python 3.7 win10 spyder 安装 graphviz

python 3.7 spyder 安装 graphviz

下载网址：http://www.graphviz.org/download/

点进去，找到

我是64位系统，下载安装

安装时有个选项，是加入环境变量的，望着选择添加环境变量。这样后面就不用手动添加了。

安装完，运行CMD → dot -version

C:\Users\tom>dot
There is no layout engine support for "dot"
Perhaps "dot -c" needs to be run (with installer's privileges) to register the plugins?

有问题，再运行 dot -c

C:\Users\tom>dot -c
Error: failed to open C:\Program Files\Graphviz\bin\config6 for write.

还是不行……

网上查了一下，要使用管理员打开终端……

运行 dot -c

再运行 dot -version 

成功……

C:\Windows\system32>dot -c

C:\Windows\system32>dot -version
dot - graphviz version 2.44.2~dev.20200912.0955 (20200912.0955)
libdir = "C:\Program Files\Graphviz\bin"
Activated plugin library: gvplugin_dot_layout.dll
Using layout: dot:dot_layout
Activated plugin library: gvplugin_core.dll
Using render: dot:core
Using device: dot:dot:core
The plugin configuration file:
        C:\Program Files\Graphviz\bin\config6
                was successfully loaded.
    render      :  cairo dot dot_json fig gdiplus json json0 map mp pic ps svg tk vml xdot xdot_json
    layout      :  circo dot fdp neato nop nop1 nop2 osage patchwork sfdp twopi
    textlayout  :  textlayout
    device      :  bmp canon cmap cmapx cmapx_np dot dot_json emf emfplus eps fig gif gv imap imap_np ismap jpe jpeg jpg json json0 metafile mp pdf pic plain plain-ext png ps ps2 svg tif tiff tk vml xdot xdot1.2 xdot1.4 xdot_json
    loadimage   :  (lib) bmp eps gif jpe jpeg jpg png ps svg