Python 3.4 asyncio bug

#!/usr/bin/env python

"""
This works fine in Python 3.3, but causes a strange error in Python 3.4.0:

TypeError: send() takes 2 positional arguments but 3 were given
"""

import asyncio

def t1(q):
    yield from asyncio.sleep(0.5)
    q.put_nowait((1, 2))

def t2(q):
    v = yield from q.get()
    print(v)

q = asyncio.Queue()
asyncio.get_event_loop().run_until_complete(asyncio.wait([t1(q), t2(q)]))

I can't reproduce this problem now. Argh!