协程_task对象

最新推荐文章于 2026-01-07 13:36:22 发布

原创最新推荐文章于 2026-01-07 13:36:22 发布 · 186 阅读

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使用Python的aiohttp库和asyncio模块，通过创建并管理协程任务来并发获取多个网页内容，实现了高效的异步网络请求。代码中展示了如何创建task对象，并通过asyncio.wait()进行任务等待，最后使用asyncio.run()执行主任务。

import asyncio
# 例3 依赖await 返回值的
async def func3(index):
    print("func3 start {}".format(index))
    answer = await add(index)
    print("func3 end {}".format(answer))

async def add(index):
    print("add start {}".format(index))
    # await asyncio.sleep(2)
    print("add end {}".format(index))
    return 1+index

async def main():
    print("mian开始执行")
    task = [
        asyncio.create_task(func3(1)),
        asyncio.create_task(func3(2)),
        asyncio.create_task(func3(4)),
        asyncio.create_task(func3(5))
    ]
    done, pending = await asyncio.wait(task)
    print(done)
asyncio.run(main())

import asyncio
# 例3 依赖await 返回值的
async def func3(index):
    print("func3 start {}".format(index))
    answer = await add(index)
    print("func3 end {}".format(answer))

async def add(index):
    print("add start {}".format(index))
    # await asyncio.sleep(2)
    print("add end {}".format(index))
    return 1+index

task_list =(func3(1),func3(2),func3(4),func3(5))
done,pending = asyncio.run(asyncio.wait(task_list))
print(done)

import aiohttp

import asyncio

async def fetch(session, url):

async with session.get(url,verify_ssl=False) as response:

text = await response.text()

print(text)

async def main():

async with aiohttp.ClientSession() as session:

url_list = [

'https://python.org',

'https://www.baidu.com',

'https://www.pythonav.com'