test_base.py 文件源码

def test_clone_2():
    # Tests that clone doesn't copy everything.
    # We first create an estimator, give it an own attribute, and
    # make a copy of its original state. Then we check that the copy doesn't
    # have the specific attribute we manually added to the initial estimator.

    from sklearn.feature_selection import SelectFpr, f_classif

    selector = SelectFpr(f_classif, alpha=0.1)
    selector.own_attribute = "test"
    new_selector = clone(selector)
    assert_false(hasattr(new_selector, "own_attribute"))