Python3.x 使用 asyncio 的多个循环

使用asyncio可以有多个循环吗？如果回答是"是"，我该怎么做？

提取URL的示例:

import asyncio
import aiohttp
from suburls import extractsuburls

@asyncio.coroutine
def extracturls(url):
    subtasks = []
    response = yield from aiohttp.request('GET', url)
    suburl_list = yield from response.text()
    for suburl in suburl_list:
        subtasks.append(asyncio.Task(extractsuburls(suburl)))
     loop = asyncio.get_event_loop()
     loop.run_until_complete(asyncio.gather(*subtasks))

 if __name__ == '__main__':
     urls_list = ['http://example1.com', 'http://example2.com']
     for url in url_list: 
          subtasks.append(asyncio.Task(extractsuburls(url)))  
     loop = asyncio.get_event_loop()
     loop.run_until_complete(asyncio.gather(*subtasks))
     loop.close()

如果我执行这段代码，当python试图启动第二个循环时，就会出现一个错误，即循环已经在运行.

另外:我的模块"extractsuburls"使用aiohttp来执行web请求.

编辑:

我try 过这个解决方案:

import asyncio
import aiohttp
from suburls import extractsuburls

@asyncio.coroutine
def extracturls( url ):
    subtasks = []
    response = yield from aiohttp.request('GET', url)
    suburl_list = yield from response.text()
    jobs_loop = asyncio.new_event_loop()
    for suburl in suburl_list:
        subtasks.append(asyncio.Task(extractsuburls(suburl)))
     asyncio.new_event_loop(jobs_loop)
     jobs_loop.run_until_complete(asyncio.gather(*subtasks))
     jobs_loop.close()

 if __name__ == '__main__':
     urls_list = ['http://example1.com', 'http://example2.com']
     for url in url_list: 
          subtasks.append(asyncio.Task(extractsuburls(url)))  
     loop = asyncio.get_event_loop()
     loop.run_until_complete(asyncio.gather(*subtasks))
     loop.close()

但我有一个错误:循环参数必须与future 一致

知道吗？