Advanced Python · interview question
If you wrote a test around functools.wraps, what should the test prove first?
Multiple choiceEasychapter-14-curatedpremiumadvanced-pythonfunctools-wraps
from functools import wraps
def log_calls(fn):
@wraps(fn)
def wrapper(*args, **kwargs):
return fn(*args, **kwargs)
return wrapperAnswer and explanation
Correct answer
B. That the rule behaves correctly at the boundary cases the lesson is trying to make explicit.
Why
Good tests make the design safer to change because they lock in the meaningful behavior rather than surface-level implementation details.
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