함수 데코레이터

# Functions within Functions

def hello(name = 'Jose'):

def greet():

return '\t This indise the greet() function'

def welcome():

return '\t This indise the welcome() function'

if name == 'Jose':

return greet

else:

return welcome

x = hello()

print(x())

# 결과

This inside the greet() function

# Functions as Arguments

def hello():

return "Hi! Jose!"

def other(func):

print("Other code goes here!")

print(func())

other(hello)

# 결과

Other code goes here!

Hi! Jose!

# Wrap Function

def new_decorator(func):

def wrap_func():

print("Code here, before executing the func")

func()

print("Code here will execute after the func()")

return wrap_func

def func_needs_decorator():

print("This function needs a decorator!")

func_needs_decorator = new_decorator(func_needs_decorator)

func_needs_decorator()

# 결과

Code here, before executing the func

This function needs a decorator!

Code here will execute after the func()

# 장식자 표기법을 사용해서 수동으로 데코레이터 할당을 대신함

def new_decorator(func):

def wrap_func():

print("Code here, before executing the func")

func()

print("Code here will execute after the func()")

return wrap_func

@new_decorator

def func_needs_decorator():

print("This function needs a decorator!")

func_needs_decorator()

# 결과

Code here, before executing the func

This function needs a decorator!

Code here will execute after the func()