How to use the particle.particle.TokenException function in particle

def __init__(self, message, errors=None):
        super(TokenException, self).__init__(message)
        self.errors = errors

def get_new_token(self):
        url = self.API_PREFIX + '/oauth/token'
        payload = {'username': self.username,
                   'password': self.password,
                   'grant_type': 'password', }
        token_response = requests.post(url, auth=('particle', 'particle'), data=payload)
        if token_response.ok:
            data = token_response.json()
            self.token_list = self.get_token_list()
            return data
        else:
            raise TokenException(token_response.reason)

def get_session(self):
        if not self.session:
            self.session = requests.session()

        if self.current_token_is_valid():
                self.session.headers.update({
                    'Authorization': "Bearer %s" % self.token,
                })
        else:
            raise TokenException("Token has expired, please re instantiate the class")
        return self.session

def get_device_list(self):
        url = self.get_api_prefix() + 'devices'
        session = self.get_session()
        # session = requests.session()
        device_list = session.get(url)
        if device_list.ok and device_list.status_code == 200:
            return device_list.json()
        else:
            TokenException(device_list.reason, device_list.status_code)