Python高级（4）烤地瓜

#定义一个地瓜类，注意是大驼峰命名
class SweetPoato:
    #初始化，用来设置默认属性
    def __init__(self):
        self.cookedLevel = 0
        self.cookedString = "生"
        self.condiments = []

    def __str__(self):
        msg = "您的地瓜已经处于 " + self.cookedString + "的状态"
        if len(self.condiments)>0:
            msg = msg + " ,添加的佐料为:"
            for temp in self.condiments:
                msg = msg + temp + ", "
            #把两端多余的逗号去掉
            msg = msg.strip(", ")
        return msg

    # 用火去烤地瓜
    def cook(self,time):
        self.cookedLevel += time
        if self.cookedLevel>8:
            self.cookedString = "烤糊了"
        elif self.cookedLevel>5:
            self.cookedString = "熟了"
        elif self.cookedLevel > 3:
            self.cookedString = "半生不熟"
        else:
            self.cookedString = "生"

    def addCondiments(self,temp):
        self.condiments.append(temp)

#创建一个地瓜对象
digua = SweetPoato()
print(digua)

print("-----接下来开始 烤-----")
print("---烤两分钟---")
digua.cook(2)
print(digua)
print("---又烤两分钟---")
digua.cook(2)
print(digua)

print("---添加番茄酱---")
digua.addCondiments("番茄酱")
print(digua)

print("---添加芥末酱---")
digua.addCondiments("芥末酱")
print(digua)

本质

调用方法，传递数据，打印结果