Log Processing Memory-Efficient Function | Dataford Interview Questions

Write a function to optimize a log processing task for memory efficiency. Implement process_logs(log_lines) using a single pass over an iterable of log strings. Each line begins with one level, INFO, WARNING, ERROR, or DEBUG, followed by a space and message; return counts for all four levels. For example, ["INFO Started", "ERROR Failed"] returns { "INFO": 1, "WARNING": 0, "ERROR": 1, "DEBUG": 0 }, while an empty iterable returns zero counts.

Constraints

0 <= len(log_lines) <= 10^6
Each log line is a non-empty string beginning with INFO, WARNING, ERROR, or DEBUG
Each line contains a space after its level
The input may be any iterable, including a generator

Function Signature

def process_logs(log_lines):

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Problem

Constraints

0 <= len(log_lines) <= 10^6
Each log line is a non-empty string beginning with INFO, WARNING, ERROR, or DEBUG
Each line contains a space after its level
The input may be any iterable, including a generator

Function Signature

def process_logs(log_lines):

Your question is Log Processing Memory-Efficient Function. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.