diff --git a/music/__init__.py b/music/__init__.py
index d3167a7..b7ce4fe 100644
--- a/music/__init__.py
+++ b/music/__init__.py
@@ -14,6 +14,7 @@ spotframework_logger = logging.getLogger('spotframework')
 fmframework_logger = logging.getLogger('fmframework')
 spotfm_logger = logging.getLogger('spotfm')
 
+
 def init_log(cloud=False, console=False):
     if cloud:
         import google.cloud.logging
@@ -44,5 +45,6 @@ def init_log(cloud=False, console=False):
         fmframework_logger.addHandler(stream_handler)
         spotfm_logger.addHandler(stream_handler)
 
+
 if os.environ.get('DEPLOY_DESTINATION', None) == 'PROD':
-    init_log(cloud=True)
\ No newline at end of file
+    init_log(cloud=True)
diff --git a/music/api/decorators.py b/music/api/decorators.py
index 016b135..c127357 100644
--- a/music/api/decorators.py
+++ b/music/api/decorators.py
@@ -78,6 +78,7 @@ def login_or_jwt(func):
 
     return login_or_jwt_wrapper
 
+
 def jwt_required(func):
     @functools.wraps(func)
     def jwt_required_wrapper(*args, **kwargs):
diff --git a/music/auth/auth.py b/music/auth/auth.py
index 1a79e41..ce34fe1 100644
--- a/music/auth/auth.py
+++ b/music/auth/auth.py
@@ -113,9 +113,9 @@ def jwt_token():
         else:
             expiry = config.jwt_default_length
 
-        token = generate_key(user, timeout=timedelta(seconds=expiry))
+        generated_token = generate_key(user, timeout=timedelta(seconds=expiry))
 
-        return jsonify({"token": token, "status": "success"}), 200
+        return jsonify({"token": generated_token, "status": "success"}), 200
     else:
         logger.warning(f'failed token attempt {username}')
         return jsonify({"message": 'authentication failed', "status": "error"}), 401
@@ -140,7 +140,7 @@ def register():
 
         if username is None or password is None or password_again is None:
 
-            if (request_json := request.get_json()) != None:
+            if (request_json := request.get_json()) is not None:
                 username = request_json.get('username', None)
                 password = request_json.get('password', None)
                 password_again = request_json.get('password_again', None)
diff --git a/music/auth/jwt_keys.py b/music/auth/jwt_keys.py
index 097a15c..9c7782e 100644
--- a/music/auth/jwt_keys.py
+++ b/music/auth/jwt_keys.py
@@ -1,9 +1,9 @@
-from ctypes import Union
 from datetime import timedelta, datetime, timezone
 import jwt
 from music.model.user import User
 from music.model.config import Config
 
+
 def get_jwt_secret_key() -> str:
 
     config = Config.collection.get("config/music-tools")
@@ -13,6 +13,7 @@ def get_jwt_secret_key() -> str:
 
     return config.jwt_secret_key
 
+
 def generate_key(user: User, timeout: datetime | timedelta = timedelta(minutes=60)) -> str:
 
     if isinstance(timeout, timedelta):
@@ -28,6 +29,7 @@ def generate_key(user: User, timeout: datetime | timedelta = timedelta(minutes=6
 
     return jwt.encode(payload, get_jwt_secret_key(), algorithm="HS512")
 
+
 def validate_key(key: str) -> dict:
 
     try:
@@ -37,5 +39,5 @@ def validate_key(key: str) -> dict:
 
         return decoded
 
-    except Exception as e:
+    except jwt.exceptions.PyJWTError as e:
         pass
diff --git a/music/model/config.py b/music/model/config.py
index 4f3f8cf..f7d08d9 100644
--- a/music/model/config.py
+++ b/music/model/config.py
@@ -1,5 +1,5 @@
 from fireo.models import Model
-from fireo.fields import TextField, BooleanField, DateTime, NumberField, ListField
+from fireo.fields import TextField, NumberField
 
 
 class Config(Model):