save project

diy2.py

@@ -6,9 +6,9 @@ class Hero:
         self.attack=attack
 
     def upgrade():
-        yase.level=yase.level+1
-        yase.hp=yase.hp+50
-        yase.attack=yase.attack+4
+        self.level=yase.level+1
+        self.hp=yase.hp+50
+        self.attack=yase.attack+4
 
 houyi = Hero("后羿",240,23)
 houyi.upgrade()