title: Downloading huggingface pre-trained models
body: <p>Once I have downloaded a pre-trained model on a Colab Notebook, it disappears after I reset the notebook variables.
  Is there a way I can download the model to use it for a second occasion?</p>
  <pre><code>tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
  </code></pre>