/usr/lib/python3/dist-packages/celery/app/ is in python3-celery 3.1.20-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/python3/dist-packages/celery/app/__init__.py
/usr/lib/python3/dist-packages/celery/app/amqp.py
/usr/lib/python3/dist-packages/celery/app/annotations.py
/usr/lib/python3/dist-packages/celery/app/base.py
/usr/lib/python3/dist-packages/celery/app/builtins.py
/usr/lib/python3/dist-packages/celery/app/control.py
/usr/lib/python3/dist-packages/celery/app/defaults.py
/usr/lib/python3/dist-packages/celery/app/log.py
/usr/lib/python3/dist-packages/celery/app/registry.py
/usr/lib/python3/dist-packages/celery/app/routes.py
/usr/lib/python3/dist-packages/celery/app/task.py
/usr/lib/python3/dist-packages/celery/app/trace.py
/usr/lib/python3/dist-packages/celery/app/utils.py
/usr/lib/python3/dist-packages/celery/apps/__init__.py
/usr/lib/python3/dist-packages/celery/apps/beat.py
/usr/lib/python3/dist-packages/celery/apps/worker.py