Starting Celery: AttributeError: 'module' object has no attribute 'celery'

Question

I try to start a Celery worker server from a command line:

celery -A tasks worker --loglevel=info

The code in tasks.py:

import os
os.environ[ 'DJANGO_SETTINGS_MODULE' ] = "proj.settings"

from celery import task

@task()
def add_photos_task( lad_id ):
...

I get the next error:

Traceback (most recent call last):
  File "/usr/local/bin/celery", line 8, in <module>
    load_entry_point('celery==3.0.12', 'console_scripts', 'celery')()
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/__main__.py", line 14, in main
    main()
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/celery.py", line 946, in main
    cmd.execute_from_commandline(argv)
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/celery.py", line 890, in execute_from_commandline
    super(CeleryCommand, self).execute_from_commandline(argv)))
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/base.py", line 177, in execute_from_commandline
    argv = self.setup_app_from_commandline(argv)
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/base.py", line 295, in setup_app_from_commandline
    self.app = self.find_app(app)
  File "/usr/local/lib/python2.7/site-packages/celery-3.0.12-py2.7.egg/celery/bin/base.py", line 313, in find_app
    return sym.celery
AttributeError: 'module' object has no attribute 'celery'

Does anybody know why the 'celery' attribute cannot be found? Thank you for help.

The operating system is Linux Debian 5.

Edit. May be the clue. Could anyone explain me the next comment to a function (why we must be sure that it finds modules in the current directory)?

# from celery/utils/imports.py
def import_from_cwd(module, imp=None, package=None):
    """Import module, but make sure it finds modules
    located in the current directory.

    Modules located in the current directory has
    precedence over modules located in `sys.path`.
    """
    if imp is None:
        imp = importlib.import_module
    with cwd_in_path():
        return imp(module, package=package)

@patrys Both the packages 'celery' and 'django-celery' are installed. Do I understand your question? — sergzach
– sergzach, Commented Nov 26, 2012 at 8:06
If you have Django bindings installed, why not use $ ./manage.py celeryd instead? — patrys
– patrys, Commented Nov 26, 2012 at 11:22
@patrys It's convenient to check the functionality from a command line (while I'm setting up a server). I want to see some output in a console window. — sergzach
– sergzach, Commented Nov 26, 2012 at 11:45

sergzach · Accepted Answer · 2012-11-26 16:36:41Z

33

I forgot to create a celery object in tasks.py:

from celery import Celery
from celery import task  

celery = Celery('tasks', broker='amqp://guest@localhost//') #!

import os

os.environ[ 'DJANGO_SETTINGS_MODULE' ] = "proj.settings"

@task()
def add_photos_task( lad_id ):
...

After that we could normally start tasks:

celery -A tasks worker --loglevel=info

answered Nov 26, 2012 at 16:36

sergzach

6,8047 gold badges52 silver badges88 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

kellanburket · Accepted Answer · 2017-07-07 19:02:06Z

26

For anyone who is getting the same error message for an apparently different reason, note that if any of the imports in your initialization file fail, your app will raise this totally ambiguous AttributeError rather than the exception that initially caused it.

answered Jul 7, 2017 at 19:02

kellanburket

13k3 gold badges53 silver badges76 bronze badges

2 Comments

Terri Simon Over a year ago

Thanks for the clue. I get this when I've accidentally got imports that become circular, so that is something to watch for.

Shil Nevado Over a year ago

thank you! I was using an undeclared variable inside if __name__ == '__main__': because I missspelled it. I was getting crazy looking at my project directories because the problem was not there! neither in celeryconfig!

user · Accepted Answer · 2013-09-13 13:23:35Z

13

Celery uses celery file for storing configuration of your app, you can't just give a python file with tasks and start celery. You should define celery file ( for Celery>3.0; previously it was celeryconfig.py)..

celeryd --app app.celery -l info

This example how to start celery with config file at app/celery.py

Here is example of celery file: https://github.com/Kami/libcloud-sandbox/blob/master/celeryconfig.py

edited Sep 13, 2013 at 13:23

user

5,4417 gold badges54 silver badges66 bronze badges

answered Nov 26, 2012 at 16:01

Rustem

2,9321 gold badge19 silver badges32 bronze badges

4 Comments

sergzach Over a year ago

Thank you. But I do this on Windows, it works normally. I have not a special configuration file. Do I understand the Celery docs correctly (could you take a look please?): docs.celeryproject.org/en/latest/getting-started/…

Rustem Over a year ago

Where you store you broker settings and etc.

sergzach Over a year ago

Yes, if you change it according to my.

kanitw Over a year ago

What did you actually forgot to do? I have similar problem (see stackoverflow.com/questions/17007101/…)

Philip · Accepted Answer · 2018-08-21 13:45:09Z

3

My problem was that I put the celery variable inside a main function:

if __name__ == '__main__':  # Remove this row
    app = Flask(__name__)
    celery = make_celery(app)

when it should be put outside.

answered Aug 21, 2018 at 13:45

Philip

3,4742 gold badges32 silver badges44 bronze badges

Comments

Chuma Umenze · Accepted Answer · 2018-09-26 10:23:44Z

2

When you run celery -A tasks worker --loglevel=info, your celery app should be exposed in the module tasks. It shouldn't be wrapped in a function or an if statements that.

If you make_celery in another file, you should import the celery app in to your the file you are passing to celery.

answered Sep 26, 2018 at 10:23

Chuma Umenze

1,08613 silver badges19 bronze badges

Comments

Evgenii · Accepted Answer · 2013-05-24 07:47:01Z

1

Try start celery:

celeryd --config=my_app.my_config --loglevel=INFO --purge -Q my_queue

There is next script in my tasks.py:

@task(name="my_queue", routing_key="my_queue")
def add_photos_task( lad_id ):

There is next script in my_config.py:

CELERY_IMPORTS = \
(
    "my_app.tasks",
)
CELERY_ROUTES = \
{
    "my_queue":
    {
        "queue": "my_queue"
    },
}
CELERY_QUEUES = \
{
    "my_queue":
    {
        "exchange": "my_app",
        "exchange_type": "direct",
        "binding_key": "my_queue"
    },
}
celery = Celery(broker='amqp://guest@localhost//')

answered May 24, 2013 at 7:47

Evgenii

3,4763 gold badges31 silver badges35 bronze badges

Collectives™ on Stack Overflow

Starting Celery: AttributeError: 'module' object has no attribute 'celery'

6 Answers 6

Comments

2 Comments

4 Comments

Comments

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

6 Answers 6

Comments

2 Comments

4 Comments

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related