Calling tasks asynchronously in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to call the Celery task asynchronously.

Django

from tasks import send_email

send_email.[1]()

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

Acall

Brun

Cexecute

Ddelay

Attempts:

3 left

💡 Hint

Common Mistakes

Using run() instead of delay() causes the task to run synchronously.

Using call() or execute() are not valid Celery task methods.

In Django with Celery, calling delay() on a task sends it to the queue to run asynchronously.

2fill in blank

medium

Complete the code to import the Celery app instance correctly.

Django

from [1] import app as celery_app

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Amyproject.celery

Bdjango_celery

Ccelery_app

Dtasks

Attempts:

3 left

💡 Hint

Common Mistakes

Importing from 'tasks' instead of the celery app module.

Using a non-existent module like 'django_celery'.

In Django projects, the Celery app is usually defined in myproject/celery.py. Importing it as myproject.celery is the correct way.

3fill in blank

hard

Fix the error in the code to schedule a task with arguments asynchronously.

Django

send_email.[1](user_id=42, subject='Hello')

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

Asend

Bapply_async

Crun

Dexecute

Attempts:

3 left

💡 Hint

Common Mistakes

Using run() runs the task immediately and synchronously.

Using send() or execute() are invalid Celery task methods.

The apply_async() method schedules a task with arguments asynchronously in Celery.

4fill in blank

hard

Fill both blanks to create a periodic task using Celery beat.

Django

from celery.schedules import [1]

app.conf.beat_schedule = {
    'send-report-every-day': {
        'task': 'tasks.send_report',
        'schedule': [2](hours=24),
    },
}

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

Acrontab

Btimedelta

Cinterval

Dperiodic

Attempts:

3 left

💡 Hint

Common Mistakes

Using crontab without proper syntax.

Using periodic which is not a valid import.

To schedule periodic tasks, Celery beat uses interval imported from celery.schedules for repeating intervals, e.g., interval(hours=24).

5fill in blank

hard

Fill all three blanks to retry a failed task after 10 seconds.

Django

@app.task(bind=True, max_retries=3)
def send_notification(self, user_id):
    try:
        # send notification logic
        pass
    except Exception as exc:
        raise self.[1](exc, countdown=[2]) from exc

# Call the task
send_notification.[3](user_id=5)

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

Aretry

B10

Cdelay

Dapply_async

Attempts:

3 left

💡 Hint

Common Mistakes

Using apply_async instead of delay to call the task.

Not using retry method inside the except block.

The retry method retries the task after a delay specified by countdown. The task is called asynchronously with delay().