text: #!/usr/bin/env python
  from __future__ import print_function
  import rospy
  import sys
  from week2.srv import *
  
  def convert_coord(x,y,a):
      rospy.wait_for_service('convert_coordinates')
      convert_coordinates = rospy.ServiceProxy('convert_coordinates', ConvertCoordinates)
      resp1 = convert_coordinates(x,y,a)
      print("The converted coordinates are (%f, %f)"%(resp1.first_c, resp1.second_c)) 
  
  if len(sys.argv) == 4:
      x = float(sys.argv[1])
      y = float(sys.argv[2])
      a = float(sys.argv[3])
  else:
      sys.exit(1)
  
  print("Converting the coordinates...")
  convert_coord(x,y,a)