Python Interview Questions · interview question
Which practice avoids a common mistake with Sets and Membership Testing?
Multiple choiceMediumpython-interview-2026interviewpythonpitfall
Answer and explanation
Correct answer
A. Do not choose a set when stable order or duplicate counts are required by the problem.
Why
Do not choose a set when stable order or duplicate counts are required by the problem. This is a common failure mode in real Python code and a frequent interview follow-up.
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