ExecutableNotFound: failed to execute ['dot', '-Tsvg'], make sure the Graphviz executables are on yo

问题发生

在使用xgboost自带功能绘图的时候出现了问题

ExecutableNotFound: failed to execute ['dot', '-Tsvg'], make sure the Graphviz executables are on your systems' PATH

寻找原因

原因：graphviz本身是一个软件，需要额外下载，并将其bin加入环境变量之中。

解决

下载工具包

Windows下前往 graphviz官网下载即可
ubuntu可以直接sudo apt install graphviz亦可，如果不行，请前往graphviz官网下载或者可以直接点击本链接到Ubuntu官网搜索graphviz包

环境依赖请参考—— Ubuntu下安装依赖的几个解决方案

查看文件详情（Windows，Linux通用命令）

下载完成后，使用dot -verison命令，查询bin文件夹地址，图中白条处

Ubuntu环境下加入环境变量

然后加入环境变量，source /etc/profile 使其生效。

export PATH=$PATH:/usr/lib/x86_64-linux-gnu/graphviz

此时错误已经解决，可以继续运行xgboost代码了。

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