Fix flake8 for utils and tests (scikit-adaptation#73)

skada/_utils.py

@@ -17,6 +17,7 @@
 )
 from sklearn.utils.multiclass import type_of_target
 
+
 _logger = logging.getLogger('skada')
 _logger.setLevel(logging.DEBUG)
 
@@ -93,7 +94,7 @@ def _find_y_type(y):
     """
 
     # We need to check for this case first because
-    # type_of_target() doesnt handle nan values
+    # type_of_target() doesn't handle nan values
     if np.any(np.isnan(y)):
         if y.ndim != 1:
             raise ValueError("For a regression task, "

skada/tests/test_utils.py

@@ -5,15 +5,15 @@
 import pytest
 
 import numpy as np
-from skada.datasets import (
-    make_dataset_from_moons_distribution
-)
 
+from skada.datasets import make_dataset_from_moons_distribution
 from skada.utils import (
     check_X_y_domain, check_X_domain,
-    extract_source_indices
+    extract_source_indices,
+    source_target_split,
+    source_target_merge
 )
-from skada.utils import source_target_split, source_target_merge
+from skada.utils import source_target_split
 from skada._utils import _check_y_masking