Module 'module' has no attribute 'celery'

Question

I need to use Celery at my project but i got some errors when i try to install at my project. I've read the Celery's doc for Django , but i've been taking the same error.

My tree project :

• 📂 src

  • 📄 __init__.py

  • 📄 celery.py

  • 📂 core

    • 📄 __init__.py

  • 📂 project_auth

    • 📄 __init__.py
    • 📄 serializer.py
    • 📄 tasks.py

  • 📄 settings.py

  • 📄 urls.py

  • 📄 wsgi.py

• 📄 texto.md

src/_ init _.py :

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

__all__ = ('celery_app',)

src/celery.py :

import os

from celery import Celery
from django.conf import settings

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'src.settings')
app = Celery('src')
app.config_from_object('django.conf:settings', namespace='CELERY')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)

@app.task(bind=True)
def debug_task(self):
    print(f'Request: {self.request!r}')

src/settings.py :

INSTALLED_APPS = [
    #Django apps :
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    #Meus apps : 
    'src.core',
    'src.project_auth',
    'src.product',
    #Apps de terceiros :   
    'django_celery_results',
    'rest_framework',
    "rest_framework.authtoken",    
]

CELERY_CONFIG = {
    "CELERY_TASK_SERIALIZER": "json",
    "CELERY_ACCEPT_CONTENT": ["json"],
    "CELERY_RESULT_SERIALIZER": "json",
    "CELERY_RESULT_BACKEND": None,
    "CELERY_TIMEZONE": "UTC",
    "CELERY_ENABLE_UTC": True,
    "CELERY_ENABLE_REMOTE_CONTROL": False,
}

docker-compose.yml:

version: "3.8"

services:
  
  web:    
    build: .
    command: python manage.py runserver 0.0.0.0:8000
    volumes:
      - .:/code
    ports:
      - 8000:8000
    depends_on:
      - db
    tty: true
    container_name: ${COMPOSE_PROJECT_NAME}_app

  db:
    container_name: ${COMPOSE_PROJECT_NAME}_db
    image: postgres:14
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
    volumes:
      - postgres_data:/var/lib/postgresql/data/

  cache:
    container_name: ${COMPOSE_PROJECT_NAME}_celery_broker
    image: rabbitmq:3.9
    ports:
      - 5672:5672
    
volumes:
  postgres_data:

On docker bash i run celery --app src.project_auth and got :

Error: Invalid value for '-A' / '--app': 
Unable to load celery application.
Module 'src.project_auth' has no attribute 'celery'

Thanks for any help !

Answer 1

It looks like your celery.py file is in the wrong location, from the error message you should move celery.py into the project_auth folder.

Module 'src.project_auth' has no attribute 'celery'

This indicates Celery is expecting src/project_auth/celery.py whereas you have src/celery.py

The other option would be to change the bash script to

celery --app src

Good Luck!