save project

diy.py

 class Hero:
-    def__init__(self,name,hp,attack):
+    def__init__(self , name , hp , attack ):
         self.level=1
         self.name=name
         self.hp=hp
@@ -8,7 +8,7 @@ class Hero:
     def upgrade(self):
         self.level=self.level+1    
         self.hp=self.hp+50
-        self.attack=self.attack=4
+        self.attack=self.attack+4
 
 houyi=Hero("后羿",240,23)
 houyi.upgrade()