train.py 文件源码

def cv(model, X, y, n_iter=5, test_size=0.3):
    split = cross_validation.ShuffleSplit(
        len(X), n_iter=n_iter, test_size=test_size,
    )
    return cross_validation.cross_val_score(model, X, y, cv=split,
                                            scoring='accuracy', n_jobs=-1)