In this chapter, we caught a glimpse of web development. We talked about important concepts like the DRY philosophy and the concept of a framework as a tool that provides us with many things we need in order to write code to serve requests. We also talked about the MTV pattern, and how nicely these three layers play together to realize a request-response path.

Later on, we briefly introduced regular expressions, which is a subject of paramount importance, and it's the layer which provides the tools for URL routing.

There are many different frameworks out there, and Django is definitely one of the best and most widely used, so it's definitely worth exploring, especially its source code, which is very well written.

There are other very interesting and important frameworks too, like Flask. They provide fewer features but, in general, they are faster, both in execution time and to set up. One that is extremely fast is the relatively young Falcon project, whose benchmarks are outstanding.

It's important to get a solid understanding of how the request-response mechanism works, and how the Web in general works, so that eventually it won't matter too much which framework you have to use. You will be able to pick it up quickly because it will only be a matter of getting familiar with a way of doing something you already know a lot about.

Explore at least three frameworks and try to come up with different use cases to decide which one of them could be the ideal choice. When you are able to make that choice, you will know you have a good enough understanding of them.

The next chapter is about debugging and troubleshooting. We'll learn how to deal with errors and issues so that if you get in trouble when coding (don't worry, normally it only happens about all the time), you will be able to quickly find the solution to your problem and move on.