google_api_auth.py

import googleapiclient.errors
from googleapiclient.discovery import build #pip install google-api-python-client
from google_auth_oauthlib.flow import InstalledAppFlow #pip install google-auth-oauthlib
from google.auth.transport.requests import Request
from google.oauth2.credentials import Credentials
import os

TOKEN_NAME = "token.json" # Don't change

# Setup Google 
SCOPES = ["https://www.googleapis.com/auth/youtube.upload"]
os.environ["OAUTHLIB_INSECURE_TRANSPORT"] = "1"
client_secrets_file = "googleAPI.json"

def google_auth():
   # Handle GoogleAPI oauthStuff
    print("[ GoogleAuth ] - Start authenticating to Google API")
    credentials = None
    # The file token1.json stores the user's access and refresh tokens, and is
    # created automatically when the authorization flow completes for the first
    # time.
    if os.path.exists(TOKEN_NAME):
        credentials = Credentials.from_authorized_user_file(TOKEN_NAME, SCOPES)
    # If there are no (valid) credentials available, let the user log in.
    if not credentials or not credentials.valid:
        if credentials and credentials.expired and credentials.refresh_token:
            credentials.refresh(Request())
        else:
            flow = InstalledAppFlow.from_client_secrets_file(
                client_secrets_file, SCOPES)
            credentials = flow.run_console()
        # Save the credentials for the next run
        with open(TOKEN_NAME, 'w') as token:
            token.write(credentials.to_json())

    try:
        youtube = build('youtube', 'v3', credentials=credentials)
        print("[ GoogleAuth ] - Authentication successful")
        return youtube
    except googleapiclient.errors.HttpError as e:
        print("[ GoogleAuth ] - Authentication failed with error:" + str(e))
        return False