Discord.py-Rewrite当存在未知命令或其他错误时发送错误消息 [英] Discord.py-Rewrite Sending an Error message when there is an unknown command or other error

问题描述

我希望能够发送类似 await ctx.send(错误:未知命令.请-help接受可接受的命令." 之类的消息，或类似的内容(仅供参考，我不问如何删除 Help已经是一个已定义的函数或类似的东西.)；但是我不知道如何为不是命令的东西发出错误消息，例如命令出现错误，例如他们未放置任何参数，然后我为该 @ command.error 犯了一个错误，然后我对其进行了定义.但是我不确定如何如果可能，是否有办法检查代码底部的错误是什么?如是否需要管理员，但他们丢失了该错误，然后 if isinstance(error，commands.MissingPermissions):还是如果他们需要允许服务器成员向他们发送消息，那么也许还有其他事情需要检查吗?

I want to be able to send a message like await ctx.send("Error: Unknown command. Do -help for acceptable commands." or something like that (FYI, I'm not asking how to remove the Help is already a defined function or something like that.); But I don't know how to make an error message for something that isn't a command, Like if there is an error with a command like they didn't put any parameters then I'm able to make an error for that @command.error then i define it. But I'm not sure how to start this. And if possible, would there be a way where at the bottom of the code, is checked what the error is? like if they need admin but they are missing it then if isinstance(error, commands.MissingPermissions): or if they need to allow server members to message them, maybe it would have a different thing to check?

TLDR；我希望能够在我的代码的底部有一个东西来检查是否存在错误，如果存在，是否是由命令所引起的错误(然后它用 ctx.send 声明某些内容))，但如果是由于缺少管理员或角色而引起的，或者可能是由于他们需要允许服务器成员在隐私设置中为dm造成的，则它还会说些什么.我不想为每个命令都定义一个错误.

TLDR; I want to be able to have at the bottom of my code a thing that checks if there was an error and if so, if its caused by the command not existing (then it says something with ctx.send) but if its caused by missing admin or missing role, or possibly them needing to allow server members to dm them in privacy settings, then it also says something. I don't want to have to define an error for every command.

我还有一条命令要求数字起作用，并且我想要一段代码来检查其是否为整数，如果不是，则给出错误信息，提示它必须为数字.然后检查其是否为正数，如果不是，则给出错误.

I also have a command that requires numbers to work, and i want a block of code that checks if its an integer, and if not, gives an error saying that it needs to be a number. Then checks if its a positive number, and if not, gives an error.

推荐答案

Discord.py具有

Discord.py has a on_command_error event, which takes the error as argument. You can use it this way:

@bot.event
async def on_command_error(ctx, error):
    await ctx.send(f"An error occured: {str(error)}")

以下是每个不和谐的证据.
如果您希望为每个错误提供自定义消息，则可以通过以下方式做到这一点:

Here's a list of every discord exeptions.
If you want a custom message for each error, you can do it this way:

@bot.event
async def on_message_error(ctx, error):
    if isinstance(error, discord.ext.commands.errors.CommandNotFound):
        await ctx.send("Unknown command")

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