python 3.2 compatiblity (closes #56)
diff --git a/example/example2.py b/example/example2.py
index f42ee49..4220134 100755
--- a/example/example2.py
+++ b/example/example2.py
@@ -30,11 +30,11 @@
 instance.print_dict_2(dict_result)
 
 set_result = instance.get_set()
-set_result.add(u'key3')
+set_result.add('key3')
 instance.print_set(set_result)
 
 set_result = instance.get_set2()
-set_result.add(u'key3')
+set_result.add('key3')
 instance.print_set_2(set_result)
 
 list_result = instance.get_list()