auto save

diy2.py

+class Hero:
+    def __init__(self,name,hp,sttack):
+        self.level=1
+        self.name = name
+        self.hp = hp
+        self.sttack = sttack
+    def upgrade(self)
+        self.level = self.level+1
+        self.hp = self.hp + 50
+        self.attack = self.attack+4
+
+yase = Hero('亚瑟',300,20)
+houyi = Hero('后裔',250,23)
+