Use chain.from_iterable in class_validators.py

pydantic · Jun 17, 2020 · 83e01c0 · 83e01c0
1 parent 0cee311
commit 83e01c0
Showing 1 changed file with 3 additions and 5 deletions.
diff --git a/pydantic/class_validators.py b/pydantic/class_validators.py
@@ -164,11 +164,9 @@ def get_validators(self, name: str) -> Optional[Dict[str, Validator]]:
 
     def check_for_unused(self) -> None:
         unused_validators = set(
-            chain(
-                *[
-                    (v.func.__name__ for v in self.validators[f] if v.check_fields)
-                    for f in (self.validators.keys() - self.used_validators)
-                ]
+            chain.from_iterable(
+                (v.func.__name__ for v in self.validators[f] if v.check_fields)
+                for f in (self.validators.keys() - self.used_validators)
             )
         )
         if unused_validators: