A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

medium

Seniority

L3

Problem

The market-data team dumps end-of-day OHLCV bars as CSV, one row per ticker per trading day (Date,Ticker,Open,High,Low,Close,Volume). A trader wants a quick volatility snapshot for one symbol: the day it had the widest intraday swing (High minus Low, earliest Date on ties) and its average daily Volume over the dump. Return an empty dict if the symbol never traded.

Summary

Prices move. One stretch had the widest gap.

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