title: Scikit-learn - Cannot load MNIST Original dataset using fetch_openml in Python
body: <p>I'm trying to load the MNIST Original dataset in Python. The <code>sklearn.datasets.fetch_openml</code> function doesn't seem to work for this. </p>
  
  <p>Here is the code I'm using-</p>
  
  <pre><code>from sklearn.datasets import fetch_openml
  dataset = fetch_openml("MNIST Original") 
  </code></pre>
  
  <p>I get this error-</p>
  
  <pre><code>File "generateClassifier.py", line 11, in &lt;module&gt;
    dataset = fetch_openml("MNIST Original")
    File "/home/inglorion/.local/lib/python3.5/site- 
  packages/sklearn/datasets/openml.py", line 526, in fetch_openml
  data_info = _get_data_info_by_name(name, version, data_home)
    File "/home/inglorion/.local/lib/python3.5/site- 
  packages/sklearn/datasets/openml.py", line 302, in 
  _get_data_info_by_name
      data_home)
    File "/home/inglorion/.local/lib/python3.5/site- 
  packages/sklearn/datasets/openml.py", line 169, in 
  _get_json_content_from_openml_api
      raise error
    File "/home/inglorion/.local/lib/python3.5/site- 
  packages/sklearn/datasets/openml.py", line 164, in 
  _get_json_content_from_openml_api
      return _load_json()
    File "/home/inglorion/.local/lib/python3.5/site- 
  packages/sklearn/datasets/openml.py", line 52, in wrapper
      return f()
    File "/home/inglorion/.local/lib/python3.5/site- 
  packages/sklearn/datasets/openml.py", line 160, in _load_json
      with closing(_open_openml_url(url, data_home)) as response:
    File "/home/inglorion/.local/lib/python3.5/site- 
  packages/sklearn/datasets/openml.py", line 109, in _open_openml_url
  with closing(urlopen(req)) as fsrc:
    File "/usr/lib/python3.5/urllib/request.py", line 163, in urlopen
      return opener.open(url, data, timeout)
    File "/usr/lib/python3.5/urllib/request.py", line 472, in open
      response = meth(req, response)
    File "/usr/lib/python3.5/urllib/request.py", line 582, in 
  http_response
      'http', request, response, code, msg, hdrs)
    File "/usr/lib/python3.5/urllib/request.py", line 510, in error
      return self._call_chain(*args)
    File "/usr/lib/python3.5/urllib/request.py", line 444, in 
  _call_chain
      result = func(*args)
    File "/usr/lib/python3.5/urllib/request.py", line 590, in 
  http_error_default
      raise HTTPError(req.full_url, code, msg, hdrs, fp)
          urllib.error.HTTPError: HTTP Error 400: Bad Request
  </code></pre>
  
  <p>How can I fix this? Alternately, is there any other way to load the MNIST dataset into Python?</p>
  
  <p>I'm using version 0.20.2 of <code>scikit-learn</code>.</p>
  
  <p>I'm relatively new to programming in general, so I would appreciate it if I could get a simple answer. Thanks!</p>