1 files changed, 4 insertions, 0 deletions
diff --git a/tests/null_fk_ordering/models.py b/tests/null_fk_ordering/models.py
index 3caff0d594..dac1c4f6ae 100644
--- a/tests/null_fk_ordering/models.py
+++ b/tests/null_fk_ordering/models.py
@@ -15,6 +15,7 @@ from django.utils.encoding import python_2_unicode_compatible
 class Author(models.Model):
     name = models.CharField(max_length=150)
 
+
 @python_2_unicode_compatible
 class Article(models.Model):
     title = models.CharField(max_length=150)
@@ -31,10 +32,12 @@ class Article(models.Model):
 class SystemInfo(models.Model):
     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)
@@ -43,6 +46,7 @@ class Post(models.Model):
     def __str__(self):
         return self.title
 
+
 @python_2_unicode_compatible
 class Comment(models.Model):
     post = models.ForeignKey(Post, null=True)