fix a migration back in post + db chap and feed thru. carrying on

Author: hjwp

chapter_working_incrementally.asciidoc

@@ -1328,14 +1328,15 @@ Migrations for 'lists':
 Let's see what that gives us:
 
 ----
-AssertionError: 'List object' != <List: List object>
+AssertionError: 'List object (1)' != <List: List object (1)>
 ----
 
 
-We're not quite there. Look closely at each side of the `!=`.  Django has only
-saved the string representation of the `List` object. To save the relationship
-to the object itself, we tell Django about the relationship between the two
-classes using a `ForeignKey`:
+We're not quite there. Look closely at each side of the `!=`.
+Do you see the quotes `'`?
+Django has only saved the string representation of the `List` object.
+To save the relationship to the object itself,
+we tell Django about the relationship between the two classes using a `ForeignKey`:
 
 [role="sourcecode"]
 .lists/models.py
@@ -1390,13 +1391,13 @@ Back in our tests, now what happens?
 ----
 $ pass:quotes[*python manage.py test lists*]
 [...]
-ERROR: test_displays_all_items (lists.tests.ListViewTest)
+ERROR: test_displays_all_items
 django.db.utils.IntegrityError: NOT NULL constraint failed: lists_item.list_id
 [...]
-ERROR: test_redirects_after_POST (lists.tests.NewListTest)
+ERROR: test_redirects_after_POST
 django.db.utils.IntegrityError: NOT NULL constraint failed: lists_item.list_id
 [...]
-ERROR: test_can_save_a_POST_request (lists.tests.NewListTest)
+ERROR: test_can_save_a_POST_request
 django.db.utils.IntegrityError: NOT NULL constraint failed: lists_item.list_id
 
 Ran 6 tests in 0.021s

source/chapter_explicit_waits_1/superlists

@@ -7,44 +7,44 @@
     Command,
 )
 
+
 class Chapter7Test(ChapterTest):
-    chapter_name = 'chapter_working_incrementally'
-    previous_chapter = 'chapter_explicit_waits_1'
+    chapter_name = "chapter_working_incrementally"
+    previous_chapter = "chapter_explicit_waits_1"
 
     def test_listings_and_commands_and_output(self):
         self.parse_listings()
 
         # sanity checks
-        self.assertEqual(self.listings[0].type, 'code listing currentcontents')
-        self.assertEqual(self.listings[1].type, 'output')
+        self.assertEqual(self.listings[0].type, "code listing currentcontents")
+        self.assertEqual(self.listings[1].type, "output")
 
         # skips
-        self.skip_with_check(40, 'should show 4 changed files') # git
-        self.skip_with_check(45, 'add a message summarising') # git
-        self.skip_with_check(63, '5 changed files') # git
-        self.skip_with_check(65, 'forms x2') # git
-        self.skip_with_check(92, '3 changed files') # git
+        self.skip_with_check(40, "should show 4 changed files")  # git
+        self.skip_with_check(45, "add a message summarising")  # git
+        self.skip_with_check(63, "5 changed files")  # git
+        self.skip_with_check(65, "forms x2")  # git
+        self.skip_with_check(92, "3 changed files")  # git
         touch_pos = 33
         touch = self.listings[touch_pos]
-        assert 'touch' in touch
+        assert "touch" in touch
 
         # other prep
         self.start_with_checkout()
-        self.run_command(Command('python3 manage.py migrate --noinput'))
+        self.run_command(Command("python3 manage.py migrate --noinput"))
 
         # hack fast-forward
         skip = False
         if skip:
             self.pos = 106
-            self.sourcetree.run_command('git checkout {}'.format(
-                self.sourcetree.get_commit_spec('ch07l036-1')
-            ))
+            self.sourcetree.run_command(
+                "git checkout {}".format(self.sourcetree.get_commit_spec("ch07l036-1"))
+            )
 
         while self.pos < touch_pos:
             print(self.pos)
             self.recognise_listing_and_process_it()
 
-
         # special-case: we have a touch followed by some output.
         # just do this one manually
         if self.pos < touch_pos + 1:
@@ -61,5 +61,5 @@ def test_listings_and_commands_and_output(self):
         self.check_final_diff(ignore=["moves", "Generated by Django 1.11"])
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     unittest.main()