from tornado import gen, ioloop
import tdns
loop = ioloop.IOLoop()
channel = tdns.Channel(io_loop=loop)
@gen.coroutine
def on_start():
response = yield channel.query('aweber.com', tdns.QUERY_TYPE_MX)
print(response)
loop.stop()
loop.add_callback(on_start)
loop.start()