Help Command for Discord.py Cogs-Based Bot

help.py

    @commands.command()
    async def help(self, ctx, *, category=None):
        """This command!"""
        if category is None:
            embed = discord.Embed(
                title="Category Listing and Uncatergorized Commands",
                description="""Use `help *category*` to find out more about them!""",
                colour=self.bot.main_colour
            )

            cogs_desc = ""
            for cog in self.bot.cogs:
                cogs_desc += f"`{cog}` - {self.bot.cogs[cog].__doc__}\n"

            embed.add_field(
                name="Categories",
                value=cogs_desc,
                inline=False
            )

            cmds = [
                cmd for cmd in self.bot.walk_commands()
                if not (cmd.cog_name or cmd.hidden)
            ]
            if len(cmds) > 0:
                cmds_desc = ""
                for cmd in cmds:
                    sig = f"{cmd.name} {cmd.signature}".strip()
                    cmds_desc += f"`{sig}` - {cmd.help}\n"
                embed.add_field(
                    name="Uncatergorized Commands",
                    value=cmds_desc,
                    inline=False
                )
        else:
            bot_cogs = {
                name.lower(): cog
                for name, cog in self.bot.cogs.items()
            }
            if category.lower() in bot_cogs.keys():
                embed = discord.Embed(
                    title=f"{list(self.bot.cogs.keys())[list(self.bot.cogs.values()).index(bot_cogs[category.lower()])]} Command Listing",
                    description=f"{bot_cogs[category.lower()].__doc__}",
                    colour=self.bot.main_colour
                )

                cmds = list(bot_cogs[category.lower()].walk_commands())

                if len(cmds) > 0:
                    cmds_desc = ""
                    for cmd in cmds:
                        sig = f"{cmd.name} {cmd.signature}".strip()
                        cmds_desc += f"`{sig}` - {cmd.help}\n"
                    embed.add_field(
                        name="Commands",
                        value=cmds_desc,
                        inline=False
                    )
                else:
                    embed.add_field(
                        name="No Commands",
                        value="Maybe they haven't been added yet?",
                        inline=False
                    )
            else:
                embed = discord.Embed(
                    title="Error!",
                    description=f"The category `{category}` doesn't even exist!",
                    colour=self.bot.main_colour
                )
        await ctx.send(embed=embed)