code: def _load_fast(filename):
          
          it = json.load(open("{}_items.json".format(filename)))
          words, unk_index, name = it["items"], it["unk_index"], it["name"]
          vectors = np.load(open("{}_vectors.npy".format(filename), 'rb'))
          return words, unk_index, name, vectors
docs: Sub for fast loader.