1.安装graphviz
sudo apt-get install graphviz
sudo apt-get install graphviz-dev
sudo apt-get install python-dev
pip install pygraphviz --install-option="--include-path=/usr/include/graphviz" --install-option="--library-path=/usr/lib/graphviz/"
pip install graphviz
2.安装ann_visualizer
pip install ann_visualizer