save project

diy2.py

@@ -4,8 +4,15 @@ class Hero:
         self.hp=hp
         self.Lv=1
         self.attack=attack
+    
+    def upgrade(self):
+        self.Lv=self.Lv+1
+        self.hp=self.hp+50
+        self.attack=self.attack+4
 
 yase=Hero("亚瑟",300,20)
 print(yase.hp)
 hoyi=Hero('后羿',250,23)
-print(hoyi.attack)
\ No newline at end of file
+print(hoyi.attack)
+yase.upgrade()
+print(yase.hp)