Update rest_framework/validators.py

Co-authored-by: Paolo Melchiorre <[email protected]>

Author: auvipy

rest_framework/validators.py

@@ -185,10 +185,7 @@ def __call__(self, attrs, serializer):
                 if field in self.fields and value != getattr(serializer.instance, field)
             ]
 
-        condition_kwargs = {
-            source: attrs[source]
-            for source in self.condition_fields
-        }
+        condition_kwargs = {source: attrs[source] for source in self.condition_fields}
         if checked_values and None not in checked_values and qs_exists_with_condition(queryset, self.condition, condition_kwargs):
             field_names = ', '.join(self.fields)
             message = self.message.format(field_names=field_names)