formatted list serializer errors in dict format

Author: p-r-a-v-i-n

rest_framework/serializers.py

@@ -688,18 +688,19 @@ def to_internal_value(self, data):
             }, code='min_length')
 
         ret = []
-        errors = []
+        errors = {}
+        index = 0
 
         for item in data:
             try:
                 validated = self.run_child_validation(item)
             except ValidationError as exc:
-                errors.append(exc.detail)
+                errors[index] = exc.detail
             else:
                 ret.append(validated)
-                errors.append({})
+            index += 1
 
-        if any(errors):
+        if errors:
             raise ValidationError(errors)
 
         return ret

tests/test_serializer_lists.py

@@ -781,7 +781,7 @@ class TestListSerializerDictErrorBehavior:
     """
     Tests for the proposed dict-based error structure for ListSerializer,
     and consistency with ListField.
-    
+
     https://github.com/encode/django-rest-framework/issues/7279
     """
 
@@ -847,7 +847,7 @@ def test_listserializer_and_listfield_consistency(self):
         assert isinstance(errors["list_serializer"], dict)
         assert isinstance(errors["list_field"], dict)
 
-        assert set(errors["list_serializer"].keys()) == {0, 1,}
+        assert set(errors["list_serializer"].keys()) == {1,3}
         assert set(errors["list_field"].keys()) == {1, 3}
 
         assert errors["list_serializer"][1] == {