auto save

diy.py

@@ -11,3 +11,10 @@ print(yase.attack)
 print(chengyaojin.attack)
 
 
+def upgrade(self):
+    self.level = chengyaojin.level + 1
+    self.hp = chengyaojin.hp + 50
+    self.attack = chengyaojin.attack + 5
+chengyaojin.upgrade()
+print(chengyaojin.hp)
+