Modeling an Order Management System with Python Dataclasses

This tutorial builds an order management system for an e-commerce platform using Python's dataclasses module, covering @dataclass basics and generated init/repr/eq, field() with defaultfactory for mutable defaults, postinit for validation and derived fields, frozen=True for immutable instances, order=True for comparison operators, field() parameters repr=False and compare=False for sensitive fields, metadata for PII annotation, and dataclasses.asdict for serialization.