random_float.py

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#!/usr/bin/env python

import roslib
import rospy
from std_msgs.msg import Float64
from random import random
def main():
    rospy.init_node("random_float")
    pub = rospy.Publisher("/random_float", Float64, queue_size=1)
    while not rospy.is_shutdown():
        val = random() * 1.0
        pub.publish(Float64(val))
        rospy.sleep(0.1)


if __name__ == "__main__":
    main()