[Solved] Given this Flask and Celery setup, what will be the output when calling add.delay(4, 5)?... Given this Flask and Celery setup, what will be the output when calling add.delay(4, 5)? | Flask

Flask - Background Tasks

Given this Flask and Celery setup, what will be the output when calling add.delay(4, 5)?

from celery import Celery
celery = Celery(__name__, broker='redis://localhost:6379/0')
@celery.task
def add(x, y):
    return x + y
result = add.delay(4, 5)
print(type(result))

A9

B<class 'celery.result.AsyncResult'>

C<class 'int'>

DNone

Step-by-Step Solution

Solution:

Step 1: Understand what delay() returns
The delay() method sends the task asynchronously and returns an AsyncResult object immediately.
Step 2: Identify the printed type
Printing type(result) shows the AsyncResult class, not the task result value.
Final Answer:
<class 'celery.result.AsyncResult'> -> Option B
Quick Check:
delay() returns AsyncResult, not direct result [OK]

Quick Trick: delay() returns AsyncResult object, not task output [OK]

Common Mistakes:

MISTAKES

Expecting immediate task result
Confusing AsyncResult with int
Assuming print shows task return value

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More Flask Quizzes

Given this Flask and Celery setup, what will be the output when calling add.delay(4, 5)?

Step 1: Understand what delay() returns

Step 2: Identify the printed type

Final Answer:

Quick Check:

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