#!/usr/bin/python3.5

# Install packages to use Python3 with ROS 
# sudo apt-get install python3-yaml
# sudo pip3 install rospkg catkin_pkg
import rospy
import sys
from std_msgs.msg import String

def talker():
    pub = rospy.Publisher('chatter', String, queue_size=10)
    rospy.init_node('talker', anonymous=True)
    rate = rospy.Rate(1) # 10hz
    print ("Python Version: ", sys.version)
    while not rospy.is_shutdown():
        hello_str = "hello world %s" % rospy.get_time()
        rospy.loginfo(hello_str)
        pub.publish(hello_str)
        rate.sleep()

if __name__ == '__main__':
    try:
        talker()
    except rospy.ROSInterruptException:
        pass
    

