Clean a CSV with Python without guessing which duplicate to keep
A free, runnable walkthrough: validate a small order export, separate conflicting records, and produce a review report. No extra Python packages required.
Read storyPractical Help
Clear explanations for the decisions behind a project.
The shelf says it holds 50 pounds. Does that mean anywhere—or only when the weight is spread out?
A load number is incomplete without the shelf, configuration, anchoring, weight distribution and instructions that define it.
Read storyYour recipe says one cup of flour. Why can two cups weigh differently?
A cup measures volume; packing, scooping and settling change how much flour occupies that space.
Read storyThe recipe fits one 9×13-inch pan. Can two 8-inch round pans replace it?
Surface area can compare the footprints, but pan depth, batter volume and baking behavior still decide whether the swap works.
Read storyA gallon says it covers 400 square feet. Why might one can still not finish the walls?
Wall area, coats, surface condition and whole-can rounding answer different parts of the paint question.
Read storyA 65-inch TV is not 65 inches wide. What actually has to fit?
The advertised size runs diagonally across the screen. Furniture, stands, wall space and delivery routes care about different dimensions.
Read storyThe table seats six. Does the room?
A tabletop dimension counts furniture. A workable dining area also has to count chairs, bodies, routes and the moments between courses.
Read storyYour curtain rod is 72 inches. Why isn’t one 72-inch panel enough?
Rod width, panel width and finished coverage are different numbers. Separate them before ordering curtains.
Read storyThe storage bin fits the shelf. Why does none of your stuff fit the bin?
Outside dimensions sell the container; inside dimensions decide what it can actually hold.
Read storyThe sofa fits the room. Can it get through the front door?
Measure the delivery route as a sequence of openings, turns and handling spaces before committing to large furniture.
Read storyThe flooring-box mistake that hides in perfectly good math
Rounding each room separately can change your shopping list. Here is when that matters.
Read storyThe cheaper mulch bag might be the expensive one
A smaller sticker price is not the same thing as a smaller project bill.
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