Four Sequential Network Calls with Coroutines | Dataford Interview Questions

You need to make four network calls sequentially. How would you do it with coroutines? Give an alternative to a single-threaded/sequential dispatcher.

Asked in the Round 3: Management (Sr Director Eng) stage. The candidate proposed a sequential single-threaded dispatcher, and the interviewer pushed for an alternative.

For grading, implement make_calls_sequentially(calls). calls contains exactly four dictionaries with numeric delay and arbitrary value fields. Return the values in input order after awaiting each simulated call. Use Python coroutines and standard-library code only.

Constraints

calls contains exactly four dictionaries
Each dictionary contains a non-negative numeric delay and a value field
Values may be strings, numbers, booleans, or null
Return values in the same order as calls

Function Signature

def make_calls_sequentially(calls):

Whenever you're ready, walk me through your approach or go straight to the code. The requirements are in the Question tab.

Problem

You need to make four network calls sequentially. How would you do it with coroutines? Give an alternative to a single-threaded/sequential dispatcher.

Asked in the Round 3: Management (Sr Director Eng) stage. The candidate proposed a sequential single-threaded dispatcher, and the interviewer pushed for an alternative.

Constraints

calls contains exactly four dictionaries
Each dictionary contains a non-negative numeric delay and a value field
Values may be strings, numbers, booleans, or null
Return values in the same order as calls

Function Signature

def make_calls_sequentially(calls):

Whenever you're ready, walk me through your approach or go straight to the code. The requirements are in the Question tab.