python twist

gistfile1.txt

import rclpy
from rclpy.node import Node
from geometry_msgs.msg import Twist

class TwistSubscriber(Node):
    def __init__(self):
        super().__init__('twist_subscriber')
        self.subscription = self.create_subscription(
            Twist,
            'cmd_vel',
            self.listener_callback,
            10)
        self.subscription # prevent unused variable warning

    def listener_callback(self, msg):
        self.get_logger().info(f"Received Twist: linear.x={msg.linear.x}, angular.z={msg.angular.z}")

def main(args=None):
    rclpy.init(args=args)
    twist_subscriber = TwistSubscriber()
    rclpy.spin(twist_subscriber)
    twist_subscriber.destroy_node()
    rclpy.shutdown()

if __name__ == '__main__':
    main()