Advanced Python · interview question
A bug appears around simple decorators. What is the strongest first debugging move?
Multiple choiceEasychapter-14-curatedpremiumadvanced-pythonsimple-decorators
def log_calls(fn):
def wrapper(*args, **kwargs):
print(f"calling {fn.__name__}")
return fn(*args, **kwargs)
return wrapperAnswer 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. Wrapping logic in decorators without clarity can make the call path harder to follow.
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