小编non*_*meg的帖子

问题是:我在Windows7上,我已经安装了pygraphviz库和Graphviz应用程序(Graphviz应用程序在"C:\ Program Files"中).当我在python上运行我的程序时,我有以下消息:

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？