Added renamed() method to Serializable.

Signed-off-by: Lukas Prediger <lukas.prediger@rwth-aachen.de>

qctoolkit/serialization.py

@@ -447,6 +447,13 @@ def deserialize(cls, serializer: Optional['Serializer']=None, **kwargs) -> 'Seri
 
         return cls(**kwargs)
 
+    def renamed(self, new_identifier: str, registry: Optional[Dict]=None) -> 'Serializable':
+        """Returns a copy of the Serializable with its identifier set to new_identifier."""
+        data = self.get_serialization_data()
+        data.pop(Serializable.type_identifier_name)
+        data.pop(Serializable.identifier_name)
+        return self.deserialize(registry=registry, identifier=new_identifier, **data)
+
 
 class AnonymousSerializable:
     """Any object that can be converted into a serialized representation for storage and back which NEVER has an

tests/serialization_tests.py

@@ -133,6 +133,12 @@ def test_duplication_error(self):
         with self.assertRaises(RuntimeError):
             self.make_instance('blub', registry=registry)
 
+    def test_renamed(self) -> None:
+        registry = dict()
+        instance = self.make_instance('hugo', registry=registry)
+        renamed_instance = instance.renamed('ilse', registry=registry)
+        self.assert_equal_instance_except_id(instance, renamed_instance)
+
 
 class DummySerializableTests(SerializableTests, unittest.TestCase):
     @property