diff --git a/ReportState.py b/ReportState.py
index c1263c0..ffdfd28 100644
--- a/ReportState.py
+++ b/ReportState.py
@@ -22,7 +22,7 @@ def generate_jwt(service_account):
 def get_access_token(signed_jwt):
     url = 'https://accounts.google.com/o/oauth2/token'
     headers = {'Content-Type': 'application/x-www-form-urlencoded'}
-    data = 'grant_type=urn%3Aietf%3Aparams%3Aoauth%3Agrant-type%3Ajwt-bearer&assertion=' + signed_jwt
+    data = f'grant_type=urn%3Aietf%3Aparams%3Aoauth%3Agrant-type%3Ajwt-bearer&assertion={signed_jwt}'
     response = requests.post(url, headers=headers, data=data)
 
     if response.status_code == requests.codes.ok:
@@ -35,13 +35,10 @@ def get_access_token(signed_jwt):
 
 def report_state(access_token, report_state_file):
     url = 'https://homegraph.googleapis.com/v1/devices:reportStateAndNotification'
-    headers = {
-        'X-GFE-SSL': 'yes',
-        'Authorization': 'Bearer ' + access_token
-    }
+    headers = {'X-GFE-SSL': 'yes', 'Authorization': f'Bearer {access_token}'}
     data = report_state_file
     response = requests.post(url, headers=headers, json=data)
-    print('Response: ' + response.text)
+    print(f'Response: {response.text}')
 
     return response.status_code == requests.codes.ok
 
@@ -51,9 +48,7 @@ def main(report_state_file):
     print('By ReportState')
     signed_jwt = generate_jwt(service_account).decode("utf-8")  # Decode
     access_token = get_access_token(signed_jwt)
-    success = report_state(access_token, report_state_file)
-
-    if success:
+    if success := report_state(access_token, report_state_file):
         print('Report State has been done successfully.')
     else:
         print('Report State failed. Please check the log above.')
diff --git a/action_devices.py b/action_devices.py
index 4b2de47..3774dbb 100644
--- a/action_devices.py
+++ b/action_devices.py
@@ -42,7 +42,7 @@ def rsync():
         DEVICE = {
             "id": k,
         }
-        DEVICE.update(v)
+        DEVICE |= v
 
         DEVICES.append(DEVICE)
     return DEVICES
@@ -74,7 +74,7 @@ def onQuery(body):
     for i in body['inputs']:
         for device in i['payload']['devices']:
             deviceId = device['id']
-            print('DEVICE ID: ' + deviceId)
+            print(f'DEVICE ID: {deviceId}')
             data = rquery(deviceId)
             payload['devices'][deviceId] = data
     return payload
@@ -141,8 +141,7 @@ def actions(req):
             # SEND TEST MQTT
             deviceId = payload['commands'][0]['ids'][0]
             params = payload['commands'][0]['states']
-            mqtt.publish(topic=str(deviceId) + '/' + 'notification',
-                         payload=str(params), qos=0)  # SENDING MQTT MESSAGE
+            mqtt.publish(topic=f'{str(deviceId)}/notification', payload=str(params), qos=0)
         elif i['intent'] == "action.devices.DISCONNECT":
             print("\nDISCONNECT ACTION")
         else:
@@ -152,7 +151,7 @@ def actions(req):
 
 def request_sync(api_key, agent_user_id):
     """This function does blah blah."""
-    url = 'https://homegraph.googleapis.com/v1/devices:requestSync?key=' + api_key
+    url = f'https://homegraph.googleapis.com/v1/devices:requestSync?key={api_key}'
     data = {"agentUserId": agent_user_id, "async": True}
 
     response = requests.post(url, json=data)
diff --git a/app.py b/app.py
index 0707f7f..973e0f6 100644
--- a/app.py
+++ b/app.py
@@ -42,7 +42,7 @@
 FIREBASE_OPTIONS = {'databaseURL': FIREBASE_DATABASEURL}
 initialize_app(FIREBASE_CREDENTIALS, FIREBASE_OPTIONS)
 
-ALLOWED_EXTENSIONS = set(['txt', 'py'])  # for some files to save
+ALLOWED_EXTENSIONS = {'txt', 'py'}
 
