Skip to content
Sharp

Data Cleanup · interview question

A bug appears around safe output writes. What is the strongest first debugging move?

Multiple choiceMediumchapter-4-curatedpremiumdata-cleanupsafe-output-writes
python
from pathlib import Path

target = Path("orders.json")
temp = target.with_suffix(".tmp")
temp.write_text("[]", encoding="utf-8")
temp.replace(target)
Choose one answer
Answer and explanation

Correct answer

A. Trace one concrete example, inspect the state transitions, and compare them to the intended rule before rewriting anything.

Why

That approach is reliable because it creates evidence. If a process dies mid-write and the target file was already replaced, the next job may read corrupt output.

Test yourself on Data Cleanup

A free test with instant, explained results. No account needed.

Start free test

More Data Cleanup questions

All Data Cleanup questions →