python3之面向对象实例烤地瓜

#定义一个烤地瓜的类，烤地瓜时间可叠加，作料可叠加
class kaodigua:
    #初始化烤地瓜的一些属性
    def __init__(self):
        self.cookedString = "生的"
        self.cookedLevel = 0
        self.zuoliao =[] #储存地瓜的作料添加类别
    #实例化返回参数
    def __str__(self):
        return "现在地瓜状态是%s，加的作料有%s"%(self.cookedString,self.zuoliao)
    #定义烤地瓜的方法
    def cook(self,cookedTime):
        self.cookedLevel += cookedTime
        if self.cookedLevel >=0 and self.cookedLevel < 3:
            self.cookedString = "生的"
        elif self.cookedLevel >= 3 and self.cookedLevel < 5:
            self.cookedString = "本生不熟的"
        elif self.cookedLevel >= 5 and self.cookedLevel < 8:
            self.cookedString = "熟的"
        elif self.cookedLevel >=8:
            self.cookedString = "烤糊了"
    #定义添加作料的方法
    def jia_zuo_liao(self,zuoliao):
        self.zuoliao.append(zuoliao)

#创建一个烤地瓜对象
digua = kaodigua()
digua.cook(1)
digua.jia_zuo_liao("盐")
print(digua)
digua.cook(3)
digua.jia_zuo_liao("芥末")
print(digua)
digua.cook(5)
digua.jia_zuo_liao("白砂糖")
print(digua)