Getting following error while executing ml_scikitlearn_decision_tree_classification_simple.py :
Traceback (most recent call last):
File "ml_scikitlearn_decision_tree_classification_simple.py", line 54, in
graph.write_png('tree.png')
File "C:\Installers\Python\Python37\lib\site-packages\pydotplus\graphviz.py", line 1810, in
prog=self.prog: self.write(path, format=f, prog=prog)
File "C:\Installers\Python\Python37\lib\site-packages\pydotplus\graphviz.py", line 1918, in write
fobj.write(self.create(prog, format))
File "C:\Installers\Python\Python37\lib\site-packages\pydotplus\graphviz.py", line 1960, in create
'GraphViz's executables not found')
pydotplus.graphviz.InvocationException: GraphViz's executables not found