Defining Celery tasks in Flask - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import Celery in a Flask app.

Flask

from celery import [1]

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

ACelery

BTask

Capp

DFlask

Attempts:

3 left

💡 Hint

Common Mistakes

Importing 'Task' instead of 'Celery'.

Trying to import 'Flask' from celery.

You import Celery from the celery package to create tasks.

2fill in blank

medium

Complete the code to create a Celery instance with Flask app's config.

Flask

celery = Celery(__name__, broker=[1])

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

Aconfig['BROKER']

Bapp.broker_url

Capp.config['CELERY_BROKER_URL']

D'redis://localhost:6379/0'

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string literal instead of app config.

Using a wrong config key.

The broker URL is usually stored in Flask app config under CELERY_BROKER_URL.

3fill in blank

hard

Fix the error in defining a Celery task decorator.

Flask

@celery.[1]

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

Atasks

Bexecute

Crun

Dtask

Attempts:

3 left

💡 Hint

Common Mistakes

Using @celery.tasks which does not exist.

Using @celery.run or @celery.execute which are invalid.

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

4fill in blank

hard

Fill both blanks to define a simple Celery task function.

Flask

@celery.[1]
def [2]():
    return 'Hello from Celery!'

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

Atask

Bhello_task

Crun_task

Dexecute

Attempts:

3 left

💡 Hint

Common Mistakes

Using invalid decorator names.

Using function names with spaces or invalid characters.

The decorator is @celery.task and the function name can be hello_task.

5fill in blank

hard

Fill all three blanks to create a Celery task that adds two numbers.

Flask

@celery.[1]
def [2](a, b):
    return a [3] b

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

Atask

Badd_numbers

C+

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using subtraction instead of addition.

Using wrong decorator or function names.

The decorator is @celery.task, the function name add_numbers, and the operator is + to add.