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stockranker报错TypeError: '<' not supported between instances of 'NoneType' and 'int'

由dandelion4创建,最终由dandelion4 被浏览 11 用户

请教:报TypeError: '<' not supported between instances of 'NoneType' and 'int'是什么原因?

https://bigquant.com/codesharev3/3133fbc3-5ff7-48c9-af49-38abbf0442ec

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