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 += 1
+        self.hp += 50
+        self.attack += 4
+
+#yase = Hero("亚瑟",300,20)
+hoyi = Hero("后羿",240,23)
+hoyi.upgrade()
+#print(yase.hp)
+print(hoyi.hp)
+print(hoyi.level)
+print(hoyi.attack)
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