Issue importing modules with Django, but runs fine when I run it independently using '-m' flag

Question

Currently I have a python project with the following directory structure.

I can run the demo.py file directly fine (without importing it in my Django project) from the outermost directory shown above using the following command:

python -m ObjectSegmentation.segmentation_api.apps.tools.demo

However, in my Django project, I need to import the demo.py file in my django views.py file, but when I do so, I get the following error:

    from ObjectSegmentation.segmentation_api.apps.tools.test import *
ModuleNotFoundError: No module named 'ObjectSegmentation'

These are the first few lines from demo.py (including line 4) where the error occurs.

My installed apps in settings.py for the whole project look like this:

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'apps.tools.demo',
    'rest_framework'
]

How can I make it so that the imports work with both the project run independently and imported in my django project?