本地数据适配器与API边界

Lesson Overview

In "Python Quant Trading Lab" → "本地研究引擎与接口边界", this lesson "本地数据适配器与API边界" builds knowledge you can apply immediately.

本地适配器把CSV字段转换为研究引擎输入。外部API则还涉及鉴权、频率、重试与时区；本课程代码不要求密钥也不连接真实服务。 声明输入schema→逐列校验→时间单调/唯一检查→无效输入返回明确错误→引擎只接受已校验记录。 本课作业：为timestamp/open/high/low/close/volume写最小约束，说明缺close和过期时间应该如何处理。

Core Concepts

These points align with the video walkthrough—take notes as you watch.

• ▸本地适配器把CSV字段转换为研究引擎输入。外部API则还涉及鉴权、频率、重试与时区；本课程代码不要求密钥也不连接真实服务。
• ▸声明输入schema→逐列校验→时间单调/唯一检查→无效输入返回明确错误→引擎只接受已校验记录。
• ▸本课作业：为timestamp/open/high/low/close/volume写最小约束，说明缺close和过期时间应该如何处理。

Practical Application

After studying, complete the companion practice lesson to move from understanding to doing.

• ▸Follow along in Jupyter or VS Code
• ▸Log how parameter changes affect backtest results
• ▸Submit a reproducible analysis notebook

FAQ

• ▸Q: How does this lesson fit the course? A: Part of "本地研究引擎与接口边界"—follow the curriculum order.
• ▸Q: What do I need? A: Demo account and notes; quant lessons need a Python environment.
• ▸Q: How do I know I've mastered it? A: Pass the quiz and explain three key points of 本地数据适配器与API边界 on your own.