30 装饰器终极版本（进阶）

def wrapper(func):     # 01 func--> f
    def inner1():     #04
        print("wrapper1,before func") #15
        func()       #16 f()
        print("wrapper1,after func") #18
    return inner1    #05

def wrapper2(func):      #02  func--> inner1
    def inner2():      #08
        print("wrapper2,before func")  #13
        func()   # 19 14 inner1()
        print("wrapper2,atrer func")#20
    return inner2    #09
@wrapper2     #10 07 f=wrapper2(f)  ==wrapper2(inner1) ==inner2
@wrapper1     #06 03 f=wrapper1(f)  ==inner1
def f():    # 11
    print("in f")#17

f()    # 12 inner2()21

import time
FLAGE = False
def timmer_out(flag):
    def timmer(func):
        def inner(*args,**kwargs):
            if flag:
                start = time.time()
                ret = func(*args,**kwargs)
                end = time.time()
                print(end-start)
                return ret
            else:
                ret = func(*args, **kwargs)
                return ret
        return inner
    return timmer
@timmer_out(FLAGE)
def wahaha():
    time.sleep(0.1)
    print("wahhhhahahahahh")
@timmer_out(FLAGE)
def erguotou():
    time.sleep(0.1)
    print("erguotoutoutotuou")
wahaha()
erguotou()