diff --git a/bin/inputdemo b/bin/inputdemo
--- a/bin/inputdemo
+++ b/bin/inputdemo
@@ -5,7 +5,7 @@ from twisted.internet import gtk3reactor
 gtk3reactor.install()
 from twisted.internet import reactor
 from rdflib import URIRef
-import optparse, logging, urllib, time
+import optparse, logging, urllib.request, urllib.parse, urllib.error, time
 from gi.repository import Gtk
 from run_local import log
 from light9 import showconfig, networking
@@ -34,7 +34,7 @@ class App(object):
         self.curve = args[0] if args else URIRef(
             'http://light9.bigasterisk.com/show/dance2014/song1/curve/c-1401259747.675542'
         )
-        print "sending points on curve %s" % self.curve
+        print("sending points on curve %s" % self.curve)
 
         reactor.run()
 
@@ -60,7 +60,7 @@ class App(object):
 
         @d.addCallback
         def done(result):
-            print "posted in %.1f ms" % (1000 * (time.time() - t1))
+            print("posted in %.1f ms" % (1000 * (time.time() - t1)))
 
 
 App()