, you need to spend more time on understanding HTML and templatization than learning the framework itself. So, learn Flask can take a day or may take as long as a month depending on prior knowledge and dedication.

Flask: Flask is one of the easiest microframework to learn in Python . If you wish to develop a simple and lightweight web application then Flask is suitable for that. It is not as powerful and extensive as Django still provides features such as support for unit testing and building REST APIs.

If you are a Python beginner: use Flask . If you want to learn more about the inner workings of your application and want the freedom and flexibility to program it in whatever way you see fit: use Flask. If you want a lightweight application such as a REST API or an Internet of Things application: use Flask.