manage.py

#!/usr/bin/env python
import sys

if __name__ == "__main__":
    try:
        from django.conf import settings
        from django.core.management import execute_from_command_line
    except ImportError as exc:
        raise ImportError(
            "Couldn't import Django. Are you sure it's installed and "
            "available on your PYTHONPATH environment variable? Did you "
            "forget to activate a virtual environment?"
        ) from exc
    settings.configure(
        DEBUG=True,
        INSTALLED_APPS=[
            "django.contrib.auth",
            "django.contrib.contenttypes",
            "demo",
        ],
        DATABASES={
            "default": {
                "ENGINE": "django.db.backends.sqlite3",
                "NAME": "test.db",
            }
        },
    )
    execute_from_command_line(sys.argv)