diff --git a/account/custom_middleware.py b/account/custom_middleware.py
index 42a3b0f..b3cc750 100644
--- a/account/custom_middleware.py
+++ b/account/custom_middleware.py
@@ -17,6 +17,8 @@ from guardian.models import Guardian
 # multiple devices only
 # user can login in single
 # device at a time"""
+# force update
+# use 308 status code for force update
 
 def custom_response(custom_error, response_status = status.HTTP_404_NOT_FOUND):
     """custom response"""
diff --git a/account/serializers.py b/account/serializers.py
index dbb52a0..b783efd 100644
--- a/account/serializers.py
+++ b/account/serializers.py
@@ -123,7 +123,7 @@ class ChangePasswordSerializer(serializers.Serializer):
 
     def create(self, validated_data):
         """
-
+        change password
         """
         new_password = validated_data.pop('new_password')
         current_password = validated_data.pop('current_password')
@@ -392,7 +392,8 @@ class UserPhoneOtpSerializer(serializers.ModelSerializer):
         fields = '__all__'
 
 class ForceUpdateSerializer(serializers.ModelSerializer):
-    # ForceUpdate Serializer
+    """ ForceUpdate Serializer
+    """
 
     class Meta(object):
         """ meta info """
diff --git a/base/messages.py b/base/messages.py
index 8ad5234..b4abf7d 100644
--- a/base/messages.py
+++ b/base/messages.py
@@ -101,13 +101,16 @@ ERROR_CODE = {
     "2072": "You can not approve or reject this task because junior does not exist in the system",
     "2073": "You can not approve or reject this junior because junior does not exist in the system",
     "2074": "You can not complete this task because you does not exist in the system",
+    # deactivate account
     "2075": "Your account is deactivated. Please contact with admin",
     "2076": "This junior already associate with you",
     "2077": "You can not add guardian",
     "2078": "This junior is not associate with you",
+    # force update
     "2079": "Please update your app version for enjoying uninterrupted services",
     "2080": "Can not add App version",
     "2081": "You can not add more than 3 guardian",
+    # guardian code not exist
     "2082": "Guardian code does not exist"
 
 }
diff --git a/guardian/serializers.py b/guardian/serializers.py
index af11acc..ae72bdc 100644
--- a/guardian/serializers.py
+++ b/guardian/serializers.py
@@ -36,6 +36,7 @@ from django.utils.translation import gettext as _
 
 # In this serializer file
 # define user serializer,
+# define password validation
 # create guardian serializer,
 # task serializer,
 # guardian serializer,
@@ -47,6 +48,7 @@ from django.utils.translation import gettext as _
 from rest_framework import serializers
 
 class PasswordValidator:
+    """Password validation"""
     def __init__(self, min_length=8, max_length=None, require_uppercase=True, require_numbers=True):
         self.min_length = min_length
         self.max_length = max_length
@@ -57,6 +59,7 @@ class PasswordValidator:
         self.enforce_password_policy(value)
 
     def enforce_password_policy(self, password):
+        # add validation for password
         special_characters = "!@#$%^&*()_-+=<>?/[]{}|"
         if len(password) < self.min_length:
             raise serializers.ValidationError(
@@ -64,16 +67,20 @@ class PasswordValidator:
             )
 
         if self.max_length is not None and len(password) > self.max_length:
+            # must be 8 character
             raise serializers.ValidationError(
                 _("Password must be at most %(max_length)d characters long.") % {'max_length': self.max_length}
             )
 
         if self.require_uppercase and not any(char.isupper() for char in password):
+            # must contain upper case letter
             raise serializers.ValidationError(_("Password must contain at least one uppercase letter."))
 
         if self.require_numbers and not any(char.isdigit() for char in password):
+            # must contain digit
             raise serializers.ValidationError(_("Password must contain at least one digit."))
         if self.require_numbers and not any(char in special_characters for char in password):
+            # must contain special character
             raise serializers.ValidationError(_("Password must contain at least one special character."))
 
 
diff --git a/guardian/views.py b/guardian/views.py
index b541660..947f071 100644
--- a/guardian/views.py
+++ b/guardian/views.py
@@ -288,7 +288,8 @@ class ApproveJuniorAPIView(viewsets.ModelViewSet):
             if request.data['action'] == '1':
                 # use ApproveJuniorSerializer serializer
                 serializer = ApproveJuniorSerializer(context={"guardian_code": guardian.guardian_code,
-                                                              "junior": junior_queryset, "action": request.data['action']},
+                                                              "junior": junior_queryset,
+                                                              "action": request.data['action']},
                                                      data=request.data)
                 if serializer.is_valid():
                     # save serializer
diff --git a/junior/serializers.py b/junior/serializers.py
index 09d4241..98616a2 100644
--- a/junior/serializers.py
+++ b/junior/serializers.py
@@ -523,18 +523,18 @@ class RemoveGuardianCodeSerializer(serializers.ModelSerializer):
         return instance
 
 class FAQSerializer(serializers.ModelSerializer):
-    # FAQ Serializer
+    """FAQ Serializer"""
 
     class Meta(object):
-        # meta info
+        """meta info"""
         model = FAQ
         fields = ('id', 'question', 'description')
 
 class CreateArticleCardSerializer(serializers.ModelSerializer):
-    # Article card Serializer
+    """Article card Serializer"""
 
     class Meta(object):
-        # meta info
+        """meta info"""
         model = ArticleCard
         fields = ('id', 'article')
 
diff --git a/junior/views.py b/junior/views.py
index c4297e9..4d20d57 100644
--- a/junior/views.py
+++ b/junior/views.py
@@ -266,10 +266,10 @@ class FilterJuniorAPIView(viewsets.ModelViewSet):
         manual_parameters=[
             # Example of a query parameter
             openapi.Parameter(
-                'title',  # Query parameter name
-                openapi.IN_QUERY,  # Parameter location
+                'title',
+                openapi.IN_QUERY,
                 description='title of the name',
-                type=openapi.TYPE_STRING,  # Parameter type
+                type=openapi.TYPE_STRING,
             ),
             # Add more parameters as needed
         ]