问题是:我在 Windows7 上,并且我已经安装了 pygraphviz 库和 Graphviz 应用程序(Graphviz 应用程序位于“C:\Program Files”中)。当我在 python 上运行我的程序时,我收到以下消息:
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.
我怎么解决这个问题?