asyncio generators

#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import asyncio

loop = asyncio.get_event_loop()

class Result:
    def __init__(self):
        self.result = None
        self.event = asyncio.Event()
        self.is_stopped = False


async def createGenerator(res):
    mylist = range(3)
    for i in mylist:
        await asyncio.sleep(1)
        res.result = i*i
        res.event.set()

    res.is_stopped = True
    res.event.set()


async def start():
    res = Result()

    loop.create_task(createGenerator(res))

    while True:
        await res.event.wait()
        print (res.result)
        if res.is_stopped:
            break

        res.event.clear()

try:
    loop.run_until_complete(start())

except KeyboardInterrupt:
    loop.stop()
    pass