[Python知识库]python day01面向对象

#下面是烤地瓜项目案例
class Sweetpotato(object):
    def __init__(self,time=0,status='生的'):
        self.time1=time
        self.potato_status=status
    def cook(self,time):
        if time<0:
            return
        self.time1+=time
        if (self.time1>=0) and (self.time1<4):
            self.potato_status='生的'
        elif (self.time1>=4) and (self.time1<6):
            self.potato_status='半生不熟'
        elif (self.time1>=6) and (self.time1<10):
            self.potato_status='熟了'
        else:
            self.potato_status='糊了'
    def __str__(self):
        return f'地瓜烤了{self.time1}分钟，地瓜{self.potato_status}'

sweet_potato=Sweetpotato()
sweet_potato.cook(2)
print(sweet_potato)
sweet_potato.cook(2)
print(sweet_potato)
sweet_potato.cook(2)
print(sweet_potato)
sweet_potato.cook(2)
print(sweet_potato)
sweet_potato.cook(2)
print(sweet_potato)
sweet_potato.cook(2)
print(sweet_potato)

?