Get email for google Cuenta

# If modifying these scopes, delete the file token.pickle.
SCOPES = [ 
    'openid',
    'https://www.googleapis.com/auth/userinfo.email',
]

def get_user_info(credentials):
    """Send a request to the UserInfo API to retrieve the user's information.
        user_email = get_user_info(credentials)['email']
    Args:
        credentials: oauth2client.client.OAuth2Credentials instance to authorize the
                    request.
    Returns:
        User information as a dict.
    """
    user_info_service = build(serviceName='oauth2', version='v2', credentials=credentials)
    user_info = None
    try:
        user_info = user_info_service.userinfo().get().execute()
    except errors.HttpError, e:
        logging.error('An error occurred: %s', e)
    if user_info and user_info.get('id'):
        return user_info
    else:
        raise Exception("El user no tiene correo en su cuenta de google")