from functools import wraps
from datetime import datetime

def my_decorator(f):
    #@wraps(f)
    def wrapper(*args, **kwds):
        return f(*args, **kwds)
    return wrapper


def myfunc():
    @my_decorator
    def inner():
        return None
    return inner

start = datetime.now()
for i in range(0, 100000):
    myfunc()()
print datetime.now() - start