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

L4

Problem

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.

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