deco

decorate.py

def log(f):
    def wrapper():
        try:
            print("in")
            return f()
        finally:
            print("out")
    return wrapper

def logvar(text):
    def deco(f):
        def wrapper():
            try:
                print("in", text)
                return f()
            finally:
                print("out", text)

        return wrapper
    return deco

@log
def func1():
    print("func1")

@logvar("test")
def func2():
    print("func2")

def func3():
    print("func3")

func1()
func2()

deco = logvar("test")
func3 = deco(func3)
func3()