The url for the admin page is http://127.0.0.1:8000/admin/
Superuser username: Krishna
password: admin
The url to display the rest-framework page is http://127.0.0.1:8000/halls/
For running the code through terminal run command python manage.py runserver
I have used the words unoccupied for hall which is not booked and occupied for the halls which are booked.
For getting the data for which all halls are unoccupied run the following commands in the terminal after opening the code in vscode:
python manage.py shell
from Records.models import halls
halls.objects.filter(Occupancy_status="Unoccupied")