training-data – Read For Learn

ValueError: multiclass format is not supported

It seems the task you are trying to solve is regression: predicting the price. However, you are training a classification model, that assigns a class to every input. ROC-AUC score is meant for classification problems where the output is the probability of the input belonging to a class. If you do a multi-class classification, then …

Parameter “stratify” from method “train_test_split” (scikit Learn)

Scikit-Learn is just telling you it doesn’t recognise the argument “stratify”, not that you’re using it incorrectly. This is because the parameter was added in version 0.17 as indicated in the documentation you quoted. So you just need to update Scikit-Learn.