Python Interview Questions · interview question
In Python, which comparison about Sets and Membership Testing is accurate?
Multiple choiceEasypython-interview-2026interviewpythoncomparison
Answer and explanation
Correct answer
B. A set discards duplicates and order, while a list preserves order but makes repeated membership checks more expensive.
Why
A set discards duplicates and order, while a list preserves order but makes repeated membership checks more expensive. This is the comparison that usually separates memorization from understanding.
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