安装相应类库
graphviz windows : http://www.graphviz.org/pub/graphviz/stable/windows/graphviz-2.38.msi
或
http://www.graphviz.org/pub/graphviz/stable/windows/graphviz-2.38.zip
pygraphviz windows:
http://www.lfd.uci.edu/~gohlke/pythonlibs/#pygraphviz
具体连接根据操作系统版本和python版本来下载：
pygraphviz‑1.3.1‑cp27‑none‑win32.whl
pygraphviz‑1.3.1‑cp27‑none‑win_amd64.whl
pygraphviz‑1.3.1‑cp34‑none‑win32.whl
pygraphviz‑1.3.1‑cp34‑none‑win_amd64.whl
如我用的是win32 python 2.7
http://www.lfd.uci.edu/~gohlke/pythonlibs/vu0h7y4r/pygraphviz-1.3.1-cp27-none-win32.whl
环境变量
将 graphviz 的安装路径下的bin目录添加了环境变量Path中。
执行python程序
A=pgv.AGraph(directed=True,strict=True)
A.add_edge(1,2)
A.add_edge(1,3)
A.add_edge(2,4)
A.add_edge(2,5)
A.add_edge(5,6)
A.add_edge(5,7)
A.add_edge(3,8)
A.add_edge(3,9)
A.add_edge(8,10)
A.add_edge(8,11)
A.graph_attr['epsilon']='0.01'
print A.string() # print dot file to standard output
A.write('fooOld.dot')
A.layout('dot') # layout with dot
A.draw('a.png') # write to file
即可绘制出图片
