rewrite logic removed in pydantic#1755

PrettyWood · Dec 2, 2020 · d94a53a · d94a53a
1 parent 63c3fd6
commit d94a53a
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/pydantic/main.py b/pydantic/main.py
@@ -788,12 +788,12 @@ def _iter(
         value_include = ValueItems(self, include) if include else None
 
         for field_key, v in self.__dict__.items():
-            if (
-                (allowed_keys is not None and field_key not in allowed_keys)
-                or (exclude_none and v is None)
-                or (exclude_defaults and getattr(self.__fields__.get(field_key), 'default', _missing) == v)
-            ):
+            if (allowed_keys is not None and field_key not in allowed_keys) or (exclude_none and v is None):
                 continue
+            if exclude_defaults:
+                model_field = self.__fields__.get(field_key)
+                if not getattr(model_field, 'required', True) and getattr(model_field, 'default', _missing) == v:
+                    continue
             if by_alias and field_key in self.__fields__:
                 dict_key = self.__fields__[field_key].alias
             else: