10.19.0以前的sklearn版本才有cross_validation包,这个时候不要用model_selection导入StratifiedKFold,要用cross_validation,0.20.0换成了别的,
from sklearn.cross_validation import StratifiedKFold
10.19.0以前的sklearn版本才有cross_validation包,这个时候不要用model_selection导入StratifiedKFold,要用cross_validation,0.20.0换成了别的,
from sklearn.cross_validation import StratifiedKFold