python——面向对象，烤土豆

"""
Date：2020.2.9

测试案例：烤地瓜
需求分析
1.烤的时间和对应的地瓜状态：
2.烤制过程
步骤：
 1.定义类, 地瓜属性，状态，烤的时间，调料
 2.定义方法，怎样烤制
 3.创建地瓜对象
"""


# 定义地瓜类
class SweetPotato:
 def __init__(self):
 self.cook_time = 0
 self.cook_state = '生的'
 self.condiments = []

 def cook(self, time):
 """烤地瓜方法"""
 self.cook_time += time
 if 0 <= self.cook_time < 3:
 self.cook_state = '生的'
 elif 3 <= self.cook_time < 5:
 self.cook_state = '半生不熟的'
 elif 5 <= self.cook_time < 8:
 self.cook_state = '熟的'
 elif 8 <= self.cook_time:
 self.cook_state = '烤糊的'

 def add_condiments(self, condiment):
 self.condiments.append(condiment)

 def __str__(self):
 return f'这个地瓜的烤制时间：{self.cook_time}分钟，' \
 f'状态：{self.cook_state}，调料有{self.condiments}'


def main():
 digua1 = SweetPotato()
 print(digua1)
 digua1.cook(5)
 digua1.add_condiments('盐')
 print(digua1)
 digua1.add_condiments('辣椒面儿')
 print(digua1)


if __name__ == '__main__':
 main()