Fix inherited typeddict attributes / config (#6981)

pydantic · Aug 1, 2023 · bd725c7 · bd725c7
1 parent e86b529
commit bd725c7
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Showing 2 changed files with 18 additions and 1 deletion.
diff --git a/pydantic/_internal/_generate_schema.py b/pydantic/_internal/_generate_schema.py
@@ -1046,7 +1046,12 @@ def _typed_dict_schema(self, typed_dict_cls: Any, origin: Any) -> core_schema.Co
                     code='typed-dict-version',
                 )
 
-            config = getattr(typed_dict_cls, '__pydantic_config__', None)
+            config: ConfigDict | None = None
+            for base in (typed_dict_cls, *typed_dict_cls.__orig_bases__):
+                config = getattr(base, '__pydantic_config__', None)
+                if config is not None:
+                    break
+
             with self._config_wrapper_stack.push(config):
                 core_config = self._config_wrapper.core_config(typed_dict_cls)
 

diff --git a/tests/test_types_typeddict.py b/tests/test_types_typeddict.py
@@ -866,6 +866,18 @@ class Model(TypedDict):
     assert ta.validate_python({'x': 'ABC'}) == {'x': 'abc'}
 
 
+def test_model_config_inherited() -> None:
+    class Base(TypedDict):
+        __pydantic_config__ = ConfigDict(str_to_lower=True)  # type: ignore
+
+    class Model(Base):
+        x: str
+
+    ta = TypeAdapter(Model)
+
+    assert ta.validate_python({'x': 'ABC'}) == {'x': 'abc'}
+
+
 def test_schema_generator() -> None:
     class LaxStrGenerator(GenerateSchema):
         def str_schema(self) -> CoreSchema: