PEP8 cleanup

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

tests/admin_changelist/models.py

@@ -1,26 +1,32 @@
 from django.db import models
 from django.utils.encoding import python_2_unicode_compatible
 
+
 class Event(models.Model):
     # Oracle can have problems with a column named "date"
     date = models.DateField(db_column="event_date")
 
+
 class Parent(models.Model):
     name = models.CharField(max_length=128)
 
+
 class Child(models.Model):
     parent = models.ForeignKey(Parent, editable=False, null=True)
     name = models.CharField(max_length=30, blank=True)
     age = models.IntegerField(null=True, blank=True)
 
+
 class Genre(models.Model):
     name = models.CharField(max_length=20)
 
+
 class Band(models.Model):
     name = models.CharField(max_length=20)
     nr_of_members = models.PositiveIntegerField()
     genres = models.ManyToManyField(Genre)
 
+
 @python_2_unicode_compatible
 class Musician(models.Model):
     name = models.CharField(max_length=30)
@@ -28,6 +34,7 @@ class Musician(models.Model):
     def __str__(self):
         return self.name
 
+
 @python_2_unicode_compatible
 class Group(models.Model):
     name = models.CharField(max_length=30)
@@ -36,26 +43,32 @@ class Group(models.Model):
     def __str__(self):
         return self.name
 
+
 class Membership(models.Model):
     music = models.ForeignKey(Musician)
     group = models.ForeignKey(Group)
     role = models.CharField(max_length=15)
 
+
 class Quartet(Group):
     pass
 
+
 class ChordsMusician(Musician):
     pass
 
+
 class ChordsBand(models.Model):
     name = models.CharField(max_length=30)
     members = models.ManyToManyField(ChordsMusician, through='Invitation')
 
+
 class Invitation(models.Model):
     player = models.ForeignKey(ChordsMusician)
     band = models.ForeignKey(ChordsBand)
     instrument = models.CharField(max_length=15)
 
+
 class Swallow(models.Model):
     origin = models.CharField(max_length=255)
     load = models.FloatField()
@@ -77,6 +90,7 @@ class OrderedObjectManager(models.Manager):
     def get_queryset(self):
         return super(OrderedObjectManager, self).get_queryset().order_by('number')
 
+
 class OrderedObject(models.Model):
     """
     Model with Manager that defines a default order.
@@ -88,5 +102,6 @@ class OrderedObject(models.Model):
 
     objects = OrderedObjectManager()
 
+
 class CustomIdUser(models.Model):
     uuid = models.AutoField(primary_key=True)