save project

diy2.py

@@ -5,9 +5,9 @@ class Hero:
         self.hp = hp
         self.attack = attack
     def upgrade(self):
-        self.level=yase.level+1
-        self.hp=yase.hp+50
-        self.attack=yase.attack+4
+        self.level=self.level+1
+        self.hp=self.hp+50
+        self.attack=self.attack+4
 yase=Hero("亚瑟",300,20)
 yase.upgrade()
 houyi=Hero("后羿",250,23)