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 += 100
+        self.attack += 10
+yase = Hero("亚瑟",200,20)
+houyi = Hero("后羿",150,30)
+yase.upgrade()
+print(yase.hp)
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