The Standard Library Tour
summary
Shows live examples that replace ad hoc code: demos of functools.single_dispatch and functools.partial for cleaner overloads, and using functools.cache/lru_cache to speed a Fibonacci demo; itertools.product, filterfalse, zip_longest for iterator work; collections.ChainMap vs merging dicts and defaultdict for grouping; doctest.testmod for tiny tests, difflib and filecmp for comparisons, and contextlib's sync and async contextmanager utilities. Practical snippets, measurable speedups, and when each tool is the right fit.
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