#Visualizing The data
#Using graph viz
import pydotplus
from sklearn.externals.six import StringIO
from IPython.display import Image
from sklearn.tree import export_graphviz
dot_data=StringIO()
export_graphviz(sk_tree, out_file=dot_data,filled =True, rounded=True)
graph=pydotplus.graph_from_dot_data(dot_data.getvalue())
Image(graph.create_png())
Can u please explain StringIO class .
Also I am getting an ERROR
InvocationException: GraphViz’s executables not found
Hey @chiragwxN, that’s bcz you need to install graphviz library first.
Use the following command to install it.
pip install graphviz
Hope this cleared your doubt. 
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