AsyncResult sample

import gevent
from gevent.event import AsyncResult

a = AsyncResult()

def setter():
    print("1")
    print("2")
    print("3")

    gevent.sleep(3)
    a.set(4)      # wakeup waiter and send value "4"


def waiter():
    """
    After 3 seconds the get call will unblock.
    """
    val = a.get() # blocking
    print(val)    # val is 4 (from setter)
    print("5")
    print 'I live!'

gevent.joinall([
    gevent.spawn(setter),
    gevent.spawn(waiter),
])