# -*- encoding:utf-8 -*-

'''
@Author : dingjiawen
@Date : 2023/12/6 16:20
@Usage : asyncio库 可以使用async和await关键字
@Desc :异步爬虫测试 定义协程 为某一个task绑定回调方法
@参考：https://github.dev/Python3WebSpider/AsyncTest
'''
import asyncio
import requests


async def request():
    url = 'https://www.baidu.com'
    status = requests.get(url)
    return status


def callback(task):
    print('Status:', task.result())


coroutine = request()
task = asyncio.ensure_future(coroutine)
# 绑定回调，来保证顺序
task.add_done_callback(callback)
print('Task:', task)

loop = asyncio.get_event_loop()
loop.run_until_complete(task)
print('Task:', task)

# 直接通过task.result()也可以直接获取结果达到类似的效果
loop = asyncio.get_event_loop()
loop.run_until_complete(task)
print('Task:', task)
print('Task Result:', task.result())