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35 lines
758 B
Markdown
35 lines
758 B
Markdown
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# Python 模式
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> 本文档扩展了 [common/patterns.md](../common/patterns.md),补充了 Python 特定的内容。
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## 协议(鸭子类型)
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```python
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from typing import Protocol
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class Repository(Protocol):
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def find_by_id(self, id: str) -> dict | None: ...
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def save(self, entity: dict) -> dict: ...
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```
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## 数据类作为 DTO
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```python
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from dataclasses import dataclass
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@dataclass
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class CreateUserRequest:
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name: str
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email: str
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age: int | None = None
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```
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## 上下文管理器与生成器
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* 使用上下文管理器(`with` 语句)进行资源管理
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* 使用生成器进行惰性求值和内存高效迭代
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## 参考
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查看技能:`python-patterns`,了解包括装饰器、并发和包组织在内的综合模式。
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