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What does the functools module offer?

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01

Understand the problem

Explain functools.

functools
02

Attempt it yourself

Sketch your approach before reading the solution — that's what interviews test.

Nudge consolestandby

Stuck? Beam a request up — the console returns a conceptual nudge that guides your logic without spoiling the implementation.

03

Study the solution

functools provides lru_cache/cache (memoization), partial (pre-fill arguments), reduce (fold), wraps (preserve metadata in decorators), and cmp_to_key. They're staples for caching, currying, and writing decorators.

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04

Run the code

PYlru_cache turns exponential recursion linear; partial
Practice
05

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