python语言学习笔记（四）-----面向对象1

class SweetPotato:
def __init__(self):
self.cookedlevel=0
self.cookedstring='生的'
self.condinments=[]

def __str__(self):
return '地瓜的状态{}({}),加入的配料有{}'.format(self.cookedstring,self.cookedlevel,self.condinments)

def cook(self,cook_time):
self.cookedlevel+=cook_time
if self.cookedlevel>=0 and self.cookedlevel<=3:
self.cookedstring='生的'
elif self.cookedlevel>3 and self.cookedlevel<=5:
self.cookedstring='半生不熟'
elif self.cookedlevel>5 and self.cookedlevel<=8:
self.cookedstring='熟了'
elif self.cookedlevel>8 :
self.cookedstring='糊了'

def add_condiments(self,item):
self.condinments.append(item)

digua=SweetPotato()
digua.cook(1)
print(digua)
digua.cook(1)
print(digua)
digua.cook(1)
print(digua)
digua.cook(1)
print(digua)
digua.add_condiments('甘梅粉')
digua.cook(1)
print(digua)
digua.add_condiments('芝士粉')
digua.cook(1)
print(digua)
digua.cook(1)
print(digua)
digua.cook(1)
print(digua)
digua.cook(1)
print(digua)
digua.cook(1)
print(digua)

地瓜的状态生的(1),加入的配料有[]
地瓜的状态生的(2),加入的配料有[]
地瓜的状态生的(3),加入的配料有[]
地瓜的状态半生不熟(4),加入的配料有[]
地瓜的状态半生不熟(5),加入的配料有['甘梅粉']
地瓜的状态熟了(6),加入的配料有['甘梅粉', '芝士粉']
地瓜的状态熟了(7),加入的配料有['甘梅粉', '芝士粉']
地瓜的状态熟了(8),加入的配料有['甘梅粉', '芝士粉']
地瓜的状态糊了(9),加入的配料有['甘梅粉', '芝士粉']
地瓜的状态糊了(10),加入的配料有['甘梅粉', '芝士粉']

案例（存放家具）：两种方式

class Home():
def __init__(self,new_area,new_info,new_addr):
self.area=new_area
self.info=new_info
self.addr=new_addr
self.left_area=new_area
self.contain_items=[]

def __str__(self):
return '房子的总面积是{},{},地址：{},包含的家具有{},剩余面积为{}'.format(self.area,self.info,self.addr,self.contain_items,self.left_area)

def add_furniture(self,item):
self.contain_items.append(item.info)
self.left_area-=item.area

class Bed():
def __init__(self,new_area,new_info):
self.area=new_area
self.info=new_info

def __str__(self):
return '{},面积为{}'.format(self.info,self.area)

my_home=Home(111,'四室两厅','双流航空港')
bed1=Bed(4,'席梦思')
print(bed1)
my_home.add_furniture(bed1)
print(my_home)

class Home():
def __init__(self,new_area,new_info,new_addr):
self.area=new_area
self.info=new_info
self.addr=new_addr
self.left_area=new_area
self.contain_items=[]

def __str__(self):
return '房子的总面积是{},{},地址：{},包含的家具有{},剩余面积为{}'.format(self.area,self.info,self.addr,self.contain_items,self.left_area)

def add_furniture(self,item):
self.contain_items.append(item.get_info())
self.left_area-=item.get_area()

class Bed():
def __init__(self,new_area,new_info):
self.area=new_area
self.info=new_info

def __str__(self):
return '{},面积为{}'.format(self.info,self.area)

def get_area(self):
return self.area

def get_info(self):
return self.info

my_home=Home(111,'四室两厅','双流航空港')
bed1=Bed(4,'席梦思')
print(bed1)
my_home.add_furniture(bed1)
print(my_home)

席梦思,面积为4
房子的总面积是111,四室两厅,地址：双流,包含的家具有['席梦思'],剩余面积为107