Simple key authentication for Django REST framework

authentication.py

# -*- coding:utf-8 -*-
from django.conf import settings
from rest_framework import authentication
from rest_framework import exceptions


class ApiKeyAuthentication(authentication.BaseAuthentication):
    '''
    Аутентификация по задаанным в настройках ключам
    '''
    def authenticate(self, request):
        api_key = request.GET.get('api_key')
        if not api_key:
            # return None for skip to next backend
            raise exceptions.AuthenticationFailed('Invalid API key')

        if api_key in settings.API_KEYS:
            user = None
        else:
            raise exceptions.AuthenticationFailed('Invalid API key')
        return (user, None)