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Tape One Entry Point Before You Extract Anything From a Messy Module

This story is from 2026-09-21. It is preserved in the archive; the latest stories are on the live feed.

A tangled pricing function still mixes tax rules, discounts, and rounding in one seven-hundred-line Python module. An agent then opens a pull request that rewrites helpers, renames locals, and claims the cleanup is behavior-preserving. The existing tests remain green because they only assert a fina…

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  1. 2026-09-21 13:02 · DEV Community — AI
    Tape One Entry Point Before You Extract Anything From a Messy Module

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