tarball path file error

[asterisk-ragavan]

MODEL_NAME = 'mobilenetv2_coco_cityscapes_trainfine'
#MODEL_NAME = 'xception65_cityscapes_trainfine'

_DOWNLOAD_URL_PREFIX = 'http://download.tensorflow.org/models/'
_MODEL_URLS = {
'mobilenetv2_coco_cityscapes_trainfine':
'deeplabv3_mnv2_cityscapes_train_2018_02_05.tar.gz',
'xception65_cityscapes_trainfine':
'deeplabv3_cityscapes_train_2018_02_06.tar.gz',
}
_TARBALL_NAME = 'deeplab_model.tar.gz'

model_dir = tempfile.mkdtemp()
tf.gfile.MakeDirs(model_dir)

download_path = os.path.join(model_dir, _TARBALL_NAME)
print('downloading model, this might take a while...')
urllib.request.urlretrieve(_DOWNLOAD_URL_PREFIX + _MODEL_URLS[MODEL_NAME], download_path)
print('download completed! loading DeepLab model...')

MODEL = DeepLabModel(download_path)
print('model loaded successfully!')