Aiohttp

下载文件

```python title="download_file.py import asyncio import aiohttp import pathlib cwd = pathlib.Path.cwd()

async def download_file(url, file_name): async with aiohttp.ClientSession() as session: async with session.get(url, ssl=False) as resp: if resp.status == 200: file_size = int(resp.headers['Content-Length']) with open(file_name, 'wb') as fd: progress = 0 while True: chunk = await resp.content.read(1024) if not chunk: break fd.write(chunk) progress += len(chunk) # await asyncio.sleep(0.1) # Download throttle for 100ms percentage = (progress / file_size) * 100 print(f"Download Progress: {percentage:.2f}%") else: print("Failed to download the file.")

async def main(): await download_file("https://mirrors.aliyun.com/ubuntu-releases/24.04/ubuntu-24.04-desktop-amd64.iso", cwd / "ubuntu-24.04-desktop-amd64.iso")

if name == "main": asyncio.run(main())

"```