Question

Discord.py重写

在我的代码段中，我试图先运行一个简单的check命令，然后再不实际地运行实际命令：

@command.before_invoke
async def check_perms(self, ctx): # being defined in a class
    # if 'administrator' in bot.permissions <<< My goal
        # pass and let the following command run
    # else:
        # Make the bot say it can't run an admin only action and raise a custom exception

如何在运行命令之前检测机器人本身是否具有管理员权限？我不想在每个命令中都放置try / except块。

Answer 1

您可以使用内置的bot_has_permissions：

from discord.ext.commands import bot_has_permissions, Bot, BotMissingPermissions

class CustomException(Exception):
    pass

bot = Bot('!')

@bot.command()
@bot_has_permissions(administrator=True)
async def example(ctx):
    ...

@example.error
async def error_handler(ctx, error):
    if isinstance(error, BotMissingPermissions):
        await ctx.send(f"I need the permissions: {' '.join(error.missing_perms)}")
        raise CustomException() from error
    else:
        raise error

discord.py重写-通过@ command.before_invoke装饰器检查机器人是否具有特定权限

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