The Trade Log Aggregator
A medium Python mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- Python
- Difficulty
- medium
- Seniority
- L4
Interview Prompt
Given CSV trade log lines (date,process,host,log_message,bytes), extract the exchange name from process (everything before the first underscore). Per (date, exchange), sum bytes. Return a list of dicts {'date', 'exchange', 'total_bytes'} sorted by (date ascending, exchange ascending).
Summary
Every trade left a footprint.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your python solution with real code execution
- Get instant feedback and a hire/no-hire decision