PEP8 cleanup

Signed-off-by: Jason Myers <jason@jasonamyers.com>

tests/known_related_objects/models.py

@@ -6,17 +6,21 @@ Test that queries are not redone when going back through known relations.
 
 from django.db import models
 
+
 class Tournament(models.Model):
     name = models.CharField(max_length=30)
 
+
 class Organiser(models.Model):
     name = models.CharField(max_length=30)
 
+
 class Pool(models.Model):
     name = models.CharField(max_length=30)
     tournament = models.ForeignKey(Tournament)
     organiser = models.ForeignKey(Organiser)
 
+
 class PoolStyle(models.Model):
     name = models.CharField(max_length=30)
     pool = models.OneToOneField(Pool)