订单与仓位管理

Lesson Overview

In "Python Quant Trading Lab" → "Backtrader 策略开发", this lesson "订单与仓位管理" builds knowledge you can apply immediately.

订单对象的Submitted、Accepted、Completed、Canceled与Rejected不同。只看持仓可能漏掉在途请求，next每根重复发单可使规模失控。 保存pending标识→通知回调按终态清除→成交后更新实际规模→拒单记原因→未知状态先对账。 本课作业：本根发送买入后下根尚未确认，策略再次看到信号，是否应重复买？设计最小状态表。

Core Concepts

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

• ▸订单对象的Submitted、Accepted、Completed、Canceled与Rejected不同。只看持仓可能漏掉在途请求，next每根重复发单可使规模失控。
• ▸保存pending标识→通知回调按终态清除→成交后更新实际规模→拒单记原因→未知状态先对账。
• ▸本课作业：本根发送买入后下根尚未确认，策略再次看到信号，是否应重复买？设计最小状态表。

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 "Backtrader 策略开发"—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 订单与仓位管理 on your own.