support for ancient Python versions (2.7.x)
diff --git a/example/example1.py b/example/example1.py
index 30cda8d..f89b662 100755
--- a/example/example1.py
+++ b/example/example1.py
@@ -1,4 +1,5 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
+from __future__ import print_function
 import sys
 sys.path.append('.')