测试gitnore

venv/Lib/site-packages/django/db/migrations/optimizer.py

@@ -28,7 +28,7 @@ class MigrationOptimizer:
         """
         # Internal tracking variable for test assertions about # of loops
         if app_label is None:
-            raise TypeError("app_label must be a str.")
+            raise TypeError('app_label must be a str.')
         self._iterations = 0
         while True:
             result = self.optimize_inner(operations, app_label)
@@ -43,10 +43,10 @@ class MigrationOptimizer:
         for i, operation in enumerate(operations):
             right = True  # Should we reduce on the right or on the left.
             # Compare it to each operation after it
-            for j, other in enumerate(operations[i + 1 :]):
+            for j, other in enumerate(operations[i + 1:]):
                 result = operation.reduce(other, app_label)
                 if isinstance(result, list):
-                    in_between = operations[i + 1 : i + j + 1]
+                    in_between = operations[i + 1:i + j + 1]
                     if right:
                         new_operations.extend(in_between)
                         new_operations.extend(result)
@@ -59,7 +59,7 @@ class MigrationOptimizer:
                         # Otherwise keep trying.
                         new_operations.append(operation)
                         break
-                    new_operations.extend(operations[i + j + 2 :])
+                    new_operations.extend(operations[i + j + 2:])
                     return new_operations
                 elif not result:
                     # Can't perform a right reduction.