[Solved] Given this Flask rq task code snippet:from rq import Queue from redis import Redis redis_conn = Redis() queue = Queue(connection=redis_conn) def add(x, y): return x + y job = queue.... | Flask

Flask - Background Tasks

Given this Flask rq task code snippet:

from rq import Queue
from redis import Redis

redis_conn = Redis()
queue = Queue(connection=redis_conn)

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

job = queue.enqueue(add, 3, 4)
print(job.result)

What will be printed immediately after running this code?

ANone

B7

CError: job.result not available

D3 + 4

Step-by-Step Solution

Solution:

Step 1: Understand rq job processing
When a job is enqueued, it runs asynchronously. The result is not ready immediately.
Step 2: Check job.result value right after enqueue
Immediately after enqueue, job.result is None because the worker hasn't processed it yet.
Final Answer:
None -> Option A
Quick Check:
job.result before worker runs = None [OK]

Quick Trick: job.result is None until worker finishes task [OK]

Common Mistakes:

MISTAKES

Assuming job.result is ready immediately
Expecting synchronous return value
Confusing job.result with function return

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More Flask Quizzes

Given this Flask rq task code snippet:

Step 1: Understand rq job processing

Step 2: Check job.result value right after enqueue

Final Answer:

Quick Check:

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