Atushree-07/LogisticShippingRates — reverse-engineered prompt

I want a simple Python shipping cost calculator for a logistics use case. Make it feel complete and easy to use, not just a rough demo. A person should be able to enter the basic shipment details, get an estimated shipping price, and clearly see how the total was worked out.

Please build it around the existing Shipping_Cost_Calculator.py file. If the repo does not already define the exact pricing rules, use reasonable sample logic and keep the code easy to update later. A clean command line experience is fine, and if you can make the prompts friendly and the results nicely formatted, even better.

Also add basic input checks so bad values do not break the program, and include a few test examples or sample runs so it is easy to verify. Keep the code readable and well commented. If anything is unclear from the repo, make sensible choices and note them briefly in comments or a short usage section.