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Domain Driven Design Aggregate Root Example in Python

Model an Order as an aggregate root with invariants enforced through methods, demonstrating DDD principles in Python.

from __future__ import annotations
from dataclasses import dataclass
from typing import List, Optional
from uuid import uuid4


class Money:
    def __init__(self, amount: float, currency: str = "USD"):
        self.amount = amount
        self.currency = currency

    def __add__(self, other: Money) -> Money:
       …

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