【代码报错】cannot access local variable 'stock_lastday_price' where it is not associated with a value
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K 线处理函数，获取持仓股票的当日收盘价和前一日收盘价，出现错误，请老师帮忙看看，谢谢
错误：cannot access local variable 'stock_lastday_price' where it is not associated with a value