tags.py 文件源码

def can_use_box():
    def pred(ctx):
        if ctx.guild is None:
            return True
        if ctx.author.id == ctx.bot.owner_id:
            return True

        has_perms = ctx.channel.permissions_for(ctx.author).manage_messages
        if not has_perms:
            raise UnableToUseBox()

        return True
    return commands.check(pred)

# The tag data is heavily duplicated (denormalized) and heavily indexed to speed up
# retrieval at the expense of making inserts a little bit slower. This is a fine trade-off
# because tags are retrieved much more often than created.