Unable to install pygraphviz (windows)

[ZeynabRostami]

Hi First of all, thanks for such an amazing project. I want to run the pretrained models but when I do It keeps showing this error:

Traceback (most recent call last): File "C:\Python39\lib\site-packages\networkx\drawing\nx_agraph.py", line 279, in pygraphviz_layout import pygraphviz File "C:\Python39\lib\site-packages\pygraphviz_init_.py", line 56, in from .agraph import AGraph, Node, Edge, Attribute, ItemAttribute, DotError File "C:\Python39\lib\site-packages\pygraphviz\agraph.py", line 20, in from . import graphviz as gv File "C:\Python39\lib\site-packages\pygraphviz\graphviz.py", line 13, in from . import _graphviz ImportError: DLL load failed while importing _graphviz: The specified module could not be found.

The above exception was the direct cause of the following exception:

Traceback (most recent call last): File "C:\Users\z.rostami\PycharmProjects\housegan\variation_bbs_with_target_graph_segments_suppl.py", line 232, in graph_arr = draw_graph([real_nodes, eds.detach().cpu().numpy()]) File "C:\Users\z.rostami\PycharmProjects\housegan\variation_bbs_with_target_graph_segments_suppl.py", line 70, in draw_graph pos = nx.nx_agraph.graphviz_layout(G_true, prog='neato') File "C:\Python39\lib\site-packages\networkx\drawing\nx_agraph.py", line 237, in graphviz_layout return pygraphviz_layout(G, prog=prog, root=root, args=args) File "C:\Python39\lib\site-packages\networkx\drawing\nx_agraph.py", line 281, in pygraphviz_layout raise ImportError("requires pygraphviz " "http://pygraphviz.github.io/") from e ImportError: requires pygraphviz http://pygraphviz.github.io/

I spend a lot of time setting up Graphviz and pygraphviz successfully and I think I did! But the problem with pygraphviz still exists. Isn't there any way to setup these libraries on Windows? Should I install Anaconda just for one library? Or install a VMware and clone the project in Linux ?! Has anyone installed pygraphviz in Windows?

[ennauata]

Hello @ZeinabRostami, I am not a windows user so I may not be able to help much, but I would try installing Anaconda. Overall I find Anaconda good for installing new packages so it could be helpful not only for pygrahviz, but for other packages you may want to install in the future.

[rickkk856]

1 - Make sure you downloaded Visual C/C++, e.g. from here: https://visualstudio.microsoft.com/visual-cpp-build-tools/

2 - Download and Install graphviz packagefiles https://gitlab.com/graphviz/graphviz/-/package_files/6164164/download

3 - Run in terminal python -m pip install --global-option=build_ext --global-option="-IC:\Program Files\Graphviz\include" --global-option="-LC:\Program Files\Graphviz\lib" pygraphviz

---------------- I made it using a conda enviroment

other sugestions like conda install graphviz pygraphviz did not work out.

[ZeynabRostami]

Hi rickkk856 I really appreciate your attention! I managed to run your awesome project using google colab and it helped me a lot with my project. I will try your recent suggestion as it's more efficient to run the project locally. Thanks again 😁

On Wed, Feb 10, 2021, 9:44 PM Ricardo Cesar Rodrigues < [email protected]> wrote:

1 - Make sure you downloaded Visual C/C++, e.g. from here: https://visualstudio.microsoft.com/visual-cpp-build-tools/

[image: image] https://user-images.githubusercontent.com/62864640/107552221-edec4580-6bb1-11eb-8255-68b6e785fc83.png

2 - Download and Install graphviz packagefiles https://gitlab.com/graphviz/graphviz/-/package_files/6164164/download

3 - Run in terminal python -m pip install --global-option=build_ext --global-option="-IC:\Program Files\Graphviz\include" --global-option="-LC:\Program Files\Graphviz\lib" pygraphviz

[image: image] https://user-images.githubusercontent.com/62864640/107552670-94d0e180-6bb2-11eb-9524-ee44da910cbc.png

---------------- I made it using a conda enviroment

other sugestions like conda install graphviz pygraphviz did not work out.

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[lbertolotti]

Shouldn't there be a "pip install graphviz 64" or something like that?

[hhoppe]

See also https://github.com/pygraphviz/pygraphviz/issues/186