Style fixes suggested by pylint.

fedireads/models/book.py

@@ -1,8 +1,9 @@
 ''' database schema for books and shelves '''
+from uuid import uuid4
+
 from django.utils import timezone
 from django.db import models
 from model_utils.managers import InheritanceManager
-from uuid import uuid4
 
 from fedireads.settings import DOMAIN
 from fedireads.utils.fields import JSONField, ArrayField
@@ -155,4 +156,3 @@ class Author(FedireadsModel):
         models.CharField(max_length=255), blank=True, default=list
     )
     bio = models.TextField(null=True, blank=True)
-

fedireads/models/status.py

@@ -1,9 +1,10 @@
 ''' models for storing different kinds of Activities '''
+import urllib.parse
+
 from django.utils import timezone
 from django.core.validators import MaxValueValidator, MinValueValidator
 from django.db import models
 from model_utils.managers import InheritanceManager
-import urllib.parse
 
 from fedireads.utils.models import FedireadsModel
 
@@ -15,7 +16,8 @@ class Status(FedireadsModel):
     status_type = models.CharField(max_length=255, default='Note')
     content = models.TextField(blank=True, null=True)
     mention_users = models.ManyToManyField('User', related_name='mention_user')
-    mention_books = models.ManyToManyField('Edition', related_name='mention_book')
+    mention_books = models.ManyToManyField(
+        'Edition', related_name='mention_book')
     activity_type = models.CharField(max_length=255, default='Note')
     local = models.BooleanField(default=True)
     privacy = models.CharField(max_length=255, default='public')

fedireads/models/user.py

@@ -5,7 +5,7 @@ from django.contrib.auth.models import AbstractUser
 from django.db import models
 from django.dispatch import receiver
 
-from fedireads.models import Shelf
+from fedireads.models.shelf import Shelf
 from fedireads.settings import DOMAIN
 from fedireads.utils.models import FedireadsModel
 
@@ -190,4 +190,3 @@ def execute_after_save(sender, instance, created, *args, **kwargs):
             user=instance,
             editable=False
         ).save()
-