You don’t want to try to do this from within your Django project.
Create an external process for this, and run it outside the context of your Django environment.
Celery is one way to handle it. You could also run this using cron or as a systemd service, or using another process manager such as supervisord or runit.
See the thread at Start another process with Django (along with others that you could find) for some other details and more information about this.