从Youtube用Bot播放音乐而不下载文件不起作用

Question

#Play_music

ytdl_format_options = {
     'format': 'bestaudio/best',
     'outtmpl': '%(extractor)s-%(id)s-%(title)s.%(ext)s',
     'restrictfilenames': True,
     'noplaylist': False,
     'nocheckcertificate': True,
     'ignoreerrors': False,
     'logtostderr': False,
     'quiet': True,
     'no_warnings': True,
     'default_search': 'auto',
     # bind to ipv4 since ipv6 addresses cause issues sometimes
     'source_address': '0.0.0.0'
 }

 FFMPEG_OPTIONS = {
     'before_options': '-reconnect 1 -reconnect_streamed 1 -reconnect_delay_max 5', 'options': '-vn'}

 ytdl = youtube_dl.YoutubeDL(ytdl_format_options)
      
      
 class YTDLSource(discord.PCMVolumeTransformer):
     def __init__(self, source, *, data, volume=0.5):
         super().__init__(source, volume)
 
         self.data = data
      
         self.title = data.get('title')
         self.url = data.get('url')

     @classmethod
     async def from_url(cls, url, *, loop=None, stream=False):
         loop = loop or asyncio.get_event_loop()
         data = await loop.run_in_executor(None, lambda: ytdl.extract_info(url, download=not stream))

         if 'entries' in data:
             # take first item from a playlist
             data = data['entries'][0]
      
         filename = data['url'] if stream else ytdl.prepare_filename(data)
              return cls(discord.FFmpegPCMAudio(filename, **ffmpeg_options), data=data)
      
      
 @client.command()
 async def play(ctx, url):
     ydl_opts = {'format': 'bestaudio'}
     with youtube_dl.YoutubeDL(ydl_opts) as ydl:
         info = ydl.extract_info(video_url, download=False)
         URL = info['formats'][0]['url']
     voice = get(self.bot.voice_clients, guild=ctx.guild)
     voice.play(discord.FFmpegPCMAudio(URL, **FFMPEG_OPTIONS))
 #!play (link)

音乐不播放，cmd（无，带“ video_url”）写道：正在下载网页。 没有语法错误。尝试更改以下行：info = ydl.extract_info（video_url，下载= False）（将video_url替换为url，并将（url_link）替换为引号前的字母f，但无效）。