- Install pygraphviz in Windows
pip install --global-option=build_ext --global-option="-IC:/Program Files/Graphviz/include" --global-option="-LC:/Program Files/Graphviz/lib" pygraphviz
- Install pygraphviz in Linux/Mac OS
pip install pygraphviz
pip install --global-option=build_ext --global-option="-IC:/Program Files/Graphviz/include" --global-option="-LC:/Program Files/Graphviz/lib" pygraphviz
pip install pygraphviz