Update

object_tf_service.py

@@ -6,7 +6,6 @@ from gazebo_msgs.msg import LinkStates
 global SIGKILL # Horrible hack
 SIGKILL = False
 
-a = 0
 
 class tf_service():
 	def __init__(self):
@@ -48,10 +47,8 @@ class tf_service():
 		rospy.signal_shutdown('User_requested') #SURPRISINGLY DIFFICULT
 
 	def gazebo_link_subscriber(self):
-		global a
 		# rospy.init_node('gazebo_link_subscriber')
 		rospy.Subscriber("/gazebo/link_states", LinkStates, self._callback)
-		a+=1
 		# spin() simply keeps python from exiting until this node is stopped
 		rospy.spin()
 

run

@@ -9,9 +9,12 @@ mv object_tf_service.py ../
 echo 4
 cd ../
 echo 5
-python main.py
+rm object_tf_service.pyc
 echo 6
-mv main.py RoboticSandbox/
+python main.py
 echo 7
+mv main.py RoboticSandbox/
+echo 8
 mv object_tf_service.py RoboticSandbox/
+echo 9
 echo Done