Python-pandas Passing list-likes to .loc or [] with any missing labels is no longer supported 问题的解决 在对某个数据集进行 pd.DataFrame(y_train).loc[train_index] 函数运算时,出现标题所显示错误。 查阅官网文档等资料后,解决办法为: pd.DataFrame(y_train).loc[y_train.index.intersection(train_index)]