Use logging module for informational prints

ahtcg_bot.py

@@ -4,6 +4,7 @@ import configargparse
 from datetime import datetime
 import json
 import re
+import logging
 from pathlib import Path
 
 import discord
@@ -56,11 +57,11 @@ class ArkhamDBUpdater(commands.Bot):
                 json.dump(list(self.channel_list), f)
 
     async def on_ready(self) -> None:
-        print(f"Logged in as {self.user} (ID: {self.user.id})")
-        print("Enabled on servers:")
+        logging.info(f"Logged in as {self.user} (ID: {self.user.id})")
+        logging.info("Enabled on servers:")
         async for guild in self.fetch_guilds(limit=150):
-            print("  -", guild.name)
-        print("------")
+            logging.info(f"  - {guild.name}")
+        logging.info("------")
 
         self.arkhamdb_monitor.start()
 
@@ -109,7 +110,7 @@ class ArkhamDBUpdater(commands.Bot):
         return status
 
     async def update_channel_latest_decks(self, channel: discord.TextChannel) -> None:
-        print(f"Running update in channel {channel.guild} - {channel.name}")
+        logging.info(f"Running update in channel {channel.guild} - {channel.name}")
         async with channel.typing():
             deck_ids = await self.gather_deck_ids(channel)
             latest_decks = await self.arkhamdb_client.get_latest_decks(deck_ids)
@@ -200,8 +201,27 @@ def main():
         help="Discord API token",
         env_var="DISCORD_TOKEN",
     )
+    parser.add(
+        "-d",
+        "--debug",
+        help="Print lots of debugging statements",
+        action="store_const",
+        dest="loglevel",
+        const=logging.DEBUG,
+        default=logging.WARNING,
+    )
+    parser.add_argument(
+        "-v",
+        "--verbose",
+        help="Be verbose",
+        action="store_const",
+        dest="loglevel",
+        const=logging.INFO,
+    )
     args = parser.parse_args()
 
+    logging.basicConfig(level=args.loglevel)
+
     bot = ArkhamDBUpdater(
         channel_list_file=args.channel_list, command_prefix="!arkhamdb "
     )