Python中是否有可以在直播平台群发弹幕的库

滚

有，danmu库（也叫python-danmu）可以搞定。它支持B站、斗鱼、虎牙这些主流平台。不过现在很多平台都加了反爬，直接发弹幕可能被封，你得注意。

核心就两步：连上WebSocket，然后按平台协议发数据包。下面是个B站的例子，用websockets和aiohttp：

import asyncio
import websockets
import json
import time

async def send_bilibili_danmu(room_id, cookie):
    # 1. 先拿真实WebSocket地址（B站有个弹幕服务器列表）
    import aiohttp
    async with aiohttp.ClientSession() as session:
        async with session.get(f'https://api.live.bilibili.com/xlive/web-room/v1/index/getDanmuInfo?id={room_id}') as resp:
            data = await resp.json()
            host_list = data['data']['host_list']
            ws_host = host_list[0]['host']  # 取第一个服务器
            ws_port = host_list[0]['wss_port']
            token = data['data']['token']
    
    # 2. 连接WebSocket
    uri = f"wss://{ws_host}:{ws_port}/sub"
    async with websockets.connect(uri) as websocket:
        # 3. 发送认证包（B站协议）
        auth_params = {
            "uid": 0,
            "roomid": int(room_id),
            "protover": 3,
            "platform": "web",
            "type": 2,
            "key": token
        }
        await websocket.send(json.dumps(auth_params))
        
        # 4. 心跳包保持连接
        async def heartbeat():
            while True:
                await websocket.send('[object Object]')  # B站心跳包就是这字符串
                await asyncio.sleep(30)
        
        # 5. 发弹幕（需要先认证，这里简化了）
        # 实际要先收服务器消息，拿到auth回复后才能发
        msg = "测试弹幕"
        danmu_packet = {
            "cmd": "SEND_MSG",
            "msg": msg
        }
        await websocket.send(json.dumps(danmu_packet))
        
        # 启动心跳
        asyncio.create_task(heartbeat())
        
        # 保持连接
        while True:
            await asyncio.sleep(1)

# 使用
room_id = "房间号"
cookie = "你的B站cookie"
asyncio.run(send_bilibili_danmu(room_id, cookie))

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