# -*- encoding: utf-8 -*-
"""
@Time    : 2020/6/25
@Author  : hongboli
"""
import asyncio
import requests


async def download_image(url):
    # 发送网络请求，下载图片（遇到网络下载图片的IO请求，自动化切换到其他任务）
    print("开始下载:", url)

    loop = asyncio.get_event_loop()
    # requests模块默认不支持异步操作，所以就使用线程池来配合实现了。
    future = loop.run_in_executor(None, requests.get, url)

    response = await future
    print('下载完成')
    # 图片保存到本地文件
    file_name = url.rsplit('_')[-1]
    with open(file_name, mode='wb') as file_object:
        file_object.write(response.content)


if __name__ == '__main__':
    url_list = [
        'https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1590918729593&di=52738a7ab704a17c742c89a7f1b79ec3&imgtype=0&src=http%3A%2F%2Fe.hiphotos.baidu.com%2Fzhidao%2Fpic%2Fitem%2F7dd98d1001e939014d91b6e079ec54e737d19658.jpg',
        'https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1590918597135&di=69ded1b30923b75e6baa210889bdbeef&imgtype=0&src=http%3A%2F%2Fpic1.win4000.com%2Fwallpaper%2F2017-12-29%2F5a45a53b2763d.jpg',
        'https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1590918536758&di=5a9d49f622a3c2f092830713174a89d2&imgtype=0&src=http%3A%2F%2Fimg.pconline.com.cn%2Fimages%2Fupload%2Fupc%2Ftx%2Fwallpaper%2F1305%2F16%2Fc4%2F20990657_1368686545119.jpg'
    ]

    tasks = [download_image(url) for url in url_list]

    loop = asyncio.get_event_loop()
    loop.run_until_complete(asyncio.wait(tasks))