day 24 组合的补充

一、组合的补充：

　　1、类或对象可以做字典的key

　　2、对象中到底有什么？

# class Foo(object):
#
#     def __init__(self,age):
#         self.age = age
#
#     def display(self):
#         print(self.age)
#
# data_list = [Foo(8),Foo(9)]
# for item in data_list:
#     print(item.age,item.display())

# by luffycity.com

# ### 1. 类或对象是否能做字典的key
"""
class Foo:
    pass

user_info = {
    Foo:1,
    Foo():5
}

print(user_info)
"""
# ### 2. 对象中到底有什么?

# class Foo(object):
#
#     def __init__(self,age):
#         self.age = age
#
#     def display(self):
#         print(self.age)
#
# data_list = [Foo(8),Foo(9)]
# for item in data_list:
#     print(item.age,item.display())

# ### 3.

# class StarkConfig(object):
#
#     def __init__(self,num):
#         self.num = num
#
#     def changelist(self,request):
#         print(self.num,request)
#
# class RoleConfig(StarkConfig):
#
#     def changelist(self,request):
#         print('666')
#
# # 创建了一个列表,列表中有三个对象(实例)
# # [ StarkConfig对象(num=1), StarkConfig对象(num=2), RoleConfig对象(num=3) ]
# config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
# for item in config_obj_list:
#     print(item.num)

# 1 2 3

# ### 4.
# class StarkConfig(object):
#
#     def __init__(self,num):
#         self.num = num
#
#     def changelist(self,request):
#         print(self.num,request)
#
# class RoleConfig(StarkConfig):
#     pass
#
# # 创建了一个列表,列表中有三个对象(实例)
# # [ StarkConfig对象(num=1), StarkConfig对象(num=2), RoleConfig对象(num=3) ]
# config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
# for item in config_obj_list:
#     item.changelist(168)
#

# #### 5
# class StarkConfig(object):
#
#     def __init__(self,num):
#         self.num = num
#
#     def changelist(self,request):
#         print(self.num,request)
#
# class RoleConfig(StarkConfig):
#
#     def changelist(self,request):
#         print(666,self.num)
#
# # 创建了一个列表,列表中有三个对象(实例)
# # [ StarkConfig对象(num=1), StarkConfig对象(num=2), RoleConfig对象(num=3) ]
# config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
# for item in config_obj_list:
#     item.changelist(168)

# #### 6

# class StarkConfig(object):
#
#     def __init__(self,num):
#         self.num = num
#
#     def changelist(self,request):
#         print(self.num,request)
#
#     def run(self):
#         self.changelist(999)
#
# class RoleConfig(StarkConfig):
#
#     def changelist(self,request):
#         print(666,self.num)
#
# config_obj_list = [StarkConfig(1),StarkConfig(2),RoleConfig(3)]
# config_obj_list[1].run()
# config_obj_list[2].run() # 666 3

# #### 7

# class StarkConfig(object):
#
#     def __init__(self,num):
#         self.num = num
#
#     def changelist(self,request):
#         print(self.num,request)
#
#     def run(self):
#         self.changelist(999)
#
# class RoleConfig(StarkConfig):
#
#     def changelist(self,request):
#         print(666,self.num)
#
#
# class AdminSite(object):
#     def __init__(self):
#         self._registry = {}
#
#     def register(self,k,v):
#         self._registry[k] = v
#
# site = AdminSite()
# print(len(site._registry)) # 0
# site.register('range',666)
# site.register('shilei',438)
# print(len(site._registry)) # 2
#
# site.register('lyd',StarkConfig(19))
# site.register('yjl',StarkConfig(20))
# site.register('fgz',RoleConfig(33))
#
# print(len(site._registry)) # 5



# #### 8
# class StarkConfig(object):
#
#     def __init__(self,num):
#         self.num = num
#
#     def changelist(self,request):
#         print(self.num,request)
#
#     def run(self):
#         self.changelist(999)
#
# class RoleConfig(StarkConfig):
#
#     def changelist(self,request):
#         print(666,self.num)
#
# class AdminSite(object):
#     def __init__(self):
#         self._registry = {}
#
#     def register(self,k,v):
#         self._registry[k] = v
#
# site = AdminSite()
# site.register('lyd',StarkConfig(19))
# site.register('yjl',StarkConfig(20))
# site.register('fgz',RoleConfig(33))
# print(len(site._registry)) # 3
#
# for k,row in site._registry.items():
#     row.changelist(5)


### 9
# class StarkConfig(object):
#
#     def __init__(self,num):
#         self.num = num
#
#     def changelist(self,request):
#         print(self.num,request)
#
#     def run(self):
#         self.changelist(999)
#
# class RoleConfig(StarkConfig):
#
#     def changelist(self,request):
#         print(666,self.num)
#
# class AdminSite(object):
#     def __init__(self):
#         self._registry = {}
#
#     def register(self,k,v):
#         self._registry[k] = v
#
# site = AdminSite()
# site.register('lyd',StarkConfig(19))
# site.register('yjl',StarkConfig(20))
# site.register('fgz',RoleConfig(33))
# print(len(site._registry)) # 3
#
# for k,row in site._registry.items():
#     row.run()

