Creating the project's main app

In this section, we are going to create our first Django app. One Django project can contain multiple apps. Splitting the project into apps is a good practice for many reasons; the most obvious is that you can reuse the same app across different projects. Another reason to split the project into multiple apps is that it enforces separation of concerns. Your project will be more organized, easier to reason, and our colleagues will thank you because it will be much easier to maintain.

Let's go ahead and run the command startapp, and, as shown before, you can either use the django-admin command or use manager.py. As we created the project using the django-admin command, it is a good opportunity to test the manager.py command. To create a new Django app, run the following command:

python manager.py startapp main

Here, we are going to create an app named main. Don't worry that no output is displayed, Django creates the project and the app silently. If you get a list...