我创建了这个音乐机器人，我想改进我的队列命令，因为它目前不是很实用。每次我排队一首歌时，我都必须使用播放命令来播放它，但我想自动播放下一首歌，将队列命令实现到播放命令中也很酷，但我不知道如何做到这一点。你能帮忙吗？？

youtube_dl.utils.bug_reports_message = lambda: ''

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

ffmpeg_options = {
    '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)

queue = []


@client.command(name='queue', help='This command adds a song to the queue')
async def queue_(ctx, url):
    global queue

    queue.append(url)
    await ctx.send(f'`{url}` added to queue!')



@client.command(name='play', help='This command plays songs')
async def play(ctx):
    global queue

    server = ctx.message.guild
    voice_channel = server.voice_client

    async with ctx.typing():
        player = await YTDLSource.from_url(queue[0], loop=client.loop, stream=True)
        voice_channel.play(player, after=lambda e: print('Player error: %s' % e) if e else None)

    await ctx.send('**Now playing:** {}'.format(player.title))
    del(queue[0])

编辑：所以我试图做这样的事情，但它不起作用，当我尝试使用！播放时，一首歌正在播放，它不把它放在队列中，它说：ClientException：已经在播放音频。当歌曲完成时，它说：TypeError： next（）缺少2个必需的位置参数：“队列”和“歌曲”这是代码：

queue = []

def next(client, queue, song):
    if len(queue)>0:
        new_song= queue[0]
        del queue[0]
        play(client, queue, new_song)

@bot.command()
async def join (ctx):
    member = ctx.author
    if not ctx.message.author.voice:
        await ctx.send(f"{member.mention} You are not connected to a voice channel  ❌")
    else:
        channel=ctx.message.author.voice.channel
        await channel.connect()


@bot.command(help="This command plays a song.")
async def play (ctx,*args):
    server = ctx.message.guild
    voice_channel= server.voice_client
    url=""
    for word in args:
        url+=word
        url+=''

    async with ctx.typing():
        player = await YTDLSource.from_url(url ,loop=bot.loop, stream=True)
        queue.append(player)
        voice_channel.play (player, after=lambda e: next(ctx))
        
    await ctx.send(f"**Now playing:** {player.title}")