fix(utility): init "_attrs_fields" in "AttrsMixin.__init_subclass__"

PR Closed: #559
Graviti-AI · May 18, 2021 · dbb5494 · dbb5494
1 parent 1e02aa6
commit dbb5494
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/tensorbay/utility/attr.py b/tensorbay/utility/attr.py
@@ -57,11 +57,12 @@ class AttrsMixin:
 
     """
 
-    _attrs_fields: Dict[str, Field] = {}
-    _attrs_supports: Set[Any] = set()
+    _attrs_fields: Dict[str, Field]
+    _attrs_supports: Set[Any]
 
     def __init_subclass__(cls) -> None:
         for name, type_ in getattr(cls, "__annotations__", {}).items():
+            cls._attrs_fields = {}
             field = _get_field(cls, name, type_)
             if field:
                 cls._attrs_fields[name] = field