Discord.Py上的高级帮助命令？

Question

我知道我是新来的，但我有个问题要问你：

如果您想用Python编写一个带有特殊齿轮的Discord机器人，并用以下命令替换默认的help命令，该怎么办

@commands.command(pass_context=True)
async def help(self,ctx,*cog:str):
    """Gives you info on my cogs *and* their commands."""
    if not cog:
        halp=discord.Embed(title='Cog Listing and Uncatergorized Commands',
                           description='Use `!help *cog*` to find out more about them!')
        cogs_desc = ''
        for x in self.bot.cogs:
            cogs_desc += ('{} - {}'.format(x,self.bot.cogs[x].__doc__)+'\n')
        halp.add_field(name='Cogs',value=cogs_desc[0:len(cogs_desc)-1])
    else:
        halp=discord.Embed(title='{cog} Command Listing')
        for x in self.bot.cogs[cog]:
            halp.add_field(name=x,value=x.__doc__)

    await self.bot.whisper(embed=halp)

…命令会发送机器人cog的信息，但拒绝提供特定cog命令的信息，并提供以下信息：

    Ignoring exception in command help
Traceback (most recent call last):
  File "/home/pi/.local/lib/python3.5/site-packages/discord/ext/commands/core.py", line 50, in wrapped
    ret = yield from coro(*args, **kwargs)
  File "/home/pi/Documents/Coding/Python/AwesomeDiscordBot/cogs/info.py", line 49, in help
    for x in self.bot.cogs[cog]:
KeyError: ('Info',)

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/pi/.local/lib/python3.5/site-packages/discord/ext/commands/bot.py", line 846, in process_commands
    yield from command.invoke(ctx)
  File "/home/pi/.local/lib/python3.5/site-packages/discord/ext/commands/core.py", line 374, in invoke
    yield from injected(*ctx.args, **ctx.kwargs)
  File "/home/pi/.local/lib/python3.5/site-packages/discord/ext/commands/core.py", line 54, in wrapped
    raise CommandInvokeError(e) from e
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: KeyError: ('Info',)

您将如何修复它，以便可以使用您的Discord机器人！帮助命令获取有关cogs和命令的信息

另外，我正在Raspberry Pi上使用Python3.5，我还希望在主帮助嵌入中包含未分类的命令

Answer 1

不应只需删除默认的help命令并生成一个名为help的命令。您应该子类commands.HelpCommand

以下是一个有用的教程： https://gist.github.com/InterStella0/b78488fb28cadf279dfd3164b9f0cf96