To include the app in our project, we need to add a reference to its configuration class in the
INSTALLED_APPS setting. The
PollsConfig class is in the
polls/apps.pyapps.py file, so its dotted path is
'polls.apps.PollsConfig'. Edit the
mysite/settings.pysettings.py file and add that dotted path to the
INSTALLED_APPS setting. It’ll look like this: