fix: since when str can't use is/is not

commands.py

@@ -106,7 +106,7 @@ async def info_command(update: Update, context: ContextTypes.DEFAULT_TYPE) -> No
             f"{html_parser.hyperlink("»", f"http://{app.hostname}/media_assets/{post_data['media_asset']['id']}")}"
         )
         m.append(
-            f"Source: {post_data['source'] if post_data['source'] is not "" else "🚫"}"
+            f"Source: {post_data['source'] if post_data['source'] != "" else "🚫"}"
         )
         m.append(f"Rating: {format_rating(post_data['rating'])}")
         m.append(

extensions.py

@@ -6,14 +6,14 @@ from config import app
 
 
 def humanize_tags_from_json(value: str, default: str) -> str:
-    if value is not "":
+    if value != "":
         return ", ".join([re.sub("_\\(.*", "", t) for t in value.split()])
     return default
 
 
 def humanize_filesize(value: int) -> str:
     for unit in ["B", "KiB", "MiB", "GiB"]:
-        if value < 1024 or unit is "GiB":
+        if value < 1024 or unit == "GiB":
             break
         value /= 1024
     return f"{value:.2f} {unit}"

main.py

@@ -35,7 +35,7 @@ def get_token() -> str:
     if os.getenv("BOT_TOKEN") is not None:
         return os.getenv("BOT_TOKEN")
 
-    if general.token is not "":
+    if general.token != "":
         return general.token
 
     print(