1 files changed, 7 insertions, 0 deletions
diff --git a/tests/null_fk/models.py b/tests/null_fk/models.py
index c86ee8a5a9..9309ae940f 100644
--- a/tests/null_fk/models.py
+++ b/tests/null_fk/models.py
@@ -9,14 +9,17 @@ from django.utils.encoding import python_2_unicode_compatible
 class SystemDetails(models.Model):
     details = models.TextField()
 
+
 class SystemInfo(models.Model):
     system_details = models.ForeignKey(SystemDetails)
     system_name = models.CharField(max_length=32)
 
+
 class Forum(models.Model):
     system_info = models.ForeignKey(SystemInfo)
     forum_name = models.CharField(max_length=32)
 
+
 @python_2_unicode_compatible
 class Post(models.Model):
     forum = models.ForeignKey(Forum, null=True)
@@ -25,6 +28,7 @@ class Post(models.Model):
     def __str__(self):
         return self.title
 
+
 @python_2_unicode_compatible
 class Comment(models.Model):
     post = models.ForeignKey(Post, null=True)
@@ -38,12 +42,15 @@ class Comment(models.Model):
 
 # Ticket 15823
 
+
 class Item(models.Model):
     title = models.CharField(max_length=100)
 
+
 class PropertyValue(models.Model):
     label = models.CharField(max_length=100)
 
+
 class Property(models.Model):
     item = models.ForeignKey(Item, related_name='props')
     key = models.CharField(max_length=100)