【代码报错】求助：object of type 'NoneType' has no len()

由shi8tou创建，最终由small_q更新于2025-02-15 15:09 被浏览 30 用户

我写了一个很简单的策略，打算我自己的股票历史买卖记录”stock_transaction.csv“，在bigquant上面回测一下。结果报以下错误。有哪位大神帮忙看看怎么解决吗？谢谢！

[2023-05-01 15:15:14.984573] ERROR: moduleinvoker: module name: backtest, module version: v8, trackeback: TypeError: object of type 'NoneType' has no len() [2023-05-01 15:15:14.987319] ERROR: moduleinvoker: module name: trade, module version: v4, trackeback: TypeError: object of type 'NoneType' has no len()

https://bigquant.com/experimentshare/ac2e8720668942dd8a8a84bb991245bc

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