save project

diy.py

@@ -10,7 +10,7 @@ print("禹亦的攻击力是："，yuyi.attack)
 print("屁屁的攻击力是："pp.attack)
 
 
-def upgrade():
+def upgrade(self):
     yuyi.level = yuyi.level + 1
     yuyi.hp = yuyi.hp + 50
     yuyi.attack = yuyi.attack + 4