Import cleanups, reorganization, PEP8 cleanups

mayan/apps/linking/models.py

@@ -3,9 +3,8 @@ from __future__ import absolute_import
 from django.db import models
 from django.utils.translation import ugettext_lazy as _
 
+from .literals import INCLUSION_AND, INCLUSION_CHOICES, OPERATOR_CHOICES
 from .managers import SmartLinkManager
-from .literals import (OPERATOR_CHOICES, INCLUSION_AND,
-    INCLUSION_CHOICES)
 
 
 class SmartLink(models.Model):