from discord.ext import commands


class Test_Cog(commands.Cog):
    def __init__(self, bot):
        self.bot = bot  # defining bot as global var in class

    @commands.Cog.listener()  # this is a decorator for events/listeners
    async def on_ready(self):
        print('Bot is ready!.')

    @commands.command()  # this is for making a command
    async def ping(self, ctx):
        await ctx.send(f'Pong! {round(self.bot.latency * 1000)}')


def setup(bot):  # a extension must have a setup function
    bot.add_cog(Test_Cog(bot))  # adding a cog
