Make python 3+ compatible

Former-commit-id: 4dcb20c5d7c3b4c30c41c8b6c29bbd4a8b523346

Make python 3+ compatible
4ce2413e · an7s · c13a678d · 4ce2413e
Commit 4ce2413e authored 7 years ago by an7s
--- a/tools/gather_stats.py
+++ b/tools/gather_stats.py
@@ -53,5 +53,5 @@ for log_file_path in sys.argv[1:]:
 				stats[step_name][attribute_name] = attribute_value

 if stats:
-	print json.dumps(stats)
+	print (json.dumps(stats))