Lee Yuntong

\是一个占位符（placeholder），它会被函数fill_placeholder替换为模型的prediction scores，交易策略会根据这些预测得分来选择和排序股票，然后决定买卖哪些股票以及买卖的数量。[用例](https://github.com/microsoft/qlib/blob/cde80206e416be919c6652b4fd07f0cba0520789/docs/component/strategy.rst#usage--example)

Here is a code reproduction based on the issue description. Although the two numpy.datetime64 values are equal, the difference in precision causes a dict indexing failure. The following code successfully...