Break python3 support

Author: Pekka Pietikäinen

Diff for: app.py

@@ -11,4 +11,4 @@ def retrieve(self):
 if __name__ == "__main__":
     app = App()
     app.calculate()
-    print(app.retrieve)
+    print app.retrieve

Diff for: test.py

@@ -7,6 +7,7 @@ def test(self):
         app = App()
         app.calculate()
         self.failIf(app.retrieve() != 62)
+        self.failIf(app.retrieve() > 62)
 
 
 def main():