Created an app called polls in the mysite project

python manage.py startapp polls

Projects vs. apps

What’s the difference between a project and an app? An app is a Web
application that does something – e.g., a Weblog system, a database of
public records or a simple poll app. A project is a collection of
configuration and apps for a particular Web site. A project can contain
multiple apps. An app can be in multiple projects.
Created the models Poll and Choice for polls app

Poll and Choice classes subclass models.Model and define class variables
that define the columns in their respective tables in the database.

The class variables are strongly types and are subclasses of Field
class.