discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: 'NoneType' object has no attribute 'qualified_name'

Question

I am making a custom help command for my bot and here is my code.

class customhelpcommand(commands.HelpCommand):

    def __init__(self):
        super().__init__()
    
    async def send_bot_help(self, mapping):
        for cog in mapping:
            await self.get_destination().send(f"{cog.qualified_name}: {[command.name for command in mapping(cog)]}")
     

    async def send_cog_help(self, cog):
        await self.get_destination().send(f"{cog.qualified_name}: {[command.name for command in cog.get_commands()]}")

it gives the error : AttributeError: 'NoneType' object has no attribute 'qualified_name' — Alcatraz b312
– Alcatraz b312, Commented Dec 24, 2021 at 16:52
you first check the object (e.g. if cog is not None: ...) then you should move further. — Gautam Jangid
– Gautam Jangid, Commented Dec 24, 2021 at 17:01

Ratery · Accepted Answer · 2021-12-24 18:28:15Z

3

Some cogs in your mapping might be None. Therefore you can simply check it:

async def send_bot_help(self, mapping):
    for cog in mapping:
        if cog is not None:
            await self.get_destination().send(f"{cog.qualified_name}: {[command.name for command in mapping(cog)]}")

answered Dec 24, 2021 at 18:28

Ratery

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