API Wrapper base service class

services.py

import requests
import json
import datetime
from .hooks import auth_check


class Service:
    """ Base Service Class """

    def __init__(self, username=None, password=None):
        # need to check both are defined values and not None
        self.username = username
        self.password = password
        self.session = requests.Session()
        self.session.hooks['response'] = [auth_check]

    def authenticate(self):

        credentials = {
            'username': self.username,
            'password': self.password
        }
        auth = {
            'auth': credentials
        }

        response = self.session.post(
            'https://whatever.com/auth',
            json.dumps(auth)
        ).json().get('response')

        if response.get('status') == "OK":
            self.auth_token = response.get('token')
            self.auth_timestamp = datetime.datetime.now()
            
            
# hooks
def auth_check(r):
    response = r.json().get('response')

    if response.get('error_id'):
        print "Need to Authenticate"