Python Internals · interview question
A teammate submits shaky mutability traps code. Which review comment is the strongest?
Multiple choiceMediumchapter-19-curatedpremiumpython-internalsmutability-traps
Answer and explanation
Correct answer
A. Make the rule clearer and easier to explain. Understand which values are reused and when state accidentally survives between calls.
Why
The best review comment anchors the change to readability, correctness, and future maintenance. Mutable defaults and hidden shared containers create bugs that feel spooky until you know the model.
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