Discord.py — 尝试禁止用户后出现 UserNotFound 错误

Question

I'm trying to design a Discord bot that can ban a user across two different servers of mine if I ban them on the main server. When testing the progress so far, everything seemed to work until it came to actually banning the user. No errors came up, but the user wasn't banned. When I try to test again, I keep getting UserNotFound errors. I've restarted the bot, re-added it and the test subject user to both servers, and tried to clear the cache, but the bot still doesn't seem to recognize the user exists anymore.

This is the code for the ban command:

async def totalban(ctx, userID):
    if ctx.message.author.guild_permissions.administrator: # check if admin
        if ctx.guild.id == GUILD_ID: # if admin, check if right guild
            await ctx.send('Confirmed administrator on proper server.')
            time.sleep(1)
            global TARGET_ID
            TARGET_ID = int(userID) # record target user ID
            converter = UserConverter()
            user = await converter.convert(ctx, userID) # convert arg to User
            username = user.name + '#' + user.discriminator # easy reference in Name#1234 format
            global TARGET_USERNAME
            TARGET_USERNAME = username
            await ctx.send('User ID ' + userID + ' corresponds to ' + username + '.')
            time.sleep(1)
            await ctx.send('To confirm ban of ' + username + ', type **!confirmtotalban ' + username + '** now.')
            global CANCONFIRMBAN
            CANCONFIRMBAN = True # allow !confirmtotalban command to function
        else:
            await ctx.send('Cannot run command from this server.')
    else:
        await ctx.send('User unauthorized to run command.')

And this is is the function I ran when trying to ban the test account:

(If it's any help, I never had UserNotFound errors before running this code.)

async def banloop(ctx):
    global TARGET_ID
    for guild in ctx.bot.guilds:
        await guild.ban(TARGET_ID)

And here's the traceback:

Traceback (most recent call last):
  File "...\Programs\Python\Python38\lib\site-packages\discord\ext\commands\bot.py", line 903, in invoke
    await ctx.command.invoke(ctx)
  File "...\Programs\Python\Python38\lib\site-packages\discord\ext\commands\core.py", line 859, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "...\Programs\Python\Python38\lib\site-packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "...\example_bot.py", line 41, in totalban
    user = await converter.convert(ctx, userID) # convert arg to User
  File "...\Programs\Python\Python38\lib\site-packages\discord\ext\commands\converter.py", line 194, in convert
    raise UserNotFound(argument)
discord.ext.commands.errors.UserNotFound: User "165995850303012864" not found.

Thanks in advance for any help you can offer, and let me know if you need any more information out of me.

Answer 1

 TARGET_ID = int(userID) # record target user ID

If I understand it right, you convert userID to integer here. However,

discord.ext.commands.errors.UserNotFound: User "165995850303012864" not found.

Target ID shows up as a string on the error. You may want to check it.

Answer 2

The error in the traceback is complaining about the UserConverter.convert() call in your totalban() function which produces the UserNotFound error. Because this function call causes the error, it means that CANCONFIRMBAN will never be set to true which would explain why no one ends up getting banned.

According to the documentation , UserConverter.convert() accepts a string argument. Are you certain that the userID argument in totalban() is a string and not an integer value?

There is also this note on how the UserConverter is able to convert values to a User object:

All lookups are via the global user cache.

• Are you sure that the internal cache of the bot is ready?

• Is fetch_offline_members set to False? This greatly limits the functionality of bots and can make it impossible to do many things.

• Have you tried calling the function with name#discrim instead of the user ID?

It is difficult to help solve the problem with certainty without more information.