title: How are "feature_importances_" ordered in Scikit-learn's RandomForestRegressor
body: <p>If I run a model (called clf in this case), I get output that looks like this.  How can I tie this to the feature inputs that were used to train the classifier?</p>
  
  <pre><code>&gt;&gt;&gt; clf.feature_importances_
  
  array([ 0.01621506,  0.18275428,  0.09963659,... ])
  </code></pre>