A focused repair for a small Python script that fails or produces the wrong result. I will fix ONE reproducible defect in ONE local script of up to 300 lines, using Python 3.12+ and the standard library on Windows. Please message before ordering with source you are allowed to modify, redacted input up to 1 MB, exact steps, actual behavior and an expected result. This lets us confirm scope and compatibility. You receive corrected source, an explanation of the cause and change, run instructions and a runnable regression check. I check the supplied failing example and relevant edge cases. Delivery: five days after complete requirements, with one revision for the same agreed defect. This package excludes new features, whole applications, GUI work, third-party packages, APIs, scraping, databases, production servers and deployment. The gallery shows a deliberately created demonstration, not past client work: the incorrect total 23.10 becomes 35.60 after a focused fix. I use AI-assisted development and verify the agreed behavior before delivery.