--- setup.py.orig	Fri Oct 21 12:46:25 2016
+++ setup.py	Mon Nov 14 15:23:47 2016
@@ -919,7 +919,7 @@ else: # INTERACTIVE_MODE
                 if len(path) > 0:
                     cmd = 'hp-testpage -i %s' % param
                 else:
-                    cmd = 'python ./testpage.py -i %s' % param
+                    cmd = '${MODPY_BIN} ${TRUEPREFIX}/share/hplip/testpage.py -i %s' % param
 
                 os_utils.execute(cmd)