Day6 - 7.协程相关操作回顾_高清 1080P

import asyncio
#async修饰的函数，调用之后返回一个协程对象
async def request(url):
    print('增在请求的url是',url)
    print('请求成功',url)
c=request('www.baidu.com')
#创建一个事件循环对象
loop=asyncio.get_event_loop()
#将协程对象注册到loop中，然后启动loop
loop.run_until_complete(c)

task的使用

import asyncio
async def request(url):
    print('增在请求的url是',url)
    print('请求成功',url)
c=request('www.baidu.com')
loop=asyncio.get_event_loop()
#基于loop创建一个task对象
task=loop.create_task(c)
print(task)
loop.run_until_complete(task)
print(task)

<Task pending coro=<request() running at C:/Users/16486/PycharmProjects/pythonProject1234/main.py:2>>
增在请求的url是 www.baidu.com
请求成功 www.baidu.com
<Task finished coro=<request() done, defined at C:/Users/16486/PycharmProjects/pythonProject1234/main.py:2> result=None>

future的使用

import asyncio
async def request(url):
    print('增在请求的url是',url)
    print('请求成功',url)
c=request('www.baidu.com')
loop=asyncio.get_event_loop()
task=asyncio.ensure_future(c)
print(task)
loop.run_until_complete(task)
print(task)