18-124531.py

from functools import wraps
from inspect import getclosurevars


# WITH wraps

def hyphen_decorator(func):
    @wraps(func)
    def ret():
        print('----')
        func()
        print('----')
    return ret


def equals_decorator(func):
    @wraps(func)
    def ret():
        print('====')
        func()
        print('====')
    return ret


@hyphen_decorator
def underlying():
    print('beta')

underlying()
underlying = equals_decorator(underlying.__wrapped__)
underlying()


# WITHOUT wraps

def hyphen_decorator(func):
    def ret():
        print('----')
        func()
        print('----')
    return ret


def equals_decorator(func):
    @wraps(func)
    def ret():
        print('====')
        func()
        print('====')
    return ret


@hyphen_decorator
def underlying():
    print('beta')

underlying()
underlying = equals_decorator(getclosurevars(underlying).nonlocals['func'])
underlying()