diff --git a/avatar/api/__init__.py b/avatar/api/__init__.py
index 96c4228..d087506 100644
--- a/avatar/api/__init__.py
+++ b/avatar/api/__init__.py
@@ -1 +1 @@
-import avatar.api.signals
\ No newline at end of file
+import avatar.api.signals
diff --git a/avatar/api/apps.py b/avatar/api/apps.py
index 88ee35e..f139ac4 100644
--- a/avatar/api/apps.py
+++ b/avatar/api/apps.py
@@ -2,5 +2,5 @@ from django.apps import AppConfig
 
 
 class ApiConfig(AppConfig):
-    default_auto_field = 'django.db.models.BigAutoField'
-    name = 'avatar.api'
+    default_auto_field = "django.db.models.BigAutoField"
+    name = "avatar.api"
diff --git a/avatar/api/docs/avatar.rst b/avatar/api/docs/avatar.rst
index 6c49abc..f311ee9 100644
--- a/avatar/api/docs/avatar.rst
+++ b/avatar/api/docs/avatar.rst
@@ -189,7 +189,3 @@ API Setting
 .. py:data:: API_AVATAR_CHANGE_IMAGE
 
     It Allows the user to Change the avatar image in ``PUT`` method. Default is ``False``.
-
-
-
-
diff --git a/avatar/api/docs/conf.py b/avatar/api/docs/conf.py
index facfd19..743b82a 100644
--- a/avatar/api/docs/conf.py
+++ b/avatar/api/docs/conf.py
@@ -6,17 +6,17 @@
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
 
-project = 'django-avatar'
+project = "django-avatar"
 copyright = "2013, django-avatar developers"
-author = 'keyvan'
+author = "keyvan"
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
 
 extensions = []
 
-templates_path = ['_templates']
-exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
+templates_path = ["_templates"]
+exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
 
 htmlhelp_basename = "django-avatar apidoc"
 
@@ -28,6 +28,6 @@ pygments_style = "sphinx"
 # -- Options for HTML output -------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
 
-html_theme = 'sphinx_rtd_theme'
-html_static_path = ['_static']
-epub_show_urls = 'footnote'
+html_theme = "sphinx_rtd_theme"
+html_static_path = ["_static"]
+epub_show_urls = "footnote"
diff --git a/avatar/api/docs/index.rst b/avatar/api/docs/index.rst
index 6e7b2e9..e28688c 100644
--- a/avatar/api/docs/index.rst
+++ b/avatar/api/docs/index.rst
@@ -308,5 +308,3 @@ after `Installation <#installation>`_ .
    :maxdepth: 1
 
    avatar
-
-
diff --git a/avatar/api/requirements.txt b/avatar/api/requirements.txt
index 3117431..6f1c1f3 100644
--- a/avatar/api/requirements.txt
+++ b/avatar/api/requirements.txt
@@ -1 +1 @@
-djangorestframework
\ No newline at end of file
+djangorestframework
diff --git a/avatar/api/serializers.py b/avatar/api/serializers.py
index 5c4d219..6dc1b62 100644
--- a/avatar/api/serializers.py
+++ b/avatar/api/serializers.py
@@ -1,43 +1,51 @@
 import os
-from PIL import Image, ImageOps
-from avatar.models import Avatar
-from avatar.conf import settings
-from rest_framework import serializers
-from avatar.conf import settings as api_setting
-from django.utils.translation import gettext_lazy as _
+
 from django.template.defaultfilters import filesizeformat
+from django.utils.translation import gettext_lazy as _
+from PIL import Image, ImageOps
+from rest_framework import serializers
+
+from avatar.conf import settings
+from avatar.conf import settings as api_setting
+from avatar.models import Avatar
 
 
 class AvatarSerializer(serializers.ModelSerializer):
-    avatar_url = serializers.HyperlinkedIdentityField(view_name='avatar-detail', )
+    avatar_url = serializers.HyperlinkedIdentityField(
+        view_name="avatar-detail",
+    )
     user = serializers.HiddenField(default=serializers.CurrentUserDefault())
 
     class Meta:
         model = Avatar
-        fields = ['id', 'avatar_url', 'avatar', 'primary', 'user']
-        extra_kwargs = {'avatar': {'required': True}}
+        fields = ["id", "avatar_url", "avatar", "primary", "user"]
+        extra_kwargs = {"avatar": {"required": True}}
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        request = kwargs.get('context').get('request', None)
+        request = kwargs.get("context").get("request", None)
 
         self.user = request.user
 
     def get_fields(self, *args, **kwargs):
         fields = super(AvatarSerializer, self).get_fields(*args, **kwargs)
-        request = self.context.get('request', None)
+        request = self.context.get("request", None)
 
         # remove avatar url field in detail page
-        if bool(self.context.get('view').kwargs):
-            fields.pop('avatar_url')
+        if bool(self.context.get("view").kwargs):
+            fields.pop("avatar_url")
 
         # remove avatar field in put method
-        if request and getattr(request, 'method', None) == "PUT":
+        if request and getattr(request, "method", None) == "PUT":
             # avatar updates only when primary=true and API_AVATAR_CHANGE_IMAGE = True
-            if not api_setting.API_AVATAR_CHANGE_IMAGE or self.instance and not self.instance.primary:
-                fields.pop('avatar')
+            if (
+                not api_setting.API_AVATAR_CHANGE_IMAGE
+                or self.instance
+                and not self.instance.primary
+            ):
+                fields.pop("avatar")
             else:
-                fields.get('avatar', None).required = False
+                fields.get("avatar", None).required = False
         return fields
 
     def validate_avatar(self, value):
diff --git a/avatar/api/signals.py b/avatar/api/signals.py
index 62afc3e..14c5dbf 100644
--- a/avatar/api/signals.py
+++ b/avatar/api/signals.py
@@ -1,8 +1,10 @@
 import os
-from avatar.conf import settings
+
 from django.db.models import signals
-from avatar.api.shortcut import get_object_or_none
+
 from avatar.api.conf import settings as api_settings
+from avatar.api.shortcut import get_object_or_none
+from avatar.conf import settings
 from avatar.models import Avatar, invalidate_avatar_cache
 
 
@@ -20,11 +22,12 @@ def create_default_thumbnails(sender, instance, created=False, **kwargs):
                     instance.create_thumbnail(size[0], size[1])
 
 
-def remove_previous_avatar_images_when_update(sender, instance=None, created=False, update_main_avatar=True, **kwargs):
+def remove_previous_avatar_images_when_update(
+    sender, instance=None, created=False, update_main_avatar=True, **kwargs
+):
     if not created:
         old_instance = get_object_or_none(Avatar, pk=instance.pk)
         if old_instance and not old_instance.avatar == instance.avatar:
-
             base_filepath = old_instance.avatar.name
             path, filename = os.path.split(base_filepath)
             # iterate through resized avatars directories and delete resized avatars
@@ -33,10 +36,14 @@ def remove_previous_avatar_images_when_update(sender, instance=None, created=Fal
                 resized_widths, _ = old_instance.avatar.storage.listdir(resized_path)
                 for width in resized_widths:
                     resized_width_path = os.path.join(resized_path, width)
-                    resized_heights, _ = old_instance.avatar.storage.listdir(resized_width_path)
+                    resized_heights, _ = old_instance.avatar.storage.listdir(
+                        resized_width_path
+                    )
                     for height in resized_heights:
                         if old_instance.thumbnail_exists(width, height):
-                            old_instance.avatar.storage.delete(old_instance.avatar_name(width, height))
+                            old_instance.avatar.storage.delete(
+                                old_instance.avatar_name(width, height)
+                            )
                 if update_main_avatar:
                     if old_instance.avatar.storage.exists(old_instance.avatar.name):
                         old_instance.avatar.storage.delete(old_instance.avatar.name)
diff --git a/avatar/api/urls.py b/avatar/api/urls.py
index a69381d..91dce0d 100644
--- a/avatar/api/urls.py
+++ b/avatar/api/urls.py
@@ -1,7 +1,8 @@
-from avatar.api.views import AvatarViewSets
 from rest_framework.routers import SimpleRouter
 
+from avatar.api.views import AvatarViewSets
+
 router = SimpleRouter()
-router.register('avatar', AvatarViewSets)
+router.register("avatar", AvatarViewSets)
 
 urlpatterns = router.urls
diff --git a/avatar/api/utils.py b/avatar/api/utils.py
index 62e978c..9784fc6 100644
--- a/avatar/api/utils.py
+++ b/avatar/api/utils.py
@@ -1,10 +1,11 @@
-from avatar.conf import settings
 from html.parser import HTMLParser
 
+from avatar.conf import settings
+
 
 class HTMLTagParser(HTMLParser):
     """
-        URL parser for getting (url ,width ,height) from avatar templatetags
+    URL parser for getting (url ,width ,height) from avatar templatetags
     """
 
     def __init__(self, output=None):
@@ -20,30 +21,27 @@ class HTMLTagParser(HTMLParser):
 
 def assign_width_or_height(query_params):
     """
-        Getting width and height in url parameters and specifying them
+    Getting width and height in url parameters and specifying them
     """
     avatar_default_size = settings.AVATAR_DEFAULT_SIZE
 
-    width = query_params.get('width', avatar_default_size)
-    height = query_params.get('height', avatar_default_size)
+    width = query_params.get("width", avatar_default_size)
+    height = query_params.get("height", avatar_default_size)
 
-    if width == '':
+    if width == "":
         width = avatar_default_size
-    if height == '':
+    if height == "":
         height = avatar_default_size
 
-    if height == avatar_default_size and height != '':
+    if height == avatar_default_size and height != "":
         height = width
-    elif width == avatar_default_size and width != '':
+    elif width == avatar_default_size and width != "":
         width = height
 
     width = int(width)
     height = int(height)
 
-    context = {
-        'width': width,
-        'height': height
-    }
+    context = {"width": width, "height": height}
     return context
 
 
diff --git a/avatar/api/views.py b/avatar/api/views.py
index a757cd9..7b41a4f 100644
--- a/avatar/api/views.py
+++ b/avatar/api/views.py
@@ -1,21 +1,23 @@
-from avatar.models import Avatar
 from django.db.models import QuerySet
-from avatar.api.utils import HTMLTagParser
-from rest_framework.response import Response
-from rest_framework.decorators import action
-from avatar.templatetags.avatar_tags import avatar
-from avatar.api.serializers import AvatarSerializer
-from rest_framework.exceptions import ValidationError
 from django.utils.translation import gettext_lazy as _
-from rest_framework import viewsets, status, permissions
-from avatar.api.utils import set_new_primary, assign_width_or_height
-from avatar.utils import invalidate_cache, get_default_avatar_url, get_primary_avatar
+from rest_framework import permissions, status, viewsets
+from rest_framework.decorators import action
+from rest_framework.exceptions import ValidationError
+from rest_framework.response import Response
+
+from avatar.api.serializers import AvatarSerializer
+from avatar.api.utils import HTMLTagParser, assign_width_or_height, set_new_primary
+from avatar.models import Avatar
+from avatar.templatetags.avatar_tags import avatar
+from avatar.utils import get_default_avatar_url, get_primary_avatar, invalidate_cache
 
 
 class AvatarViewSets(viewsets.ModelViewSet):
     serializer_class = AvatarSerializer
     permission_classes = [permissions.IsAuthenticated]
-    queryset = Avatar.objects.select_related('user').order_by('-primary', '-date_uploaded')
+    queryset = Avatar.objects.select_related("user").order_by(
+        "-primary", "-date_uploaded"
+    )
 
     @property
     def parse_html_to_json(self):
@@ -26,9 +28,8 @@ class AvatarViewSets(viewsets.ModelViewSet):
 
     def get_queryset(self):
         assert self.queryset is not None, (
-                "'%s' should either include a `queryset` attribute, "
-                "or override the `get_queryset()` method."
-                % self.__class__.__name__
+            "'%s' should either include a `queryset` attribute, "
+            "or override the `get_queryset()` method." % self.__class__.__name__
         )
 
         queryset = self.queryset
@@ -52,8 +53,9 @@ class AvatarViewSets(viewsets.ModelViewSet):
         return Response(
             {
                 "message": "You haven't uploaded an avatar yet. Please upload one now.",
-                "default_avatar": self.parse_html_to_json
-            })
+                "default_avatar": self.parse_html_to_json,
+            }
+        )
 
     def create(self, request, *args, **kwargs):
         serializer = self.get_serializer(data=request.data)
@@ -62,10 +64,7 @@ class AvatarViewSets(viewsets.ModelViewSet):
         headers = self.get_success_headers(serializer.data)
         message = _("Successfully uploaded a new avatar.")
 
-        context_data = {
-            'message': message,
-            'data': serializer.data
-        }
+        context_data = {"message": message, "data": serializer.data}
         return Response(context_data, status=status.HTTP_201_CREATED, headers=headers)
 
     def destroy(self, request, *args, **kwargs):
@@ -78,14 +77,14 @@ class AvatarViewSets(viewsets.ModelViewSet):
         return Response(message, status=status.HTTP_204_NO_CONTENT)
 
     def update(self, request, *args, **kwargs):
-        partial = kwargs.pop('partial', False)
+        partial = kwargs.pop("partial", False)
         instance = self.get_object()
         serializer = self.get_serializer(instance, data=request.data, partial=partial)
         serializer.is_valid(raise_exception=True)
-        avatar_image = serializer.validated_data.get('avatar')
-        primary_avatar = serializer.validated_data.get('primary')
+        avatar_image = serializer.validated_data.get("avatar")
+        primary_avatar = serializer.validated_data.get("primary")
         if not primary_avatar and avatar_image:
-            raise ValidationError('You cant update an avatar image that is not primary')
+            raise ValidationError("You cant update an avatar image that is not primary")
 
         if instance.primary is True:
             # Find the next avatar, and set it as the new primary
@@ -94,17 +93,16 @@ class AvatarViewSets(viewsets.ModelViewSet):
         self.perform_update(serializer)
         invalidate_cache(request.user)
         message = _("Successfully updated your avatar.")
-        if getattr(instance, '_prefetched_objects_cache', None):
+        if getattr(instance, "_prefetched_objects_cache", None):
             # If 'prefetch_related' has been applied to a queryset, we need to
             # forcibly invalidate the prefetch cache on the instance.
             instance._prefetched_objects_cache = {}
-        context_data = {
-            'message': message,
-            'data': serializer.data
-        }
+        context_data = {"message": message, "data": serializer.data}
         return Response(context_data)
 
-    @action(['GET'], detail=False, url_path='render_primary', name='Render Primary Avatar')
+    @action(
+        ["GET"], detail=False, url_path="render_primary", name="Render Primary Avatar"
+    )
     def render_primary(self, request, *args, **kwargs):
         """
 
@@ -117,19 +115,20 @@ class AvatarViewSets(viewsets.ModelViewSet):
         context_data = {}
         avatar_size = assign_width_or_height(request.query_params)
 
-        width = avatar_size.get('width')
-        height = avatar_size.get('height')
+        width = avatar_size.get("width")
+        height = avatar_size.get("height")
 
         primary_avatar = get_primary_avatar(request.user, width=width, height=height)
 
         if primary_avatar and primary_avatar.primary:
-
             url = primary_avatar.avatar_url(width, height)
 
         else:
             url = get_default_avatar_url()
             if bool(request.query_params):
-                context_data.update({'message': 'Resize parameters not working for default avatar'})
+                context_data.update(
+                    {"message": "Resize parameters not working for default avatar"}
+                )
 
         context_data.update({"image_url": request.build_absolute_uri(url)})
         return Response(context_data)
diff --git a/test_proj/test_proj/settings.py b/test_proj/test_proj/settings.py
index 8fbad49..ea8507d 100644
--- a/test_proj/test_proj/settings.py
+++ b/test_proj/test_proj/settings.py
@@ -38,7 +38,7 @@ INSTALLED_APPS = [
     "django.contrib.messages",
     "django.contrib.staticfiles",
     "avatar",
-    "rest_framework"
+    "rest_framework",
 ]
 
 MIDDLEWARE = [
diff --git a/test_proj/test_proj/urls.py b/test_proj/test_proj/urls.py
index 2c7a6b5..93b0308 100644
--- a/test_proj/test_proj/urls.py
+++ b/test_proj/test_proj/urls.py
@@ -1,13 +1,13 @@
 from django.conf import settings
 from django.conf.urls import include
 from django.contrib import admin
-from django.views.static import serve
 from django.urls import re_path
+from django.views.static import serve
 
 urlpatterns = [
     re_path(r"^admin/", admin.site.urls),
     re_path(r"^avatar/", include("avatar.urls")),
-    re_path(r"^api/", include('avatar.api.urls')),
+    re_path(r"^api/", include("avatar.api.urls")),
 ]