save project

diy2.py

@@ -4,10 +4,10 @@ class Hero:
         self.name=name
         self.hp=hp
         self.attack=attack
-    def upgrade():
+    def upgrade(self):
         self.level+=1
         self.hp+=20
         self.attack+=4
 yase=Hero('yase',300,20)
-upgrade()
+yase.upgrade()
 print(yase.hp)
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