I followed the language of Beazley's slides on Python coroutines: a 'generator' is a thing like this:

  def g():
      for i in range(10):
          yield i

and a 'coroutine' is a thing like this:

  @coroutine
  def c():
      while True:
          x = yield
          print x

The code in the original post is like the latter. g() produces successive outputs when you call .next() on it; c() consumes successive inputs when you call .send(input) on it. The g() style has been in Python longer and is better integrated into the language -- you can say "for x in g():", for example. That's the point I was making, maybe too tersely.

Your point 2 is still correct, though there's a PEP to make trampolining to work around it work nicer.