Django INSTALLED_APPS

INSTALLED_APPS
INSTALLED_APP is a list of strings that appoint/choose all the applications enabled in Django installation used to configure applications.

When we create an application using the command line
$ django-admin startapp nameofapp
Then the name of that app must be included in INSTALLED_APPS to include that application in our project else the application where we write our code will not run.

NOTE
The application name must be unique. There is no way of including the same application twice.
The application label - by default the final part of the name -- must be unique. "The label allows relabeling an application when two applications have conflicting labels. It should be a valid Python identifier."
