pygraphviz ValueError:在路径中找不到程序点 [英] pygraphviz ValueError: Program dot not found in path

问题描述

问题是: 我在Windows7上，已经安装了pygraphviz库和Graphviz应用程序(Graphviz应用程序位于"C:\ Program Files"中).当我在python上运行程序时，我收到以下消息:

the problem is: I am on Windows7 and I've installed pygraphviz library and Graphviz application(Graphviz application is in "C:\Program Files"). When I run my program on python I have the following message:

g.draw(filename,prog='dot')
  File "C:\Python27\lib\site-packages\pygraphviz\agraph.py", line 1418, in draw
    data=self._run_prog(prog,args)
  File "C:\Python27\lib\site-packages\pygraphviz\agraph.py", line 1248, in _run_prog
    runprog=self._get_prog(prog)
  File "C:\Python27\lib\site-packages\pygraphviz\agraph.py", line 1236, in _get_prog
    raise ValueError("Program %s not found in path."%prog) 
ValueError: Program dot not found in path.

我该如何解决这个问题?

How can I solve this problem?

推荐答案

您需要将带有graphviz二进制文件的目录添加到PATH.

You need to add the directory with graphviz binaries to PATH.

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