使用discord.py开发YouTube音乐机器人遇OSError错误求助

开发了一个具备YouTube音乐播放功能的discord.py机器人，机器人可正常加入语音频道，但执行playy命令时报错：

Command 'playy' raised an exception: OSError: ERROR: Unable to extract uploader id; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

原youtube-dl网站已无法访问，尝试重装、添加系统环境变量等方法后问题依旧。相关代码如下：

@tree.command(name = "playy", description = "Frančesko začne hrát vybranou hudbu!y")
async def test(interaction: discord.Interaction, id: str):

        search = "morpheus tutorials discord bot python"
        channel_id = int(id)
        voice_channel = client.get_channel(channel_id)
        g = await voice_channel.connect()

        search = search.replace(" ", "+")
        html = urllib.request.urlopen("https://www.youtube.com/results?search_query=" + search)
        video_ids = re.findall(r"watch\?v=(\S{11})", html.read().decode())
        song = pafy.new(video_ids[0])
        audio = song.getbestaudio()
        source = FFmpegPCMAudio(audio.url, **FFMPEG_OPTIONS)
        g.play(source)

核心问题是youtube-dl已停止维护，且pafy依赖的youtube-dl无法正常工作，需替换为活跃维护的yt-dlp并调整代码逻辑：

• 安装必要依赖
  卸载旧的youtube-dl和pafy，安装yt-dlp及配套库：

  pip uninstall youtube-dl pafy -y
  pip install yt-dlp
  

• 替换代码逻辑
  移除pafy和手动解析YouTube搜索结果的逻辑，改用yt-dlp直接处理搜索与音频提取，调整后的代码示例：

  import yt_dlp
  from discord import FFmpegPCMAudio
  
  # yt-dlp配置
  YDL_OPTIONS = {
      'format': 'bestaudio/best',
      'noplaylist': True,
      'quiet': True,
      'extractaudio': True,
      'audioformat': 'mp3',
  }
  
  FFMPEG_OPTIONS = {
      'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5',
      'options': '-vn'
  }
  
  @tree.command(name = "playy", description = "Frančesko začne hrát vybranou hudbu!y")
  async def test(interaction: discord.Interaction, id: str):
      # 连接语音频道
      channel_id = int(id)
      voice_channel = client.get_channel(channel_id)
      voice_client = await voice_channel.connect()
  
      # 搜索并获取音频流
      search_query = "morpheus tutorials discord bot python"
      with yt_dlp.YoutubeDL(YDL_OPTIONS) as ydl:
          info = ydl.extract_info(f"ytsearch:{search_query}", download=False)['entries'][0]
          audio_url = info['url']
          source = FFmpegPCMAudio(audio_url, **FFMPEG_OPTIONS)
  
      # 启动播放
      voice_client.play(source)
      await interaction.response.send_message(f"正在播放: {info['title']}")
  

• 关键调整说明

  • 用ytsearch:前缀让yt-dlp直接处理搜索请求，无需手动解析HTML提取视频ID
  • 给FFmpeg添加重连参数，避免播放中途因网络问题中断
  • 完全移除对pafy的依赖，直接通过yt-dlp获取音频流地址

内容的提问来源于stack exchange，提问作者TheLiveYT