点击上方“Deephub Imba”,关注公众号,好文章不错过 !本问将覆盖 API 的每个核心部分：定义模型、约束字段、写验证器、组合嵌套结构、控制序列化。所有示例基于 Pydantic v2 和 Python 3.10+，每个清单完整可运行。用 ...

We built it on Claude Sonnet 3.5 in early 2025. We upgraded to 3.7 without incident, and to 4.0 without incident. By the time ...