Software developer proposes lifecycle modeling with state and command enums

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A software developer proposes representing an order's lifecycle as an explicit behavioral contract using state machines. The approach uses Python enumerations to define distinct order states and commands rather than inferring rules from function logic. It models an order moving through created, paid, and shipped states via capture_payment and ship_order commands. This makes the system's valid transitions explicit and centralized, improving clarity and maintainability. The article documents this transition from implicit, code-scattered rules to an explicit, table-driven contract.

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