asyncio异步编程(4)

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asyncio异步编程(4)
方式二：基于协程的异步编程实现
						
												"""

												下载图片使用第三方模块aiohttp，请提前安装：pip3 install aiohttp

												"""

												#!/usr/bin/env python

												# -*- coding:utf-8 -*-

												import aiohttp

												import asyncio

												async def fetch(session, url):

												    print("发送请求：", url)

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

												        content = await response.content.read()

												        file_name = url.rsplit('_')[-1]

												        with open(file_name, mode='wb') as file_object:

												            file_object.write(content)

												async def main():

												    async with aiohttp.ClientSession() as session:

												        url_list = [

												            'https://www3.autoimg.cn/newsdfs/g26/M02/35/A9/120x90_0_autohomecar__ChsEe12AXQ6AOOH_AAFocMs8nzU621.jpg',

												            'https://www2.autoimg.cn/newsdfs/g30/M01/3C/E2/120x90_0_autohomecar__ChcCSV2BBICAUntfAADjJFd6800429.jpg',

												            'https://www3.autoimg.cn/newsdfs/g26/M0B/3C/65/120x90_0_autohomecar__ChcCP12BFCmAIO83AAGq7vK0sGY193.jpg'

												        ]

												        tasks = [asyncio.create_task(fetch(session, url)) for url in url_list]

												        await asyncio.wait(tasks)

												if __name__ == '__main__':

												    asyncio.run(main())
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