Where the Numbers Settle
An easy Python mock interview question on DataDriven, with an AI interviewer who asks follow-up questions and a hire or no-hire decision at the end.
- Domain
- Python
- Difficulty
- easy
- Seniority
- L5
Interview Prompt
Our sensor dashboard needs a `StreamAverager` where `add(key, value)` records one reading and `get_averages()` reports each sensor's mean of its readings so far. `run_stream_averager(operations)` replays a list of `['add', key, value]` and `['get_averages']` entries on one averager and returns one result per operation.
Summary
The answer moves with the data.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write and run your Python against test cases
- Answer the interviewer's follow-up questions, then get a hire or no-hire decision