# finalize
     ld.add_action(radar_detection)
 
-    return ld
\ No newline at end of file
+    return ld

 from std_msgs.msg import Float32
 from radar_velocity_detection.msg import RadarDetections
 import numpy as np
+
 
 class RadarVelocityDetectionNode(Node):
     def __init__(self):

         velocities = [np.sqrt(d.vx**2 + d.vy**2) for d in detections]
         return velocities
 
+
 def main(args=None):
     rclpy.init(args=args)
     node = RadarVelocityDetectionNode()

     node.destroy_node()
     rclpy.shutdown()
 
+
 if __name__ == '__main__':
     main()