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問題文
ふりがな非表示
ふりがな表示
(cv_preds=np.zeros(len(test_id)))
cv_preds = np.zeros(len(test_id))
(best_trees=[])
best_trees= []
(folds_scores=[])
folds_scores=[]
(x_train=train.iloc[train_fold,:])
X_train = train.iloc[train_fold,:]