Retry-After header in Rest API - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to set the Retry-After header with a delay of 120 seconds.

Rest API

response.headers['Retry-After'] = '[1]'

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

ANone

B'120'

C'120 seconds'

DTrue

Attempts:

3 left

💡 Hint

Common Mistakes

Using a boolean value instead of a number

Including units like 'seconds' in the value

The Retry-After header expects a number of seconds as a string or an HTTP date. Here, 120 seconds is correct.

2fill in blank

medium

Complete the code to set the Retry-After header with a HTTP date string.

Rest API

response.headers['Retry-After'] = '[1]'

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

A2025-10-21T07:28:00Z

B21/10/2025 07:28:00

C"Wed, 21 Oct 2025 07:28:00 GMT"

D07:28:00 GMT

Attempts:

3 left

💡 Hint

Common Mistakes

Using ISO 8601 date format

Using incomplete date strings

The Retry-After header accepts HTTP-date format like "Wed, 21 Oct 2025 07:28:00 GMT".

3fill in blank

hard

Fix the error in setting the Retry-After header with a numeric value.

Rest API

response.headers['Retry-After'] = [1]

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

ATrue

B120

CNone

D'120'

Attempts:

3 left

💡 Hint

Common Mistakes

Assigning an integer directly instead of a string

Using None or boolean values

The Retry-After header value must be a string, so the number 120 should be quoted as '120'.

4fill in blank

hard

Fill both blanks to set Retry-After header with seconds and check if status code is 429.

Rest API

if response.status_code [1] 429:
    response.headers['Retry-After'] = '[2]'

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

A==

B!=

C120

D60

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '=='

Setting Retry-After to wrong value

We check if status code equals 429, then set Retry-After to 120 seconds.

5fill in blank

hard

Fill all three blanks to create a dictionary with Retry-After header set only if status is 503 and delay is over 30 seconds.

Rest API

headers = {}
if status_code [1] 503 and delay [2] 30:
    headers['Retry-After'] = '[3]'

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

A==

B>

C30

D60

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operators

Setting Retry-After to incorrect value

Check if status_code equals 503 and delay is greater than 30, then set Retry-After to 60 seconds.