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Which data structure occupies more memory: list or tuple? Why?

Python/Codingeasy0.3 min readPremium
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Asked at 1 company
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Impetus
Key Concepts Tested
python
Expert AnswerPremium
68 wordsInterview-ready
**Tuple < List:** Tuple is immutable—no over-allocation for growth. Simpler storage. sys.getsizeof((1,2,3)) < sys.getsizeof([1,2,3]). Typical 10–20% smaller for same elements. **Why:** List has growth buffer; tuple fixed. CPython optimizes small tuples (interning). **Production:** Use tuple for fixed records (return values, dict keys), list for mutable collections. In pipelines: tuple for (id, value) pairs; list for accumulating results....
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