title: failed to execute ['dot', '-Kdot', '-Tsvg'], make sure the Graphviz executables are on your systems' PATH
body: <p>I used this with my decision tree model on my database :</p>
  <pre><code>dot_data = tree.export_graphviz(pipeline.named_steps['classifier'], out_file=None, 
                           feature_names = categorical_feature_names + numerical_features,
                           class_names=[str(el) for el in pipeline.named_steps.classifier.classes_],  
                           filled=True, rounded=True,  
                           special_characters=True)  
  graph = graphviz.Source(dot_data) 
  graph
  </code></pre>
  <p>And it give me this error :</p>
  <pre><code>failed to execute ['dot', '-Kdot', '-Tsvg'], make sure the Graphviz executables are on your systems' PATH
  </code></pre>
  <p>I read here than I needed it to install it on my notebook to have the proper path : <a href="https://github.com/xflr6/graphviz/issues/68" rel="nofollow noreferrer">https://github.com/xflr6/graphviz/issues/68</a></p>
  <p>I dit it like that : conda install -c conda-forge python-graphviz</p>
  <p>And like that : conda install python-graphviz</p>
  <p>Botk worked but None of them resolve the error and I still got her.</p>
  <p>Someove have an idea how to resolve this error ?</p>
  <p>Thank you.</p>