如何使用async python测试网络带宽和延迟？

import asyncio
import aiohttp

async def test_bandwidth_and_latency(url):
    async with aiohttp.ClientSession() as session:
        start_time = asyncio.get_event_loop().time()
        async with session.get(url) as response:
            content = await response.read()
        end_time = asyncio.get_event_loop().time()
        elapsed_time = end_time - start_time

        bandwidth = len(content) / elapsed_time / 1024 / 1024  # Mbps
        latency = elapsed_time * 1000  # milliseconds

        print(f"Bandwidth: {bandwidth:.2f} Mbps")
        print(f"Latency: {latency:.2f} ms")

url = "https://example.com"  # 替换为你要测试的网址
loop = asyncio.get_event_loop()
loop.run_until_complete(test_bandwidth_and_latency(url))