df_classes.py 文件源码

def transform(self, X):
        Xs = Parallel(n_jobs=self.n_jobs)(
            delayed(_transform_one)(trans, name, weight, X)
            for name, trans, weight in self._iter())
        if self.drop:
            return self._concat_just_right(Xs[0], Xs[1:])
        return self._concat_just_right(X, Xs)