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期权链数据缺失 #482
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DataDownloader下载器指定历史区间,选定’2015-01-01‘ --- 至今,下载所有合约时,下载结果中存在合约缺失(多数为郑商所数据和股指期权数据),请问是什么问题。总共缺失3000+,其中存在一些较近的时间的期权也缺失。使用DataDownloader下载器单独下载缺失合约数据也是空的,例如CZCE.SM403C5300
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