The Python code:

#!/usr/bin/python

import cwiid

from time import sleep

print "Press 1+2 on the Wiimote now"
w = cwiid.Wiimote()
print "Connection established"

while (True):
   for x in range(0,16):
       sleep(1.0)
       w.led = x
       print "LED status is %02d" % w.state["led"]