Celery KeyError when i try to execute task

Question

In accordance with the 'first steps with Celery' I have the following structure:

Celery_

• config
  • celery.py
  • celeryconfig.py
• tasks
  • tasks.py
• run_tasks.py

celery.py:

from celery import Celery
from config import celeryconfig
app = Celery('tasks', backend='rpc://', broker='pyamqp://')
app.config_from_object(celeryconfig)

celeryconfig.py

broker_url = 'pyamqp://'
result_backend = 'rpc://'
task_serializer = 'json'
result_serializer = 'json'
accept_content = ['json']
timezone = 'Europe/Oslo'
enable_utc = True

task_routes = {
'tasks.add': 'low-priority',
}
task_annotations = {
   'tasks.add': {'rate_limit': '10/m'}
}

tasks.py:

from config.celery import app


@app.task
def add(x, y):
return x + y

run_tasks.py:

from tasks.tasks import add
res = add.delay(4,4)
a = res.get()
print(a)

This is a very simple configuration, but when I run run_tasks.py, the console displays an error:

.... Traceback (most recent last call last): File "/usr/lib/python3/dist-packages/celery/worker/consumer.py", line 456, in on_task_received strategies [name] (message, body, KeyError: 'tasks.tasks.add'

Help me please. What's wrong?

Answer 1

You need to import your tasks in celery.py

from celery import Celery
from config import celeryconfig
app = Celery('tasks.tasks', backend='rpc://', broker='pyamqp://')
app.config_from_object(celeryconfig)
import tasks.tasks