## 10
#
# class UserInfo(object):
#     pass
#
# class Department(object):
#     pass
#
# class StarkConfig(object):
#
#     def __init__(self,num):
#         self.num = num
#
#     def changelist(self,request):
#         print(self.num,request)
#
#     def run(self):
#         self.changelist(999)
#
# class RoleConfig(StarkConfig):
#
#     def changelist(self,request):
#         print(666,self.num)
#
# class AdminSite(object):
#     def __init__(self):
#         self._registry = {}
#
#     def register(self,k,v):
#         self._registry[k] = v(k)
#
# site = AdminSite()
# site.register(UserInfo,StarkConfig)
# site.register(Department,StarkConfig)
# print(len(site._registry)) # 3
# for k,row in site._registry.items():
#     row.run()


# 总结:
"""
1. 对象中封装了什么?
2. self到底是谁?
"""

二、主动调用其它类的成员

　　方式一、

			class Base(object):
				def f1(self):
					print('5个功能')
			class Foo(object):
				def f1(self):
					print('3个功能')
					Base.f1(self)   执行完Foo中的方法，主动另外Base类的成员   
			obj = Foo()
			obj.f1()
			总结:
				Base.实例方法(自己传self)
				与继承无关		

　　方式二：

　　　　　　按照类的继承顺序，找下一个，与继承有关

class Base(object):
    def f1(self):
        print("5个功能")
class Foo(Base):
    def f1(self):
        print("3个功能")
        super().f1()   #按照继承顺序往上找        
obj = Foo()
obj.f1()

# by luffycity.com
""""""


"""
class Base(object):
    def f1(self):
        print('5个功能')
        
# obj = Base()
# Base.f1(obj)

obj = Base()
obj.f1()
         
"""


# ########### 方式一
# class Base(object):
#
#     def f1(self):
#         print('5个功能')
#
# class Foo(object):
#
#     def f1(self):
#         print('3个功能')
#         Base.f1(self)
#
# obj = Foo()
# obj.f1()


# ########### 方式二:按照类的继承顺序,找下一个.
"""
class Base(object):
    def f1(self):
        print('5个功能')

class Foo(Base):
    def f1(self):
        super().f1()
        print('3个功能')
        
obj = Foo()
obj.f1()
"""

# ########### 方式二:按照类的继承顺序,找下一个.
class Foo(object):
    def f1(self):
        super().f1()
        print('3个功能')

class Bar(object):
    def f1(self):
        print('6个功能')

class Info(Foo,Bar):
    pass

# obj = Foo()
# obj.f1()

obj = Info()
obj.f1()

三、特殊成员

class Foo(object):

    def __init__(self,a1,a2):
        self.a1 = a1
        self.a2 = a2
    
    def __call__(self, *args, **kwargs):
        print(11111,args,kwargs)
        return 123

    def __getitem__(self, item):
        print(item)
        return 8

    def __setitem__(self, key, value):
        print(key,value,111111111)

    def __delitem__(self, key):
        print(key)

    def __add__(self, other):
        return self.a1 + other.a2

    def __enter__(self):
        print('1111')
        return 999

    def __exit__(self, exc_type, exc_val, exc_tb):
        print('22222')
 1. 类名() 自动执行 __init__
# obj = Foo(1,2)

 2. 对象() 自动执行 __call__
# ret = obj(6,4,2,k1=456)

 3. 对象['xx']  自动执行 __getitem__
# ret = obj['yu']
# print(ret)

 4. 对象['xx'] = 11  自动执行 __setitem__
# obj['k1'] = 123

 5. del 对象[xx]     自动执行 __delitem__
# del obj['uuu']

 6. 对象+对象         自动执行 __add__
# obj1 = Foo(1,2)
# obj2 = Foo(88,99)
# ret = obj2 + obj1
# print(ret)

 7. with 对象        自动执行 __enter__ / __exit__
# obj = Foo(1,2)
# with obj as f:
#     print(f)
#     print('内部代码')

 8. 真正的构造方法
# class Foo(object):
#     def __init__(self, a1, a2):     # 初始化方法
#         """
#         为空对象进行数据初始化
#         :param a1:
#         :param a2:
#         """
#         self.a1 = a1
#         self.a2 = a2
#
       def __new__(cls, *args, **kwargs): # 构造方法
#         """
#         创建一个空对象
#         :param args:
#         :param kwargs:
#         :return:
#         """
#         return object.__new__(cls) # Python内部创建一个当前类的对象(初创时内部是空的.).
#
# obj1 = Foo(1,2)
# print(obj1)
#
# obj2 = Foo(11,12)
# print(obj2)