Just stumbled across this little gem, and I don’t want to forget about it. Here is a decorator that takes care of the ugliness in first call to .next(), necessary for receiving coroutines in Python.

def consumer(func):
  def start(*args,**kwargs):
  c = func(*args,**kwargs)
  c.next()
  return c
  return start

@consumer
def recv_count():
 try:
   while True:
     n = (yield) # Yield expression
     print "T-minus", n
 except GeneratorExit:
   print "Kaboom!"

http://www.dabeaz.com/coroutines/Coroutines.pdf