patch-ab

--- pal_carbon_collector/scripts/carbon_collector_node.py.orig	2019-08-28 13:19:58.000000000 +0200
+++ pal_carbon_collector/scripts/carbon_collector_node.py	2020-03-23 20:58:55.764363209 +0100
@@ -10,7 +10,7 @@
     rospy.init_node('carbon_collector_node')
 
     if not rospy.has_param('~topics'):
-        print "No topics were specified"
+        print("No topics were specified")
         sys.exit(1)
 
     topics = rospy.get_param('~topics')
--- pal_carbon_collector/src/pal_carbon_collector/carbon_collector.py.orig	2019-08-28 13:19:58.000000000 +0200
+++ pal_carbon_collector/src/pal_carbon_collector/carbon_collector.py	2020-03-23 20:58:58.974351827 +0100
@@ -25,7 +25,7 @@
         result = self.gs.send_list(stats, timestamp.to_sec())
 
         if self.dry_run:
-            print result
+            print(result)
 
         return result