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

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

machine_learning/catboost_regressor.py

@@ -59,9 +59,7 @@ def catboost_regressor(features: np.ndarray, target: np.ndarray) -> CatBoostRegr
     >>> isinstance(model, CatBoostRegressor)
     True
     """
-    regressor = CatBoostRegressor(
-        iterations=100, learning_rate=0.1, depth=6, verbose=0
-    )
+    regressor = CatBoostRegressor(iterations=100, learning_rate=0.1, depth=6, verbose=0)
     regressor.fit(features, target)
     return regressor
 
@@ -99,4 +97,4 @@ def main() -> None:
     import doctest
 
     doctest.testmod(verbose=True)
-    main()
+    main()