ModuleNotFoundError and ImportError due to deprecated sklearn sub-modules

[ShaunFChen]

Hi,

I was trying to rerun the example, after doing:

from stacked_generalization.lib.stacking import FWLSRegressor

I got the following errors, for stacking.py and util.py:

ModuleNotFoundError: No module named 'sklearn.cross_validation'
ImportError: cannot import name 'joblib' from 'sklearn.externals' 

According to https://stackoverflow.com/questions/30667525/importerror-no-module-named-sklearn-cross-validation and https://stackoverflow.com/questions/61893719/importerror-cannot-import-name-joblib-from-sklearn-externals, it seems to be related to the deprecation of sub-modules. It worked for me to replace all the:

from sklearn.cross_validation import StratifiedKFold, KFold
from sklearn.externals import joblib

by

from sklearn.model_selection import StratifiedKFold, KFold
import joblib

Thanks.