Support typing.Any as a seralization annotation

subiquity/common/serialize.py

@@ -191,7 +191,7 @@ class Serializer:
         if annotation is None:
             context.assert_type(type(None))
             return None
-        if annotation is inspect.Signature.empty:
+        if annotation is inspect.Signature.empty or annotation is typing.Any:
             return context.cur
         if attr.has(annotation):
             return self._serialize_attr(annotation, context)
@@ -258,7 +258,7 @@ class Serializer:
         if annotation is None:
             context.assert_type(type(None))
             return None
-        if annotation is inspect.Signature.empty:
+        if annotation is inspect.Signature.empty or annotation is typing.Any:
             return context.cur
         if attr.has(annotation):
             return self._deserialize_attr(annotation, context)

subiquity/common/tests/test_serialization.py

@@ -16,6 +16,7 @@
 import attr
 import datetime
 import enum
+import inspect
 import random
 import string
 import typing
@@ -143,6 +144,11 @@ class CommonSerializerTests:
             compact=self.serializer.compact, serialize_enums_by="value")
         self.assertSerialization(MyEnum, MyEnum.name, "value")
 
+    def test_serialize_any(self):
+        o = object()
+        self.assertSerialization(typing.Any, o, o)
+        self.assertSerialization(inspect.Signature.empty, o, o)
+
 
 class TestSerializer(CommonSerializerTests, unittest.TestCase):