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The Trade Log Aggregator
A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.
- Domain
- Python
- Difficulty
- medium
- Seniority
- mid, senior
Problem
The compliance team needs daily trading volume reports broken down by exchange. Given CSV trade log lines (date,process,host,log_message,bytes), extract the exchange name from the process field (the portion before the first underscore) and return two dicts: total bytes per day, and bytes per exchange per day.
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