diff --git a/samples/openapi3/client/petstore/python/petstore_api/model/foo_object.py b/samples/openapi3/client/petstore/python/petstore_api/model/foo_object.py
index 5c2113edd1c..b9fe267ca93 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/model/foo_object.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/model/foo_object.py
@@ -149,14 +149,18 @@ class FooObject(ModelNormal):
         self = super(OpenApiModel, cls).__new__(cls)
 
         if args:
-            raise ApiTypeError(
-                "Invalid positional arguments=%s passed to %s. Remove those invalid positional arguments." % (
-                    args,
-                    self.__class__.__name__,
-                ),
-                path_to_item=_path_to_item,
-                valid_classes=(self.__class__,),
-            )
+            for arg in args:
+                if isinstance(arg, dict):
+                    kwargs.update(arg)
+                else:
+                    raise ApiTypeError(
+                        "Invalid positional arguments=%s passed to %s. Remove those invalid positional arguments." % (
+                            args,
+                            self.__class__.__name__,
+                        ),
+                        path_to_item=_path_to_item,
+                        valid_classes=(self.__class__,),
+                    )
 
         self._data_store = {}
         self._check_type = _check_type
@@ -230,14 +234,18 @@ class FooObject(ModelNormal):
         _visited_composed_classes = kwargs.pop('_visited_composed_classes', ())
 
         if args:
-            raise ApiTypeError(
-                "Invalid positional arguments=%s passed to %s. Remove those invalid positional arguments." % (
-                    args,
-                    self.__class__.__name__,
-                ),
-                path_to_item=_path_to_item,
-                valid_classes=(self.__class__,),
-            )
+            for arg in args:
+                if isinstance(arg, dict):
+                    kwargs.update(arg)
+                else:
+                    raise ApiTypeError(
+                        "Invalid positional arguments=%s passed to %s. Remove those invalid positional arguments." % (
+                            args,
+                            self.__class__.__name__,
+                        ),
+                        path_to_item=_path_to_item,
+                        valid_classes=(self.__class__,),
+                    )
 
         self._data_store = {}
         self._check_type = _check_type