auto save

diy.py

+class Hero:
+    def __init__(self,name,hp,attack):
+        self.lev=2
+        self.hp=hp
+        self.attack=attack
+        self.name=name 
+
+    def upgrade(self):
+        self.lev=self.lev+1
+        self.hp=self.hp+100
+        self.attack=self.attack+250
+
+kt= Hero("狂铁",28291829773828872999999,250)
+print('狂铁的初始血量',kt.hp)
+kt.upgrade()
+kt.upgrade()
+print('升级2次后，血量为',kt.hp)
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