Discord bot问题“缺少必需的参数”python

Question

我有问题。我认为这段代码写得很好，机器人启动了一切，但是当我去执行逗号play时，我得到了一个错误。

@bot.command(name='play', aliases=['sing','p'], description="streams music")
async def play_(ctx, self, *, search: str):
    #async def play_(ctx, message, self, *, search: str):
    """Request a song and add it to the queue.
    This command attempts to join a valid voice channel if the bot is not already in one.
    Uses YTDL to automatically search and retrieve a song.
    Parameters
    ------------
    search: str [Required]
        The song to search and retrieve using YTDL. This could be a simple search, an ID or URL.
    """
    await ctx.trigger_typing()

    vc = ctx.voice_client

    if not vc:
        await ctx.invoke(self.connect_)

    player = self.get_player(ctx)

    # If download is False, source will be a dict which will be used later to regather the stream.
    # If download is True, source will be a discord.FFmpegPCMAudio with a VolumeTransformer.
    source = await YTDLSource.create_source(ctx, search, loop=self.bot.loop, download=False)

    await player.queue.put(source)

错误如下：

    discord.ext.commands.errors.MissingRequiredArgument: search is a required argument that is missing.

而且我不知道该怎么做，因为我已经尝试改变位置，但是如果有人知道它是什么，就会不断出现错误，请告诉我

Answer 1

无论您的search 参数是什么，它都不起作用。 discord.py库调用命令时，调用命令如下：

command(context, word1, word2, word3)

因此，如果它会调用您的函数，则会出现命名错误，因为 discord 永远不会将 search 参数传递给您的函数。例如：

@bot.command(name='play', aliases=['sing','p'], description="streams music")
async def play_(ctx, self, *, search: str):
    [...]

-播放再见

play_(context, "see", "you", "again")

->Error: search is a required argument that is missing

---

相反，您的函数应该如下所示：

@bot.command(name='play', aliases=['sing','p'], description="streams music")
async def play_(ctx, *search):
    [...]

Answer 2

为什么你有self作为参数？如果您使用 cog，请将其放在 ctx 之前。如果不是，请删除该参数。您的搜索词作为self 参数传递。