save project

diy.py

@@ -5,9 +5,9 @@ class Hero:
         self.hp=hp
         self.attack=attack
     def upgrade(self):
-        self.level=level.level+1
-        self.hp=hp.hp+50
-        self.attack=attack.attack+4
+        self.level=level+=1
+        self.hp=hp+=50
+        self.attack=attack+=4
 yase=Hero('亚瑟',300,20)
 yase.upgrade()
 print(yase.hp)
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