 
 @login_manager.user_loader
diff --git a/auth.py b/auth.py
index 950988f..731385b 100644
--- a/auth.py
+++ b/auth.py
@@ -42,9 +42,7 @@ def signup_post():
     email = request.form.get('email')
     name = request.form.get('name')
     password = request.form.get('password')
-    # get user from database
-    user = User.query.filter_by(email=email).first()
-    if user:
+    if user := User.query.filter_by(email=email).first():
         flash('This Mail is used by another Person')
         return redirect(url_for('auth.signup'))
     # If not User found Create new
diff --git a/generate_service_account_file.py b/generate_service_account_file.py
index e51c472..7e4e725 100644
--- a/generate_service_account_file.py
+++ b/generate_service_account_file.py
@@ -26,7 +26,7 @@ def generate_file():
         print('Try to replace NewLine Exception')
         data['private_key'] = data['private_key'].replace('\\n', '\n')
     except AttributeError as e:
-        print('Error: %s' % e)
+        print(f'Error: {e}')
     print('Dictionary Generated')
 
     return data
diff --git a/models.py b/models.py
index 3df0674..651f691 100644
--- a/models.py
+++ b/models.py
@@ -31,9 +31,7 @@ def client_type(self):
 
     @property
     def redirect_uris(self):
-        if self._redirect_uris:
-            return self._redirect_uris.split()
-        return []
+        return self._redirect_uris.split() if self._redirect_uris else []
 
     @property
     def default_redirect_uri(self):
@@ -41,9 +39,7 @@ def default_redirect_uri(self):
 
     @property
     def default_scopes(self):
-        if self._default_scopes:
-            return self._default_scopes.split()
-        return []
+        return self._default_scopes.split() if self._default_scopes else []
 
 
 class Grant(db.Model):
@@ -70,9 +66,7 @@ def delete(self):
 
     @property
     def scopes(self):
-        if self._scopes:
-            return self._scopes.split()
-        return []
+        return self._scopes.split() if self._scopes else []
 
 
 class Token(db.Model):
@@ -96,6 +90,4 @@ class Token(db.Model):
 
     @property
     def scopes(self):
-        if self._scopes:
-            return self._scopes.split()
-        return []
+        return self._scopes.split() if self._scopes else []
diff --git a/notifications.py b/notifications.py
index 471bcaf..f55645d 100644
--- a/notifications.py
+++ b/notifications.py
@@ -11,31 +11,26 @@
 
 @mqtt.on_message()
 def handle_messages(client, userdata, message):
-    print('Received message on topic {}: {}'
-          .format(message.topic, message.payload.decode()))
+    print(f'Received message on topic {message.topic}: {message.payload.decode()}')
     if message == 'hi':
         print('== THIS IS NOT JOKE NO HI HERE ==')
 
 
 @mqtt.on_publish()
 def handle_publish(client, userdata, mid):
-    print('Published message with mid {}.'
-          .format(mid))
+    print(f'Published message with mid {mid}.')
 
 
 @mqtt.on_subscribe()
 def handle_subscribe(client, userdata, mid, granted_qos):
-    print('Subscription id {} granted with qos {}.'
-          .format(mid, granted_qos))
+    print(f'Subscription id {mid} granted with qos {granted_qos}.')
 
 
 @mqtt.on_topic('XXX/notification')
 def handle_mytopic(client, userdata, message):
-    print('Received message on topic {}: {}'
-          .format(message.topic, message.payload.decode()))
+    print(f'Received message on topic {message.topic}: {message.payload.decode()}')
 
 
 @mqtt.on_topic('ZZZ/notification')
 def handle_ztopic(client, userdata, message):
-    print('Received message on topic {}: {}'
-          .format(message.topic, message.payload.decode()))
+    print(f'Received message on topic {message.topic}: {message.payload.decode()}')
diff --git a/routes.py b/routes.py
index a23c789..00b4e25 100644
--- a/routes.py
+++ b/routes.py
@@ -36,7 +36,7 @@ def access_token():
 def authorize(*args, **kwargs):
     print("this is authorize")
     user = get_current_user()
-    print("Authorize User: %s" % user)
+    print(f"Authorize User: {user}")
     if not user:
         return redirect('/')
     if request.method == 'GET':