I have setup flask with apache (wsgi) under a venv running python 3.6 on ubuntu 18.04 lts and imported other modules with success. Including celery with rabbitmq.
I followed this guidance for Celery and Flask https://flask.palletsprojects.com/en/1.1.x/patterns/celery/ and am semi confident celery is called by flask. Because when I run
celery worker -A views.celery
it successfully runs and I can see the workers collecting the tasks from what I guess is the rabbitmq queue. (I'm still getting my head around all this).
When I follow the numerous guides online to use systemd or init.d or even the older supervisord I come in to the same problem, which mirrors this Python - Module Not Found but I have followed it without success.
So to confirm, my error is
ImportError: attempted relative import with no known parent package
and the line in question was from
views.celery
with line
from .static.py.forms import blah
where static is the usual flask directory, and py is a directory where I store a forms. py file.
So because this is using relative importing (So I'm to believe because of the period . ) I remove the period. Flask continues to work. But the new error I receive is
module static.py was not found
Following the guidance from the other stackoverflow question, I added a
Environment=PATH="/var/www/Flask/app/"
in the Unit celeryd file. I also have since added blank __init__. py files in the directories static and py.
Appreciate any assistance!!
I have also used these resources but suspect due to my lack of knowledge I have made an error somewhere.
https://medium.com/@MicroPyramid/celery-with-supervisor-12522ec397ed
https://github.com/celery/celery/blob/3.1/extra/supervisord/celeryd.conf
https://docs.celeryproject.org/en/4.4.2/userguide/daemonizing.html#daemon-systemd-generic
https://www.digitalocean.com/community/tutorials/how-to-use-systemctl-to-manage-systemd-services-and-units
https://stackoverflow.com/questions/21880360/daemonizing-celery
https://www.cyberciti.biz/faq/unix-create-user-account/
https://www.maketecheasier.com/add-remove-user-to-groups-in-ubuntu/
https://stackoverflow.com/questions/16981921/relative-imports-in-python-3
https://napuzba.com/a/import-error-relative-no-parent
