Exam 350-901 topic 1 question 120 discussion

I believe this exam assumes you have Python basics down pat. If that is not the case, then you can probably find plenty of free Python courses out there that cover the basics. (freecodecamp or similar sites) Questions like this would be significantly easier, afterwards.

Answer: 1. 429 2. RETRIES 3. backoff 4. backoff 5. i Rationale: 1. if it's not a 429, we know we're not rate-limited [the question prompt is about failing when too many users attempt it at the same time]. so if it's not a 429, we're OK [not always true, but for purposes of this code we are] 2. if we hit the RETRIES number, we should give the response 3. backoff goes here, as we'd sleep for the backoff time period 4. backoff goes here, so we have an exponential backoff [doubles each interval] 5. i goes here, and i is incremented by 1 each run through you asked about i = 0 is is being used as a counter. we increment i each run through the code, until it hits 6, which is our RETRIES value. thus, you can say if i = RETRIES, then you want to exit the loop. if you're wondering where i would be incremented, you see the i += 1, at the bottom of the code. Hope this explanation makes sense. Sample code to illustrate why i = 0 in the code. i = 0 while True: print(i) i += 1 if i == 10: # Replace 10 with your desired upper limit break