保证可用，打开时msi
Windows
Development Windows install packages
Stable 2.38 Windows install packages
Cygwin Ports* provides a port of Graphviz to Cygwin.
WinGraphviz* Win32/COM object (dot/neato library for Visual Basic and ASP).
Mostly correct notes
在keras可视化模型输出，使用下述函数报错
>>from keras.utils import plot_model
>>plot_model(model, to_file=‘model.png’)
OSError: `pydot` failed to call GraphViz.Please install [GraphViz] and ensure that its executables are in the $PATH.
