make isort happy

tests/python_package_test/test_engine.py

@@ -15,7 +15,13 @@
 import psutil
 import pytest
 from scipy.sparse import csr_matrix, isspmatrix_csc, isspmatrix_csr
-from sklearn.datasets import load_svmlight_file, make_blobs, make_classification, make_multilabel_classification, make_regression
+from sklearn.datasets import (
+    load_svmlight_file, 
+    make_blobs, 
+    make_classification, 
+    make_multilabel_classification, 
+    make_regression,
+)
 from sklearn.metrics import average_precision_score, log_loss, mean_absolute_error, mean_squared_error, roc_auc_score
 from sklearn.model_selection import GroupKFold, TimeSeriesSplit, train_test_split