stuff

tb3_challenge1.py

-import rclpy  # ROS client library
+ import rclpy  # ROS client library
 from rclpy.node import Node
 from rclpy.qos import qos_profile_sensor_data
 
@@ -71,4 +71,4 @@ def main(args=None):
 
 
 if __name__ == '__main__':
-    main()
\ No newline at end of file
+    main()