title: NameError: name 'sklearn' is not defined
body: <p>I am running a feed forward neural network and want to get a confusion matrix with the line</p>
  
  <pre class="lang-py prettyprint-override"><code>sklearn.metrics.confusion_matrix(goldLabel_array, predictions, sample_weight=None, labels=None)
  </code></pre>
  
  <p>But when I am running it, it gives me the error message in the headline.
  I installed scikit-learn and sklearn. WhenI am running 'pip list', sklearn is listed, but with the version 0.0. When I am running conda install sklearn it gives me the following:</p>
  
  <pre>
  Collecting package metadata (current_repodata.json): done
  Solving environment: failed with current_repodata.json, will retry with next repodata source.
  Collecting package metadata (repodata.json): done
  Solving environment: failed
  
  PackagesNotFoundError: The following packages are not available from current channels:
  
    - sklearn
  
  Current channels:
  
    - https://conda.anaconda.org/loopbio/win-64
    - https://conda.anaconda.org/loopbio/noarch
    - https://repo.anaconda.com/pkgs/main/win-64
    - https://repo.anaconda.com/pkgs/main/noarch
    - https://repo.anaconda.com/pkgs/r/win-64
    - https://repo.anaconda.com/pkgs/r/noarch
    - https://repo.anaconda.com/pkgs/msys2/win-64
    - https://repo.anaconda.com/pkgs/msys2/noarch
    - https://conda.anaconda.org/conda-forge/win-64
    - https://conda.anaconda.org/conda-forge/noarch
  
  To search for alternate channels that may provide the conda package you're
  looking for, navigate to
  
      https://anaconda.org
  
  and use the search bar at the top of the page. </pre>