Can't start worker, No module named 'celery

Question

I try to include tasks in my webapplication but i can't start the celery work.

My project structure is the following:

website/website --> init.py, settings.py, urls.py, wsgi.py

website/index --> init.py, celery_app.py, tasks.py

Index is my startpage where i want to run the tasks.

index/celery_app.py has the following code:

from __future__ import absolute_import, unicode_literals
from celery import Celery

app = Celery('index',
         broker='amqp://localhost//',
         backend='amqp://',
         include=['index.tasks'])

 # Optional configuration, see the application user guide.
 app.conf.update(
    result_expires=3600,
   )

if __name__ == '__main__':
app.start()

index/tasks.py :

from __future__ import  absolute_import
from .celery_app import app

@app.task
def test_func():
    print("Test Background Task")

When i want to start the worker with celery -A index worker --loglevel=info I get the following error: ModuleNotFoundError: No module named 'celery'. I run the commandprompt in the index folder.

The other solutions in similar questions didn't help me.

Screenshot of my Packages:

Answer 1

There is a problem with your file structure. Your celery app should be on the same folder as settings.py

website/website --> init.py, settings.py, urls.py, wsgi.py, celery_app.py

website/index --> init.py, tasks.py

and also in the init.py in the website folder should be having

from __future__ import absolute_import, unicode_literals

# This will make sure the app is always imported when
# Django starts so that shared_task will use this app.
from .celery_app import app as celery_app

__all__ = ['celery_app']

Answer 2

only write

    app = Celery(
    "SARyS",
    broker='pyamqp://guest:guest@rabbitmq.insertmendoza.com.ar',
    include=["SARyS.Apps.TaskManager.Tasks"]
)

Answer 3

To install Celery

pip install -U Celery

or

pip install celery

To import Celery Library in Python

from celery import Celery

To Test if it works properly

app = Celery('tasks', broker='pyamqp://guest@localhost//')

@app.task

def add(x, y):
    return x + y

I hope it helps.

Answer 4

I found the solution. The problem was the commandprompt. I couldn't use the "normal" commandprompt. Instead of the normal i opened the commandprompt of my conda environment and now it works.

For everyone who wants to know where you can find the prompt/termin:

Open Anaconda Navigator --> Environments -->Select your Environment --> Click on the Arrow --> Open Terminal and then navigate with cd (if you use windows) to the location you want.