Fixed typos in migrations tests, comments, and error message.

django/core/management/commands/sqlmigrate.py

@@ -32,7 +32,7 @@ class Command(BaseCommand):
         # Get the database we're operating from
         connection = connections[options['database']]
 
-        # Load up an loader to get all the migration data, but don't replace
+        # Load up a loader to get all the migration data, but don't replace
         # migrations.
         loader = MigrationLoader(connection, replace_migrations=False)
 

django/db/migrations/loader.py

@@ -149,7 +149,10 @@ class MigrationLoader:
                 "There is more than one migration for '%s' with the prefix '%s'" % (app_label, name_prefix)
             )
         elif not results:
-            raise KeyError("There no migrations for '%s' with the prefix '%s'" % (app_label, name_prefix))
+            raise KeyError(
+                f"There is no migration for '{app_label}' with the prefix "
+                f"'{name_prefix}'"
+            )
         else:
             return self.disk_migrations[results[0]]
 

tests/migrations/test_loader.py

@@ -182,7 +182,7 @@ class LoaderTests(TestCase):
         msg = "There is more than one migration for 'migrations' with the prefix '0'"
         with self.assertRaisesMessage(AmbiguityError, msg):
             migration_loader.get_migration_by_prefix("migrations", "0")
-        msg = "There no migrations for 'migrations' with the prefix 'blarg'"
+        msg = "There is no migration for 'migrations' with the prefix 'blarg'"
         with self.assertRaisesMessage(KeyError, msg):
             migration_loader.get_migration_by_prefix("migrations", "blarg")
 
@@ -299,7 +299,7 @@ class LoaderTests(TestCase):
         loader.build_graph()
         self.assertEqual(num_nodes(), 3)
 
-        # Starting at 5 to 7 we are passed the squashed migrations
+        # Starting at 5 to 7 we are past the squashed migrations.
         self.record_applied(recorder, 'migrations', '5_auto')
         loader.build_graph()
         self.assertEqual(num_nodes(), 2)