最佳答案
我在 Windows 8中安装了 GraphViz 2.32,并向 System PATH 变量添加了 C: Program Files (x86) Graphviz2.32 bin。Pydot 仍然无法找到它的可执行文件。
Traceback (most recent call last):
File "<pyshell#26>", line 1, in <module>
graph.write_png('example1_graph.png')
File "build\bdist.win32\egg\pydot.py", line 1809, in <lambda>
lambda path, f=frmt, prog=self.prog : self.write(path, format=f, prog=prog))
File "build\bdist.win32\egg\pydot.py", line 1911, in write
dot_fd.write(self.create(prog, format))
File "build\bdist.win32\egg\pydot.py", line 1953, in create
'GraphViz\'s executables not found' )
InvocationException: GraphViz's executables not found
我发现这个 https://code.google.com/p/pydot/issues/detail?id=65,但无法得到解决的问题。