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GraphViz's executables not found on Windows 7 64-bit #65

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GoogleCodeExporter opened this issue Apr 13, 2015 · 20 comments
Closed

GraphViz's executables not found on Windows 7 64-bit #65

GoogleCodeExporter opened this issue Apr 13, 2015 · 20 comments
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enhancement wontfix

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@GoogleCodeExporter
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What steps will reproduce the problem?
1. Install pydot on Win 7 64
2. Try to run the graph write_png() method

What is the expected output? What do you see instead?

You'll see this:
    graph.write_png('example2_graph.png')
  File "build\bdist.win-amd64\egg\pydot.py", line 1809, in <lambda>
  File "build\bdist.win-amd64\egg\pydot.py", line 1911, in write
  File "build\bdist.win-amd64\egg\pydot.py", line 1953, in create
pydot.InvocationException: GraphViz's executables not found

What version of the product are you using? On what operating system?

Using graphviz 2.28 on Win 7 64-bit.

Please provide any additional information below.

It looks like graphviz uses a different registry setting for Win7 64:

    hkey = win32api.RegOpenKeyEx( win32con.HKEY_LOCAL_MACHINE, "SOFTWARE\Wow6432Node\AT&T Research Labs\Graphviz 2.28", 0, win32con.KEY_QUERY_VALUE )

Original issue reported on code.google.com by mike.naq...@gmail.com on 20 Jan 2012 at 4:46
@abhillis
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abhillis commented Apr 6, 2016 •
edited by johnyf
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To update GoogleCodeExplorer's April 13th comment above, I found this path now works:

return __find_executables("C:/Program Files (x86)/Graphviz2.38/bin")

@johnyf
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johnyf commented May 14, 2016

Same as #109.

@johnyf johnyf closed this as completed May 14, 2016
This was referenced May 14, 2016
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johnyf referenced this issue Jul 13, 2016
@johnyf
MAI: call dot in tests, instead of removed function find_graphviz
812e3c4
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@johnyf @GoogleCodeExporter @abhillis