update

assessment1.py

@@ -0,0 +1,18 @@
+from Simulation import Simulation
+class Vault:
+    def __init__(self):
+        self._treasure = "gold"
+        self._attributes = dict(self.__dict__)
+        
+    def __setattr__(self, name, value):
+        if name != "_attributes" and name not in self._attributes:
+            print("attribute deleted!")
+        self._attributes[name] = value
+        super().__setattr__("_attributes", dict(self.__dict__))
+        
+    @property
+    def treasure(self):
+        if self.__dict__ != self._attributes:
+            print("attribute deleted!")
+        return self._treasure
+