【ROS学习】使用python编写简单的节点

#!/usr/bin/env python

import rospy
from std_msgs.msg import String

if __name__ == ‘__main__‘:
    rospy.init_node(‘talker‘, anonymous=True)
    pub = rospy.Publisher(‘chat‘, String, queue_size=10)
    rate = rospy.Rate(10)

    while not rospy.is_shutdown():
        hello_str = "hello world! %s" % rospy.get_time()
        pub.publish(hello_str)
        rospy.loginfo(hello_str)
        rate.sleep()