Debugging · interview question
A bug appears around tracebacks and root cause. What is the strongest first debugging move?
Multiple choiceMediumchapter-5-curatedpremiumdebuggingtracebacks-and-root-cause
def line_total(price: float, quantity: int) -> float:
return price * quantity
print(line_total("9.99", 3))Answer and explanation
Correct answer
B. 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. Replacing every exception with a vague generic message erases the clue that would have shortened the investigation.
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More Debugging questions
- When is logging being used in the wrong way?
- Which move is the best default when logging becomes part of this workflow?
- Which explanation would sound strongest in an interview when discussing logging?
- What assumption should be made explicit when working with logging?
- Which move is the best default when tracebacks and root cause becomes part of this workflow?
- Which option treats logging as an engineering policy decision instead of a syntax trick?