title: HTTPError: HTTP Error 403: Forbidden on Google Colab
body: <p>I am trying to download MNIST data in PyTorch using the following code:</p>
  
  <pre><code>train_loader = torch.utils.data.DataLoader(
        datasets.MNIST('data',
                        train=True,
                        download=True,
                        transform=transforms.Compose([
                           transforms.ToTensor(),
                           transforms.Normalize((0.1307,), (0.3081,))
                       ])),
        batch_size=128, shuffle=True)
  </code></pre>
  
  <p>and it gives the following error.</p>
  
  <pre class="lang-py prettyprint-override"><code>Downloading http://yann.lecun.com/exdb/mnist/train-images-idx3-ubyte.gz to data/MNIST/raw/train-images-idx3-ubyte.gz
  0it [00:00, ?it/s]
  ---------------------------------------------------------------------------
  HTTPError                                 Traceback (most recent call last)
  &lt;ipython-input-2-2fee284dabb8&gt; in &lt;module&gt;()
        5                       transform=transforms.Compose([
        6                          transforms.ToTensor(),
  ----&gt; 7                          transforms.Normalize((0.1307,), (0.3081,))
        8                      ])),
        9       batch_size=128, shuffle=True)
  
  11 frames
  /usr/lib/python3.6/urllib/request.py in http_error_default(self, req, fp, code, msg, hdrs)
      648 class HTTPDefaultErrorHandler(BaseHandler):
      649     def http_error_default(self, req, fp, code, msg, hdrs):
  --&gt; 650         raise HTTPError(req.full_url, code, msg, hdrs, fp)
      651 
      652 class HTTPRedirectHandler(BaseHandler):
  
  HTTPError: HTTP Error 403: Forbidden
  </code></pre>
  
  <p>How do I solve this? The notebook was working before, I'm trying to rerun it but I got this error.</p>