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from sklearn.base import BaseEstimator, TransformerMixin
from sklearn.model_selection import cross_val_predict
from sklearn.pipeline import make_union
from sklearn.model_selection._split import check_cv
from sklearn.utils.validation import check_X_y

class BlendedClassifierTransformer(BaseEstimator, TransformerMixin):
    def __init__(self, clf, cv=3):
        self.clf = clf
        self.cv = cv