Level 6Exercise #141

Parse a log line

Parse 'LEVEL timestamp message' into a group dictionary, or None when malformed.

What you’ll practice

This Level 6 exercise focuses on named regex groups in the Professional curriculum. Solve the challenge prompt above using clear, idiomatic Python and the relevant language or standard-library tools.

Relevant Python reference: re — Regular expression operations.

Sample Test Cases

Example #1

Input:parse_log('ERROR 14:20:03 timeout')

Output:{'level':'ERROR','time':'14:20:03','message':'timeout'}

Reference Solution

Reveal Reference Solution

def parse_log(line: str) -> dict[str,str] | None:
    import re
    match = re.fullmatch(r'(?P<level>[A-Z]+) (?P<time>\d{2}:\d{2}:\d{2}) (?P<message>.+)', line)
    return match.groupdict() if match else None

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Parse a log line

What you’ll practice

Sample Test Cases

Further Reading

Reference Solution