cleanup: pep8

also remove empty class parenthesis

release/scripts/startup/bl_ui/space_node.py

@@ -464,8 +464,8 @@ class NODE_PT_grease_pencil_tools(GreasePencilToolsPanel, Panel):
     bl_options = {'DEFAULT_CLOSED'}
 
     # NOTE: this is just a wrapper around the generic GP tools panel
-	# It contains access to some essential tools usually found only in
-	# toolbar, but which may not necessarily be open
+    # It contains access to some essential tools usually found only in
+    # toolbar, but which may not necessarily be open
 
 
 # Tool Shelf ------------------
@@ -484,6 +484,7 @@ class NODE_PT_tools_grease_pencil_edit(GreasePencilStrokeEditPanel, Panel):
 
 # -----------------------------
 
+
 def node_draw_tree_view(layout, context):
     pass