[py3] Refactored __unicode__ to __str__.

* Renamed the __unicode__ methods
* Applied the python_2_unicode_compatible decorator
* Removed the StrAndUnicode mix-in that is superseded by
  python_2_unicode_compatible
* Kept the __unicode__ methods in classes that specifically
  test it under Python 2

1 files changed, 3 insertions, 1 deletions

diff --git a/tests/regressiontests/model_formsets_regress/models.py b/tests/regressiontests/model_formsets_regress/models.py
index 189ed8072e..f94ad51929 100644
--- a/tests/regressiontests/model_formsets_regress/models.py
+++ b/tests/regressiontests/model_formsets_regress/models.py
@@ -1,4 +1,5 @@
 from django.db import models
+from django.utils.encoding import python_2_unicode_compatible
 
 
 class User(models.Model):
@@ -22,9 +23,10 @@ class Manager(models.Model):
 class Network(models.Model):
     name = models.CharField(max_length=15)
 
+@python_2_unicode_compatible
 class Host(models.Model):
     network = models.ForeignKey(Network)
     hostname = models.CharField(max_length=25)
 
-    def __unicode__(self):
+    def __str__(self):
         return self.hostname