ROS Service Client

  • 02_02_ros_service_client.ipynb

  • Running the cell code
    Ctrl + Enter
from __future__ import print_function
import sys
import rospy
from rospy_tutorials.srv import *

  • Import print_function from __future__ module for Python3 compatibility

  • Import sys module

  • Import rospy_tutorials.srv module

  • Import rospy modules

def add_two_ints_client(x, y):
    rospy.wait_for_service('add_two_ints')
    try:
        add_two_ints = rospy.ServiceProxy('add_two_ints', AddTwoInts)
        resp1 = add_two_ints(x, y)
        return resp1.sum
    except rospy.ServiceException as e:
        print("Service call failed: %s"%e)

  • Create add_two_ints_client() function

  • Create add_two_ints_client()

  • Get add_two_ints Service result

  • exception handling

def usage():
    return "%s [x y]"%sys.argv[0]

input_num = input("숫자 두 개를 입력하세요(ex: a,b) : ")
x = int(input_num[0])
y = int(input_num[1])
print("Requesting %s+%s"%(x, y))
print("%s + %s = %s"%(x, y, add_two_ints_client(x, y)))

  • Get user input x, y

  • Service result output