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()
 print("等级：",yase.level)