How to integrate celery with Django, when settings needs to be injected in?

Question

I am working on a new project where every developer has his own settings file.

In order to run Django I have to load it like this:

python manage.py runserver --settings="databank_web.settings.dqs.dev_houman"

I have now to integrate Celery 3.1 into the project and this approach is causing me a lot of headache.

I have followed all the steps to integrate the Celery into Django as described here.

I can run Django as usual, but now I have to run celery with my custom Django environment as described in this solution.

DJANGO_SETTINGS_MODULE='databank_web.settings.dqs.dev_houman' celery -A databank_web worker -l info

This seems to get a step further, but I get this error message:

File "/Users/houman/git/venv/lib/python2.7/site-packages/django/contrib/admin/sites.py", line 3, in <module>
from django.contrib.admin import ModelAdmin, actions
ImportError: cannot import name actions

I did some research and followed this solution in order to narrow it down:

import os
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "databank_web.settings.dqs.dev_houman")
from django.contrib.admin import ModelAdmin, actions

This was meant to clarify which error is throwing, however it seems to work just fine. So I am clueless why this is failing within Django environment.

So why am I getting those ImportError: cannot import name actions errors?

Much appreciated

Since every developer has her own settings file it is likely that you have something wrong in it. Try executing this in a Python shell to track down the real error. — dukebody
– dukebody, Commented Oct 26, 2014 at 9:49

Vince Prignano · Accepted Answer · 2014-10-27 20:57:02Z

0

It sounds more like a circular dependency.

If you followed the guide, you should have created a new file called celery.py.

In celery.py

from __future__ import absolute_import

import os

from celery import Celery

from django.conf import settings

# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'proj.settings')

app = Celery('proj')

app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)

Comment out os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'proj.settings') because this is trying to overwrite whatever you pass outside the scope.

Then, set the DJANGO_SETTINGS_MODULE variable outside the file.

answered Oct 27, 2014 at 20:57

Vince Prignano

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