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Building Robust Object-Oriented Python Applications and Libraries

Solution: Design an Order Processing System

Explore building a class diagram for an order processing system by identifying classes, attributes, methods, and relationships. Understand how to apply object-oriented principles such as inheritance and aggregation to model customers, orders, products, and payments effectively.

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You must have gone through the various steps to design a complete class diagram of the case study given in the previous lesson. Let’s discuss how we can build a complete class diagram for the order processing system step by step:

Identify classes

Let’s split our order processing system into multiple steps to make the entire process convenient to follow.

  • The customer logs in with their account, adds items to the cart, and places the order.
  • The respective management team monitors the order, and instructions are transferred to the appropriate team prepare the order.
  • After the
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