CODEWITHSUNDEEP
pythonpython-3.xdiscorddiscord.py
Theo
Theo

Reputation: 623

Discord.py CheckError every time check is false

Whenever a check returns false, I get this error:

Ignoring exception in command checkme:
Traceback (most recent call last):
  File "/home/ade/.local/lib/python3.6/site-packages/discord/ext/commands/bot.py", line 892, in invoke
    await ctx.command.invoke(ctx)
  File "/home/ade/.local/lib/python3.6/site-packages/discord/ext/commands/core.py", line 790, in invoke
    await self.prepare(ctx)
  File "/home/ade/.local/lib/python3.6/site-packages/discord/ext/commands/core.py", line 744, in prepare
    raise CheckFailure('The check functions for command {0.qualified_name} failed.'.format(self))
discord.ext.commands.errors.CheckFailure: The check functions for command checkme failed.

Even with a check where its clearly not some other error with the check, such as this basic always-false command, I get the error. While it doesn't actually disturb the code, I was hoping to get a clean console that information/real errors could be printed to, and that wouldnt be clogged with this error. Is there a way to not raise this error?

def returnfalse(ctx):
    return False

@bot.command(name='testcommand')
@commands.check(returnfalse)
def testcommand(ctx):
    pass

Upvotes: 0

Views: 2171

Answers (1)

BManRL
BManRL

Reputation: 131

If you are looking to have the check failure dismissed every time, I would suggest setting up an on_command_error event. In the main file:

@bot.event
async def on_command_error(ctx, error):
    if isinstance(error, commands.errors.CheckFailure):
        pass
    else:
        print('Ignoring exception in command {}:'.format(ctx.command), file=sys.stderr)
        traceback.print_exception(type(error), error, error.__traceback__, file=sys.stderr)

Be sure to import traceback and sys. You will get every other error as intended, put the CheckFailure will be passed. If you remove the print and traceback from the else statement, the on_command_error will eat all of your errors.

Upvotes: 1

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