What wins Python list vs tuple vs set for lookups?

Sets, hands down — O(1) hash vs linear scan. 300x faster in benchmarks.

Is tuple faster than list in Python?

Mostly neck-and-neck, but tuples use less memory and avoid mutation bugs. Swap 'em for stability.

For unique elements and fast contains/add/remove. Avoid for ordered or duplicate needs.

Clock ticks. Sets hit 0.0001s. Lists crawl at 0.03s. This Python speed test flips everything you thought you knew about data structures.

theAIcatchup Apr 10, 2026 4 min read

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#Python #data structures #list vs tuple vs set #performance benchmarks #performance-benchmark #speed-test

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Originally reported by Reddit r/programming