PEP8 cleanup

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

tests/aggregation_regress/models.py

@@ -61,6 +61,7 @@ class Store(models.Model):
     def __str__(self):
         return self.name
 
+
 class Entries(models.Model):
     EntryID = models.AutoField(primary_key=True, db_column='Entry ID')
     Entry = models.CharField(unique=True, max_length=50)
@@ -69,7 +70,7 @@ class Entries(models.Model):
 
 class Clues(models.Model):
     ID = models.AutoField(primary_key=True)
-    EntryID = models.ForeignKey(Entries, verbose_name='Entry', db_column = 'Entry ID')
+    EntryID = models.ForeignKey(Entries, verbose_name='Entry', db_column='Entry ID')
     Clue = models.CharField(max_length=150)
 
 
@@ -88,13 +89,16 @@ class HardbackBook(Book):
     def __str__(self):
         return "%s (hardback): %s" % (self.name, self.weight)
 
+
 # Models for ticket #21150
 class Alfa(models.Model):
     name = models.CharField(max_length=10, null=True)
 
+
 class Bravo(models.Model):
     pass
 
+
 class Charlie(models.Model):
     alfa = models.ForeignKey(Alfa, null=True)
     bravo = models.ForeignKey(Bravo, null=True)