saving

untitled/model.py

@@ -0,0 +1,23 @@
+class Cat:
+    def __init__(self, name):
+        self.name = name
+
+    def to_dict(self):
+        return {"name": self.name}
+
+    @staticmethod
+    def from_dict(data):
+        return Cat(data["name"])
+
+
+class Save:
+    def __init__(self, version, cat: Cat):
+        self.version = version
+        self.cat = cat
+
+    def to_dict(self):
+        return {"version": self.version, "cat": self.cat.to_dict()}
+
+    @staticmethod
+    def from_dict(data):
+        return Save(data["version"], Cat.from_dict(data["cat"]))