4.py

class Hero():
    def __init__(self,name,hp,attack,level):
        self.name=name
        self.level=level
        self.hp=hp
        self.attack=attack
yase=Hero("垭瑟",300,20,1)
houyi=Hero("后羿",250,23,1)
print("垭瑟升级前攻击：",yase.attack)
print("垭瑟升级前血量：",yase.hp)
print("垭瑟升级前等级：",yase.level)
def Up_level(i,up):
    i.level=i.level+up
    i.hp=i.hp+up*50
    i.attack=i.attack+up*4
Up_level(yase,1)
print("-"*50)
print("垭瑟升级后攻击：",yase.attack)
print("垭瑟升级后血量：",yase.hp)
print("垭瑟升级后等级：",yase.level)