diff --git a/gunpowder/nodes/__init__.py b/gunpowder/nodes/__init__.py
index 1f10c25c..42cbf46f 100644
--- a/gunpowder/nodes/__init__.py
+++ b/gunpowder/nodes/__init__.py
@@ -46,4 +46,4 @@
 from .zarr_source import ZarrSource
 from .zarr_write import ZarrWrite
 from .gp_array_source import ArraySource as GPArraySource
-from .gp_graph_source import GraphSource as GPGraphSource
\ No newline at end of file
+from .gp_graph_source import GraphSource as GPGraphSource
diff --git a/gunpowder/nodes/gp_array_source.py b/gunpowder/nodes/gp_array_source.py
index d73572e8..0277abd3 100644
--- a/gunpowder/nodes/gp_array_source.py
+++ b/gunpowder/nodes/gp_array_source.py
@@ -22,4 +22,3 @@ def provide(self, request):
         else:
             outputs[self.key] = copy.deepcopy(self.array.crop(request[self.key].roi))
         return outputs
-
diff --git a/gunpowder/nodes/random_location.py b/gunpowder/nodes/random_location.py
index e93949ac..192d7722 100644
--- a/gunpowder/nodes/random_location.py
+++ b/gunpowder/nodes/random_location.py
@@ -459,13 +459,11 @@ def __select_random_location_with_points(
 
             # count all points inside the shifted ROI
             points = self.__get_points_in_roi(request_points_roi.shift(random_shift))
-            assert point in points, (
-                "Requested batch to contain point %s, but got points "
-                "%s"
-                % (
-                    point,
-                    points,
-                )
+            assert (
+                point in points
+            ), "Requested batch to contain point %s, but got points " "%s" % (
+                point,
+                points,
             )
 
             return random_shift
diff --git a/tests/cases/random_location.py b/tests/cases/random_location.py
index e60d1ec5..52c4ccce 100644
--- a/tests/cases/random_location.py
+++ b/tests/cases/random_location.py
@@ -96,7 +96,7 @@ def test_output():
                         ),
                         b: ArraySpec(
                             roi=Roi(batch[random_shift_key].data, (20, 20, 20))
-                        )
+                        ),
                     }
                 )
             )