装饰器 各类装饰方法

#1 全局函数装饰类方法

 

def a_(fun):
    ******

class A(object):
    def __init__(self):
        self.a = 100

    @a_#使用全局函数装饰
    def func(self, num):
        ******

c = A()
c_ = c.func(100)
print(c_)　#  200
 

def a_(fun):
    def inner(self,num):
        c =fun(self,num)
        return c
    return inner

class A(object):
    def __init__(self):
        self.a = 100

    @a_#使用全局函数装饰
    def func(self,num):
        return self.a+num


c = A()
c_ = c.func(100)
print(c_)

#2 类方法装饰实例方法

 

class A(object):
    def __init__(self):
        self.a = 100

    def b_(fun):
        ******

    @b_#使用类内方法装饰
    def func1(self, num):
        ******
c_1 = c .func1(102)
print(c_1) # 202
 

 

class A(object):
    def __init__(self):
        self.a = 100

    def b_(fun):
        def inner(self,num):
            print('正在调用%s'%fun.__name__)
            a = fun(self, num)
            print(a)
            print('调用结束%s'%fun.__name__)
            return a
        return inner

    @b_#使用类内方法装饰
    def func1(self,num):
        return self.a +num

c_1 = c .func1(102)
print(c_1)# 202



#3 类装饰函数方法

 

class B(object):
    def __init__(self):
        ******

    def __***__()
        ******

@B#使用类来装饰
def cc(num,num1):
    return num+num1
d = cc (11,22) # 33
print(d)
 

 

class B(object):
    def __init__(self, func):
        self.func = func

    def __call__(self, *args, **kwargs):
        c = self.func(*args,**kwargs)
        return c

@B#使用类来装饰
def cc(num,num1):
    return num+num1
d = cc (11,22)
print(d)


#使用类装饰类
import time
class A(object):
    def __init__(self,func):
        self.a = 100
        self.func = func
    def __call__(self, *args, **kwargs):
        print(time.time())
        c = self.func(self,*args,**kwargs)
        print(c,'这是c')
        print(time.time())
        return c

class B:
    def __init__(self):
        self.a = 200

    @A
    def func(self,num):
        return num+self.a

b = B()
c = b.func(100)
print(c)#猜想结果是多少200