--- a/python/bouncing_cube.py	Mon Jul 22 22:56:51 2013 +0200
+++ b/python/bouncing_cube.py	Tue Jul 23 16:50:02 2013 +0200
@@ -298,7 +298,7 @@
       state = newstate
 
       t += dt
-      print state[6,0], t, ' ', (t/endtime)*100.0, '%'
+      print(state[6,0], t, ' ', (t/endtime)*100.0, '%')
     return states
   
 
@@ -394,11 +394,11 @@
 
 et = 20.0
 dt = 0.04
-print 'starting integration... endtime =', et, ' stepsize =', dt
+print('starting integration... endtime =', et, ' stepsize =', dt)
 t0 = time.time()
 states = simulate(et, dt)
 t1 = time.time()
-print 'That was heavy, it took me ', t1-t0, ' seconds!'
+print('That was heavy, it took me ', t1-t0, ' seconds!')
 app = QApplication(sys.argv)
 w = W(states, dt)
 w.show()