title: Decision tree has 2 similar nodes
body: <p>I have created a decision tree using sklearn. </p>
  
  <pre><code>from sklearn import tree
  clf = tree.DecisionTreeClassifier(max_depth=3)
  clf = clf.fit(X, Y)
  </code></pre>
  
  <p>Parameters in dataframe X are - <code>'Company size'</code>, <code>'Industry_other'</code>, <code>'Account size'</code>, <code>'Country'</code>, and <code>'Use case 1'</code>.</p>
  
  <p>I am getting 2 similar nodes when trying to visualize the tree using <code>export_graphviz</code>:</p>
  
  <p><img src="https://i.stack.imgur.com/jZ6rp.png" alt="output from export_graphviz"></p>
  
  <p>What is the reason for getting similar nodes? How do I read this tree?</p>