Python Interview Questions · interview question

Which practice avoids a common mistake with Variables, References, and Mutability?

Multiple choiceMediumpython-interview-2026interviewpythonpitfall

Prefer the version of Variables, References, and Mutability that makes behavior less predictable as long as the code still runs.Ignore the Variables, References, and Mutability issue and rely on team discipline instead of clearer APIs or invariants.Do not confuse rebinding a name with mutating a shared object, because the two actions produce different downstream behavior.Silence the Variables, References, and Mutability problem by using broad catches, hidden globals, or extra shared mutable state.

Answer and explanation

Correct answer

C. Do not confuse rebinding a name with mutating a shared object, because the two actions produce different downstream behavior.

Why

Do not confuse rebinding a name with mutating a shared object, because the two actions produce different downstream behavior. This is a common failure mode in real Python code and a frequent interview follow-up.

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Which practice avoids a common mistake with Variables, References, and Mutability?

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