我一直试图以字典的形式获得分类报告。因此，根据scikit-learn 0.20文档，我这样做：
from sklearn import metrics
rep = metrics.classification_report(y_true, y_pred, output_dict=True)
但出现错误提示
TypeError: classification_report() got an unexpected keyword argument 'output_dict'
The scikit-learn module in my machine was initially 0.19.1 but even after updating it to 0.20, the same error message shows.