__init__.py

from .redchess import RedChess

def setup(bot):
    bot.add_cog(RedChess(bot))

redchess.py

from discord.ext import commands

class RedChess:
        """Play Chess with friends or against Red!"""

        async def showHelp(self, ctx):
            await ctx.send("```\nWIP```")

        @commands.command()
        async def chess(self, ctx, arg=None):
            """Shows help for Chess."""
            if arg != None:
                if isinstance(arg, str):
                    if arg == "help":
                        self.showHelp(ctx)
            #await ctx.send("Ayy lmao")