You get an error saying AttributeError: 'function' object has no attribute 'delay' when calling my_task.delay(). What is the most likely problem?

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Django - Celery and Background Tasks

You get an error saying AttributeError: 'function' object has no attribute 'delay' when calling my_task.delay(). What is the most likely problem?

AThe task was called with wrong arguments

BThe Celery worker is not running

CThe task function was not decorated with @shared_task or @app.task

DThe Django settings are missing

Step-by-Step Solution

Solution:

Step 1: Understand the error cause
This error means the function is a plain Python function without Celery task methods like delay.
Step 2: Identify missing decorator
Without @shared_task or @app.task, the function is not a Celery task and has no delay method.
Final Answer:
The task function was not decorated with @shared_task or @app.task -> Option C
Quick Check:
Missing decorator = no delay() method [OK]

Quick Trick: Decorate tasks to enable .delay() method [OK]

Common Mistakes:

MISTAKES

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