I’ve written a couple of bits of code I’ve reused

pickleHelper.py

This simplifies using pickle objects in code

import pickle

def writeToPickle(_pickleName, _object):
        with open(_pickleName, 'wb') as file:
            pickle.dump(_object, file)


def checkPickle(_pickleName):
        try:
            with open(_pickleName,"rb") as file:
                return pickle.load(file)
        except IOError:
            return False


def updatePickleInPlace(_pickleName, _object):
        existing = checkPickle(_pickleName)
        if existing!=False: 
            existing = checkPickle(_pickleName)
            for key, val in _object.items():
                existing[key]=val
            writeToPickle(_pickleName, existing)   
        else:
            writeToPickle(_pickleName, _object)


tadoAuth.py

I’ve replaced a chunk of my home heating system with Tado, this is a simple function to return and store the bearer token for API requests to view and change the settings. It assumes you have TADOUSER/TADOPASS in an environment file.

import requests, json, datetime
from pickleHelper import checkPickle, updatePickleInPlace
from requests.utils import quote
import os 
from dotenv import load_dotenv

load_dotenv()

accessToken = ""
refreshToken = ""
expiresTime = datetime.datetime.now()
pickleFile = "auth.pickle"

def getTadoToken():
    username=os.getenv('TADOUSER')
    password=quote(os.getenv('TADOPASS'), safe='')
    url="https://auth.tado.com/oauth/token?client_id=tado-web-app&grant_type=password&scope=home.user&username="+str(username)+"&password="+password+"&client_secret=wZaRN7rpjn3FoNyF5IFuxg9uMzYJcvOoQ8QWiIqS3hfk6gLhVlG57j5YNoZL2Rtc"
 #Don't worry, this isn't my secret!
    response = requests.post(url)
    accessToken=response.json()["access_token"]
    refreshToken=response.json()["refresh_token"]
    expiresTime=datetime.datetime.now() + datetime.timedelta(seconds=response.json()["expires_in"])
    updatePickleInPlace(pickleFile, {"accessToken":accessToken, "refreshToken":refreshToken, "expiresTime":expiresTime})
    return accessToken

def returnTadoToken():
    depickle = checkPickle(pickleFile)
    if (depickle==False):
        return  getTadoToken()
    if (datetime.datetime.now() > depickle["expiresTime"]):
        return  getTadoToken()
    else:
        return depickle["accessToken"]