diff --git a/metadrive/base_class/nameable.py b/metadrive/base_class/nameable.py
index 26447479b..bdf36d3b1 100644
--- a/metadrive/base_class/nameable.py
+++ b/metadrive/base_class/nameable.py
@@ -7,7 +7,6 @@ class Nameable:
     """
     Instance of this class will have a special name
     """
-
     def __init__(self, name=None):
         # ID for object
         self.name = random_string() if name is None else name
diff --git a/metadrive/component/block/base_block.py b/metadrive/component/block/base_block.py
index 9432f3551..628b700c1 100644
--- a/metadrive/component/block/base_block.py
+++ b/metadrive/component/block/base_block.py
@@ -339,8 +339,8 @@ def destroy(self):
         super(BaseBlock, self).destroy()
 
     # def __del__(self):
-        # self.destroy()
-        # logger.debug("{} is being deleted.".format(type(self)))
+    # self.destroy()
+    # logger.debug("{} is being deleted.".format(type(self)))
 
     @property
     def bounding_box(self):
diff --git a/metadrive/component/road_network/edge_road_network.py b/metadrive/component/road_network/edge_road_network.py
index 496ce8a8b..172c27380 100644
--- a/metadrive/component/road_network/edge_road_network.py
+++ b/metadrive/component/road_network/edge_road_network.py
@@ -16,7 +16,6 @@ class EdgeRoadNetwork(BaseRoadNetwork):
     Compared to NodeRoadNetwork representing the relation of lanes in a node-based graph, EdgeRoadNetwork stores the
     relationship in edge-based graph, which is more common in real map representation
     """
-
     def __init__(self):
         super(EdgeRoadNetwork, self).__init__()
         self.graph = {}