Some style fixes for stuff that was clearly brough tover from doctests.

tests/regressiontests/transactions_regress/models.py

@@ -1,10 +1,13 @@
 from django.db import models
 
+
 class Mod(models.Model):
     fld = models.IntegerField()
 
+
 class M2mA(models.Model):
     others = models.ManyToManyField('M2mB')
 
+
 class M2mB(models.Model):
     fld = models.IntegerField()

tests/regressiontests/transactions_regress/tests.py

@@ -42,7 +42,7 @@ def test_commit_manually_enforced(self):
         @commit_manually
         def non_comitter():
             "Execute a managed transaction with read-only operations and fail to commit"
-            _ = Mod.objects.count()
+            Mod.objects.count()
 
         self.assertRaises(TransactionManagementError, non_comitter)
 
@@ -56,7 +56,7 @@ def committer():
             """
             Perform a database query, then commit the transaction
             """
-            _ = Mod.objects.count()
+            Mod.objects.count()
             transaction.commit()
 
         try:
@@ -74,7 +74,7 @@ def roller_back():
             """
             Perform a database query, then rollback the transaction
             """
-            _ = Mod.objects.count()
+            Mod.objects.count()
             transaction.rollback()
 
         try:
@@ -90,9 +90,9 @@ def test_commit_manually_enforced_after_commit(self):
         @commit_manually
         def fake_committer():
             "Query, commit, then query again, leaving with a pending transaction"
-            _ = Mod.objects.count()
+            Mod.objects.count()
             transaction.commit()
-            _ = Mod.objects.count()
+            Mod.objects.count()
 
         self.assertRaises(TransactionManagementError, fake_committer)
 
@@ -239,7 +239,7 @@ def work():
             mod = Mod.objects.create(fld=1)
             pk = mod.pk
             sid = transaction.savepoint()
-            mod1 = Mod.objects.filter(pk=pk).update(fld=10)
+            Mod.objects.filter(pk=pk).update(fld=10)
             transaction.savepoint_commit(sid)
             mod2 = Mod.objects.get(pk=pk)
             transaction.commit()
@@ -257,7 +257,7 @@ def work():
             mod = Mod.objects.create(fld=1)
             pk = mod.pk
             sid = transaction.savepoint()
-            mod1 = Mod.objects.filter(pk=pk).update(fld=20)
+            Mod.objects.filter(pk=pk).update(fld=20)
             transaction.savepoint_rollback(sid)
             mod2 = Mod.objects.get(pk=pk)
             transaction.commit()