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 update(self):
+        self.level=self.level+1
+        self.hp=self.hp+50
+        self.attack=self.attack+4
+liu=Hero('刘',300,20)
+liu.update()
+liu.update()
+print(liu.attack)
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