Calling tasks asynchronously in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Celery class for asynchronous tasks.

Flask

from celery import [1]

Drag options to blanks, or click blank then click option'

Aapp

BTask

CAsyncResult

DCelery

Attempts:

3 left

💡 Hint

Common Mistakes

Importing 'Task' instead of 'Celery'.

Using 'app' which is not a class to import.

Confusing 'AsyncResult' with the Celery class.

You need to import Celery to create a Celery app for asynchronous tasks.

2fill in blank

medium

Complete the code to create a Celery app with the name 'myapp'.

Flask

celery_app = [1]('myapp')

Drag options to blanks, or click blank then click option'

ACelery

BTask

CAsyncResult

DFlask

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Task' which is for defining tasks, not creating the app.

Using 'Flask' which is unrelated to Celery app creation.

Using 'AsyncResult' which is for checking task status.

Use the Celery class to create a Celery app instance.

3fill in blank

hard

Fix the error in the task decorator to define an asynchronous task.

Flask

@celery_app.[1]

Drag options to blanks, or click blank then click option'

Arun

Bexecute

Ctask

Dasync

Attempts:

3 left

💡 Hint

Common Mistakes

Using '@celery_app.run' which does not exist.

Using '@celery_app.async' which is a reserved keyword.

Using '@celery_app.execute' which is not a decorator.

The correct decorator to define a Celery task is @celery_app.task.

4fill in blank

hard

Fill both blanks to call the asynchronous task named 'add' with arguments 4 and 6.

Flask

result = add.[1]([2], 6)

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Adelay

Bapply_async

C4

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'apply_async' without correct argument format.

Passing 5 instead of 4 as the first argument.

Calling the task directly without delay or apply_async.

Use delay to call the task asynchronously and pass the first argument as 4.

5fill in blank

hard

Fill all three blanks to check if the asynchronous task result is ready and get the result.

Flask

if result.[1]():
    value = result.[2]()
else:
    value = [3]

Drag options to blanks, or click blank then click option'

Aready

Bget

CNone

Dstatus

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'status' instead of 'ready' to check completion.

Using 'ready' instead of 'get' to retrieve the result.

Assigning a wrong default value instead of None.

Use ready() to check if the task finished, get() to get the result, and None if not ready.