decorator for django oauth2app authencation

gistfile1.py

#-*- coding: utf-8 -*-

from oauth2app.models import AccessRange
from oauth2app.authenticate import JSONAuthenticator, AuthenticationException
import functools

def decorator(decorator):
    def func_wrapper(func):
        def functor(*args, **kw):
            functools.wraps(func)(decorator)
            return decorator(func, *args, **kw)
        return functor
    return func_wrapper

@decorator
def api(func, *args, **kw):
    authenticator = JSONAuthenticator()
    request = args[0]
    try:
        authenticator.validate(request)
    except AuthenticationException:
        return authenticator.error_response()
    args[0] = authenticator
    data = func(*args, **kw)
    return authenticator.response(data)

@decorator
def api_without_auth(func, *args, **kw):
    authenticator = JSONAuthenticator()
    data = func(*args, **kw)
    return authenticator.response(data)

def api_with_scope(key):
    def decorator(func):
        def func_wrapper(*args, **kw):
            scope = AccessRange.objects.get(key=key)
            authenticator = JSONAuthenticator(scope=scope)
            request = args[0]
            try:
                authenticator.validate(request)
            except AuthenticationException:
                return authenticator.error_response()
            args[0] = authenticator
            data = func(*args, **kw)
            return authenticator.response(data)
        return func_wrapper
    return decorator