Write a small function you can test
Walk through extracting a Python function with parameters, return value, and simple test.
stepper before-after panel marigold trap callout The fee rule must be reused in a report and verified with examples. Inputs in -> calculation -> return value -> test case Mixing input prompts with calculation makes the rule hard to test. Name input Name the parameters weight_kg and zone. This prevents the code from pretending every value is already clean. Choose shape Use if/elif branches for the small set of zones. The right Python structure makes the next operation obvious. Transform visibly Return the numeric fee instead of printing it. Small named steps beat one dense expression when the code is…
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