a.）使用websockets库（如果你真的想的话，和requests一起）

import asyncio
import requests
import websockets

async def send_message(message):
    async with websockets.connect("ws://echo.websocket.org") as websocket:
        await websocket.send(message)
        response = await websocket.recv()
        return response

loop = asyncio.get_event_loop()
response = loop.run_until_complete(send_message("Hello, World!"))
print(response)

B.）改用aiohttp

import aiohttp
import asyncio

async def send_message(message):
    async with aiohttp.ClientSession() as session:
        async with session.ws_connect("ws://echo.websocket.org") as ws:
            await ws.send_str(message)
            response = await ws.receive()
            return response.data

loop = asyncio.get_event_loop()
response = loop.run_until_complete(send_message("Hello, World!"))
print(response)

c.）使用requests_html

from requests_html import AsyncHTMLSession

async def send_message(message):
    async with AsyncHTMLSession() as session:
        websocket = await session.ws_connect("ws://echo.websocket.org")
        await websocket.send_str(message)
        response = await websocket.receive()
        return response.text

loop = asyncio.get_event_loop()
response = loop.run_until_complete(send_message("Hello, World!"))
print(response)