howto install pygraphviz on windows 10 64bit

Question

Has anyone succeeded in installing pygraphviz on windows 10 64bit? I tried anaconda with python 3.5 64bit & 32bit with no success.

Here is the error I am getting

Answer 1

Here's how I installed 64 bit PyGraphViz for Windows 10:

Downloaded and installed GraphViz from https://www2.graphviz.org/Packages/stable/windows/10/cmake/Release/x64/graphviz-install-2.44.1-win64.exe

Made sure I had Visual C++ installed, e.g. from here: https://visualstudio.microsoft.com/visual-cpp-build-tools/

Then I ran:

pip install --global-option=build_ext --global-option="-IC:\Program Files\Graphviz 2.44.1\include" --global-option="-LC:\Program Files\Graphviz 2.44.1\lib" pygraphviz

Then I had to add C:\Program Files\Graphviz 2.44.1\bin to my system path before import pygraphviz worked.

Finally, I had to run this in command prompt after the install to register plugins and be able to draw graphs: "C:\Program Files\Graphviz 2.44.1\bin\dot.exe" -c

Obviously, for a newer version of Graphviz you'll need to check and update all the paths given above.