feat: add python_annotation_test.py

python_annotation_test.py

@@ -0,0 +1,37 @@
+def attr(cls):
+    cls._attr1 = 'test'
+    return cls
+
+
+def attr2(*, name=None):
+    def attr2_cls(cls):
+        cls._attr_name_1 = name
+        return cls
+
+    return attr2_cls
+
+
+class Attr:
+    controllers = []
+
+    def __init__(self, *, name=None):
+        self.__name = name
+
+    def __call__(self, cls):
+        Attr.controllers.append(cls)
+        cls._attr_name_2 = self.__name
+        return cls
+
+
+@Attr(name='test2')
+@attr2(name='test1')
+@attr
+class Class1:
+    pass
+
+
+if __name__ == "__main__":
+    print(getattr(Class1, '_attr1'))
+    print(getattr(Class1, '_attr_name_1'))
+    print(getattr(Class1, '_attr_name_2'))
+    print(Attr.controllers)