change tags formatting

main.py

@@ -10,7 +10,7 @@ from io import BytesIO
 from pathlib import Path
 from tempfile import TemporaryDirectory
 from time import time
-from typing import List
+from typing import List, Iterable
 
 import boto3
 import ffmpeg
@@ -38,6 +38,10 @@ dp = Dispatcher()
 ChatFilter = F.chat.id.in_(set(map(int, os.environ['USERS'].split(','))))
 
 
+def format_tags(tags: Iterable[str]):
+    return ' '.join(f'#{tag}' for tag in tags) or 'None'
+
+
 async def send_post(post: E621Post, tag_list: List[str]):
     await bot.send_chat_action(int(os.environ['SEND_CHAT']), action=ChatAction.TYPING)
     monitored_tags = set(post.tags.flatten()) & set(tag_list)
@@ -45,10 +49,10 @@ async def send_post(post: E621Post, tag_list: List[str]):
     character_tags = post.tags.character
     copyright_tags = post.tags.copyright
     caption = '\n'.join(l for l in [
-        f'Monitored tags: <b>{" ".join(monitored_tags) or "None"}</b>',
+        f'Monitored tags: <b>{format_tags(monitored_tags) or "None"}</b>',
-        artist_tags and f'Artist: <b>{" ".join(artist_tags)}</b>',
+        artist_tags and f'Artist: <b>{format_tags(artist_tags)}</b>',
-        character_tags and f'Character: <b>{", ".join(character_tags)}</b>',
+        character_tags and f'Character: <b>{format_tags(character_tags)}</b>',
-        copyright_tags and f'Copyright: <b>{", ".join(copyright_tags)}</b>',
+        copyright_tags and f'Copyright: <b>{format_tags(copyright_tags)}</b>',
         f'\nhttps://e621.net/posts/{post.id}'
     ] if l)
     if post.file.url: