[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

knox/auth.py

@@ -7,6 +7,7 @@
 from rest_framework.authentication import (
     BaseAuthentication, get_authorization_header,
 )
+
 from knox.crypto import hash_token
 from knox.models import (
     get_refresh_family_model, get_refresh_token_model, get_token_model,

knox/settings.py

@@ -1,4 +1,5 @@
 from datetime import timedelta
+
 from django.conf import settings
 from django.test.signals import setting_changed
 from rest_framework.settings import APISettings, api_settings

tests/tests.py

@@ -15,7 +15,7 @@
 from knox.models import AuthRefreshToken, AuthToken, RefreshFamily
 from knox.serializers import UserSerializer
 from knox.settings import CONSTANTS, knox_settings
-from knox.signals import token_expired,refresh_token_expired
+from knox.signals import refresh_token_expired, token_expired
 
 User = get_user_model()
 root_url = reverse('api-root')