Discord.py discord.NotFound异常

Question

所有人。我一直在为我的不和谐服务器开发一些机器人，在其中一个问题上我遇到了一个我似乎无法解决的问题。我有一个名为'info‘的命令，本质上，这个命令显示一些关于所需用户的信息。当我调用命令?info [user]时，它工作得很好，直到我故意请求一个不存在的用户的信息来测试我已经存在的异常。在这里‘

@laugh.command(pass_context=True)
async def info(ctx, user: discord.Member = None):
    if ctx.message.channel.name != "admin":
        await laugh.send_message(ctx.message.author, "Sorry, you need to be in a text channel called 'admin' for that.")
        return
    if not ctx.message.author.server_permissions.administrator:
        return
    if not user:
        user = ctx.message.author
    try:
        minfo = ("""
{0}'s ID is: {1}
{0}'s status is: {2}
{0}'s highest role is: {3}
{0} joined at: {4}""".format(user.name, user.id, user.status, user.top_role, user.joined_at))
        embed = discord.Embed(title = user.name, description = minfo, color = 0x00D2FF)
        await laugh.say(embed = embed)
    except discord.NotFound:
        await laugh.say("User not found.")

当我运行这段代码并将一个不存在的用户作为参数时，我的异常不起作用，相反，我将这个输出发送到我的控制台：

Ignoring exception in command info
Traceback (most recent call last):
  File "C:\Users\Matthew\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\ext\commands\bot.py", line 846, in process_commands
    yield from command.invoke(ctx)
  File "C:\Users\Matthew\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\ext\commands\core.py", line 367, in invoke
    yield from self.prepare(ctx)
  File "C:\Users\Matthew\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\ext\commands\core.py", line 345, in prepare
    yield from self._parse_arguments(ctx)
  File "C:\Users\Matthew\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\ext\commands\core.py", line 304, in _parse_arguments
    transformed = yield from self.transform(ctx, param)
  File "C:\Users\Matthew\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\ext\commands\core.py", line 223, in transform
    raise e
  File "C:\Users\Matthew\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\ext\commands\core.py", line 221, in transform
    return (yield from self.do_conversion(ctx, converter, argument))
  File "C:\Users\Matthew\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\ext\commands\core.py", line 184, in do_conversion
    return instance.convert()
  File "C:\Users\Matthew\AppData\Local\Programs\Python\Python36-32\lib\site-packages\discord\ext\commands\converter.py", line 100, in convert
    raise BadArgument('Member "{}" not found'.format(self.argument))
discord.ext.commands.errors.BadArgument: Member "test" not found

我看过无数的例子和论坛帖子，我所获得的唯一的知识就是错误的来源是在async def info(ctx, user: discord.Member = None):中，对于我能做什么有什么想法吗？

Answer 1

命令的错误处理有点奇怪。当为参数user指定转换器时，该转换将在命令coroutine正文之外进行。要处理它，您必须编写一个错误处理程序coroutine，并将其与所述命令关联。

@laugh.command(pass_context=True)
async def info(ctx, user: discord.Member = None):
    if ctx.message.channel.name != "admin":
        await laugh.send_message(ctx.message.author, "Sorry, you need to be in a text channel called 'admin' for that.")
        return
    if not ctx.message.author.server_permissions.administrator:
        return
    if not user:
        user = ctx.message.author
    minfo = ("""
{0}'s ID is: {1}
{0}'s status is: {2}
{0}'s highest role is: {3}
{0} joined at: {4}""".format(user.name, user.id, user.status, user.top_role, user.joined_at))
    embed = discord.Embed(title = user.name, description = minfo, color = 0x00D2FF)
    await laugh.say(embed = embed)

@info.error
async def info_error(ctx, error): # This might need to be (error, ctx), I'm not sure
    if isinstance(error, commands.BadArgument):
        await laugh.say('I could not find that user')

您可以在discord.ext.commands中阅读错误处理程序和其余重写分支的文档。模块的文档。

如果您要使用命令扩展做大量工作，那么现在转换您的代码以便您能够使用准确的文档可能是有意义的。