auto save

diy.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 = self.level+1
+        self.hp = self.hp + 50
+        self.attack = self.attack + 5
+yase = Hero('亚瑟',300,20)
+print(yase.hp)
+print(yase.level)
+print(yase.attack)
+yase.upgrade()
+print(yase.hp)
+print(yase.level)
+print(yase.attack)
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