Graphviz.Source not rendering in Jupyter Notebook

Question

After exporting a .dot file using scikit-learn's handy export_graphviz function.

I am trying to render the dot file using Graphviz into a cell in my Jupyter Notebook:

import graphviz
from IPython.display import display

with open("tree_1.dot") as f:
    dot_graph = f.read()
display(graphviz.Source(dot_graph))

However the out[ ] is just an empty cell.

I am using graphviz 0.5 (pip then conda installed), iPython 5.1, and Python 3.5 The dot file looks correct here are the first characters:

digraph Tree {\nnode [shape=box, style="filled", color=

iPython display seems to work for other objects including Matplotlib plots and Pandas dataframes.

I should note the example on Graphviz' site also doesn't work.

Answer 1

It's possible that since you posted this, changes were made so you might want to update your libraries if that's possible.

The versions of relevance here I used are:

Python 2.7.10

IPython 5.1.0

graphviz 0.7.1

If you have a well formed .dot file, you can display it to the jupyter out[.] cell by the following:

import graphviz

with open("tree_1.dot") as f:
    dot_graph = f.read()

# remove the display(...)

graphviz.Source(dot_graph)