Introduction

Flask offers several ways of designing and laying out the URL routing for our applications. Also, it gives us the flexibility to keep the architecture of our views as simple as just functions to a more complex but extensible class-based layout (which can be inherited and modified as needed). In earlier versions, Flask just had function-based views. However, later, in version 0.7, inspired by Django, Flask introduced the concept of pluggable views, which allows us to have classes and then write methods in these classes. This also makes the process of building a RESTful API pretty simple. Also, we can always go a level deeper into Werkzeug and use the more flexible but slightly more complex concept of URL maps. In fact, large applications and frameworks prefer using URL maps.