Refer to the exhibit. This snippet of a script has recently started exiting abnormally with an exception stating "Unexpected HTTP Response code: 429".
response = requests.get(url)
if response.status_code != 200:
error_message = "Unexpected HTTP Response code: {}".format(response.status_code)
raise Exception(error_message)
data = response.json()

Which solution handles rate limiting by the remote API?

Question

Refer to the exhibit. This snippet of a script has recently started exiting abnormally with an exception stating "Unexpected HTTP Response code: 429".
response = requests.get(url)
if response.status_code != 200:
 error_message = "Unexpected HTTP Response code: {}".format(response.status_code)
 raise Exception(error_message)
data = response.json()

Which solution handles rate limiting by the remote API?

Accepted Answer

D. response = requests.get(url)
if response.status_code == 429:
 backoff_seconds = int(response.headers['Retry-After'])
 sleep(backoff_seconds)
 response = requests.get(url)
elif response.status_code != 200:
 error_message = "Unexpected HTTP Response code: {}".format(response.status_code)
 raise Exception(error_message)
data = response.json() This solution correctly identifies an HTTP 429 status code, pauses execution for the duration specified in the 'Retry-After' header, and then re-attempts the 'requests.get(url)' call to retrieve the data. This implements an effective rate-limiting retry mechanism, allowing the script to eventually succeed after waiting.

Answer

A. response = requests.get(url)
if response.status_code == 429:
 backoff_seconds = int(response.headers['Retry-After'])
 sleep(backoff_seconds)
elif response.status_code != 200:
 error_message = "Unexpected HTTP Response code: {}".format(response.status_code)
 raise Exception(error_message)
data = response.json() This option sleeps after receiving a 429 but does not re-issue the 'requests.get(url)' call, meaning 'data = response.json()' would still attempt to parse the original 429 error response.

Answer

B. response = requests.get(url)
if response.status_code != 200 and response.status_code != 429:
 error_message = "Unexpected HTTP Response code: {}".format(response.status_code)
 raise Exception(error_message)
data = response.json() This option modifies the exception condition to ignore 429 errors but does not implement any backoff or retry logic, leading to the 'data = response.json()' call failing or processing an empty/error response.

Answer

C. response = requests.get(url)
if response.status_code != 200 and response.status_code != 429:
 backoff_seconds = int(response.headers['Retry-After'])
 sleep(backoff_seconds)
 error_message = "Unexpected HTTP Response code: {}".format(response.status_code)
 raise Exception(error_message)
data = response.json() This option incorrectly applies the sleep logic only if the status code is neither 200 nor 429, and then still raises an exception without retrying the request.

Refer to the exhibit. This snippet of a script has recently started exiting abnormally with an exception stating "Unexpected HTTP Response code: 429". response = requests.get(url) if…

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