Fix for derived classes without annotations

Fatal1ty · Dec 13, 2019 · b31548e · b31548e
1 parent 2f9b3af
commit b31548e
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diff --git a/mashumaro/serializer/base/metaprogramming.py b/mashumaro/serializer/base/metaprogramming.py
@@ -53,7 +53,7 @@ def namespace(self):
 
     @property
     def annotations(self):
-        return self.namespace['__annotations__']
+        return self.namespace.get('__annotations__', {})
 
     def __get_fields(self, recursive=True):
         fields = {}

diff --git a/tests/test_data_types.py b/tests/test_data_types.py
@@ -670,5 +670,10 @@ class B(A, DataClassDictMixin):
     class C(B, DataClassDictMixin):
         y: int = 4
 
+    @dataclass
+    class D(C):
+        pass
+
     assert B.from_dict({'x': 0}) == B(x=0, y=1, z=3)
     assert C.from_dict({'x': 0}) == C(x=0, y=4, z=3)
+    assert D.from_dict({'x': 0}) == D(x=0, y=4, z=3)