fixed bot_base_cog and made an example cog

cogs/base_cog/bot_base_cog.py

@@ -6,12 +6,14 @@ import logging
 class BotBaseCog(commands.Cog):
     def __init__(self, bot):
         self.bot = bot
-        self.cog_name = __name__
+        self.http_session = self.create_aiohttp_session()
+        self.logger = logging.getLogger("bot")
+
+    def setup(self, name):
+        self.cog_name = name.lower()
         self.working_dir = f"tmp/{self.cog_name}"
         self.data_dir = f"data/{self.cog_name}"
         self.folder_setup()
-        self.http_session = self.create_aiohttp_session()
-        self.logger = logging.getLogger("bot")
 
     def create_aiohttp_session(self):
         return aiohttp.ClientSession()

examples/cog_example.py

@@ -0,0 +1,16 @@
+from discord.ext import commands
+from cogs.base_cog.bot_base_cog import BotBaseCog
+
+class Ping(BotBaseCog):
+
+    def __init__(self, bot):
+        super().__init__(bot)
+        self.setup(__class__.__name__)
+
+    @commands.command()
+    async def ping(self, ctx):
+        await ctx.send("pong")
+        self.logger.info(f"Ping command called by {ctx.author.name}")
+
+async def setup(bot):
+    await bot.add_cog(Ping(bot))