Python基础（二十一）：面向对象深入了解

class Washer():
 
    # 定义初始化功能的函数
    def __init__(self):
        # 添加实例属性
        self.width = 500
        self.height = 800
    def print_info(self):
        # 类⾥⾯调⽤实例属性
        print(f'洗衣机的宽度是{self.width}, ⾼度是{self.height}')
haier1 = Washer()
haier1.print_info()

class Washer():
    def __init__(self, width, height):
        self.width = width
        self.height = height
    
    def print_info(self):
        print(f'洗衣机的宽度是{self.width}')
        print(f'洗衣机的⾼度是{self.height}')

haier1 = Washer(10, 20)
haier1.print_info()

haier2 = Washer(30, 40)
haier2.print_info()

class Washer():
    def __init__(self, width, height):
        self.width = width
        self.height = height
    
    def __str__(self):
        return '这是海尔洗衣机的说明书'

haier1 = Washer(10, 20)
# 这是海尔洗衣机的说明书
print(haier1)

class Washer():
    def __init__(self, width, height):
        self.width = width
        self.height = height

    def __del__(self):
        print(f'{self}对象已经被删除')
haier1 = Washer(10, 20)
# <__main__.Washer object at 0x000001E02D665588>对象已经被删除
del haier1

class SweetPotato():
    def __init__(self):
        # 被烤的时间
        self.cook_time = 0
        # 地⽠的状态
        self.cook_static = '⽣的'
        # 调料列表
        self.condiments = []

class SweetPotato():


    def cook(self, time):
        """烤地⽠的⽅法"""

        self.cook_time += time
        if 0 <= self.cook_time < 3:
            self.cook_static = '⽣的'
        elif 3 <= self.cook_time < 5:
            self.cook_static = '半⽣不熟'
        elif 5 <= self.cook_time < 8:
            self.cook_static = '熟了'
        elif self.cook_time >= 8:
            self.cook_static = '烤糊了'

class SweetPotato():
 
    def __str__(self):
        return f'这个地⽠烤了{self.cook_time}分钟, 状态是{self.cook_static}'

digua1 = SweetPotato()
print(digua1)
digua1.cook(2)
print(digua1)

class SweetPotato():

    def add_condiments(self, condiment):
        """添加调料"""
        self.condiments.append(condiment)

    def __str__(self):
        return f'这个地⽠烤了{self.cook_time}分钟, 状态是{self.cook_static}, 添加的调料有{self.condiments}'

digua1 = SweetPotato()
print(digua1)
digua1.cook(2)
digua1.add_condiments('酱油')
print(digua1)
digua1.cook(2)
digua1.add_condiments('辣椒⾯⼉')
print(digua1)
digua1.cook(2)
print(digua1)
digua1.cook(2)
print(digua1)

# 定义类
class SweetPotato():
    def __init__(self):
        # 被烤的时间
        self.cook_time = 0
        # 地⽠的状态
        self.cook_static = '⽣的'
        # 调料列表
        self.condiments = []
    def cook(self, time):
        """烤地⽠的⽅法"""
        self.cook_time += time
        if 0 <= self.cook_time < 3:
            self.cook_static = '⽣的'
        elif 3 <= self.cook_time < 5:
            self.cook_static = '半⽣不熟'
        elif 5 <= self.cook_time < 8:
            self.cook_static = '熟了'
        elif self.cook_time >= 8:
            self.cook_static = '烤糊了'

    def add_condiments(self, condiment):
        """添加调料"""
        self.condiments.append(condiment)

    def __str__(self):
        return f'这个地⽠烤了{self.cook_time}分钟, 状态是{self.cook_static}, 添加的调料有{self.condiments}'

digua1 = SweetPotato()
print(digua1)
digua1.cook(2)
digua1.add_condiments('酱油')
print(digua1)
digua1.cook(2)
digua1.add_condiments('辣椒⾯⼉')
print(digua1)
digua1.cook(2)
print(digua1)
digua1.cook(2)
print(digua1)

class Furniture():
    def __init__(self, name, area):
        # 家具名字
        self.name = name
        # 家具占地⾯积
        self.area = area

class Home():
    def __init__(self, address, area):
        # 地理位置
        self.address = address
        # 房屋⾯积
        self.area = area
        # 剩余⾯积
        self.free_area = area
        # 家具列表
        self.furniture = []

    def __str__(self):
        return f'房⼦坐落于{self.address}, 占地⾯积{self.area}, 剩余⾯积{self.free_area}, 家具有{self.furniture}'

    def add_furniture(self, item):
        """容纳家具"""

        if self.free_area >= item.area:
            self.furniture.append(item.name)
            # 家具搬⼊后，房屋剩余⾯积 = 之前剩余⾯积 - 该家具⾯积
            self.free_area -= item.area
        else:
            print('家具太大，剩余面积不足，⽆法容纳')

bed = Furniture('双⼈床', 6)
jia1 = Home('北京', 1200)
print(jia1)
jia1.add_furniture(bed)
print(jia1)
sofa = Furniture('沙发', 10)
jia1.add_furniture(sofa)
print(jia1)
ball = Furniture('篮球场', 1500)
jia1.add_furniture(ball)
print(jia1)