def get_ptb_words():
 train = _retrieve_ptb_words('train.npz', _train_url)
 valid = _retrieve_ptb_words('valid.npz', _valid_url)
 test = _retrieve_ptb_words('test.npz', _test_url)
 return (train, valid, test)

def get_ptb_words ( ) : train = _retrieve_ptb_words ( 'train.npz' , _train_url ) valid = _retrieve_ptb_words ( 'valid.npz' , _valid_url ) test = _retrieve_ptb_words ( 'test.npz' , _test_url ) return ( train , valid , test )
gets the penn tree bank dataset as long word sequences .