auto save

diy2.py

+class Hero:
+    def __init__(self,name,hp,attack):
+        self.level = 1
+        self.name = name
+        self.hp = hp
+        self.attack = attack
+    def upgrade(self):
+        self.level +=100 
+        self.hp +=100
+        self.attack +=100
+
+yase = Hero('亚瑟',200,20)
+yase.upgrade()
+yase.upgrade()
+print("attack",yase.attack)
+print("name",yase.name)
+print("hp",yase.hp)
+print("level",yase.level)
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