def generate_launch_description():
     """Launch localization node."""
-    config_file = LaunchConfiguration('config', default_value='./config/config.yaml')   #getting config we defined in config.yaml
-
+    config_file = LaunchConfiguration(
+        'config', default_value='./config/config.yaml')  # getting config we defined in config.yaml
 
     return LaunchDescription([
         # Declare the launch argument
         DeclareLaunchArgument(
             'config',
-            default_value = config_file,
+            default_value=config_file,
         ),
-        
+
         Node(
             package='robot_localization',
             executable='ekf_localization_node',

             output='screen'
         )
     ])
-