[pre-commit.ci] auto fixes from pre-commit.com hooks

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tests/test_isoforest.py

@@ -110,6 +110,7 @@ def test_reproducibility():
     forest2 = build_forest(n_features, random_seed)
     assert_forest_scores(forest1, forest2, n_features=n_features)
 
+
 def test_apply():
     n_features = 16
     n_trees = 100
@@ -129,9 +130,10 @@ def test_apply():
     forest.fit(data)
 
     scores = np.sum(forest.evaluator.selectors[forest.apply(data)]["value"], axis=1)
-    scores = -2**(-scores / (forest.evaluator.average_path_length(n_subsamples) * n_trees))
+    scores = -(2 ** (-scores / (forest.evaluator.average_path_length(n_subsamples) * n_trees)))
     assert_allclose(forest.score_samples(data), scores)
 
+
 @pytest.mark.regression
 def test_regression(regression_data):
     random_seed = 0