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graphvizpydotplus

Error : pydotplus.graphviz.InvocationException: GraphViz's executables not found

With Windows 10, Python 3.4 IDLE PyCharm I tried to visualize the Tree of my model but it didn't work and I had the error below :

import graphviz
from sklearn.tree import export_graphviz
from six import StringIO
from IPython.display import Image
import pydotplus

dot_data = StringIO()
export_graphviz(clf, out_file=dot_data,
                filled=True, rounded=True,
                special_characters=True,feature_names = list(X_train.columns) ,class_names=['0','1'])
graph = pydotplus.graph_from_dot_data(dot_data.getvalue())

graph.write_png('tree.png')
Image(graph.create_png())

The Error is :

# Error : pydotplus.graphviz.InvocationException: GraphViz's executables not found
Solution

  • Steps :

    • Install the App Graphviz (https://graphviz.org/download/)
    • Install graphviz ( pip install graphviz )
    • Install pydotplus ( pip install pydotplus ) It does not work without having the App in the right env path.