我正在Sublime Text 3上使用Python 3使用Graphviz。运行此代码时:
data = tree.export_graphviz(dtGini[55], out_file = None)
graph = graphviz.Source(data)
graph.render("testingthis")
我得到这些错误:
FileNotFoundError: [WinError 2] The system cannot find the file specified
During handling of the above exception, another exception occurred:
graphviz.backend.ExecutableNotFound: failed to execute ['dot', '-Tpdf', '-O', 'testingthis'], make sure the Graphviz executables are on your systems' PATH
似乎找不到所需的文件。在Sublime Text 3中,我对Conda的用户设置为:
{
// executable is the path to anaconda's python
// this python executable is used in order to find conda
"executable": "C:/ProgramData/Miniconda3/python.exe",
// Directory in which the conda envs are stored
// Default location is the user's home directory
"environment_directory": "C:/ProgramData/Miniconda3/envs",
// configuration is the path to conda's configuration file
"configuration": "~/.condarc"
}
我在控制台中有以下环境变量:
C:\ProgramData\Miniconda3\Scripts\
C:\ProgramData\Miniconda3\
C:\ProgramData\Miniconda3\conda-meta\history
C:\Users\X\AppData\Local\conda\conda\pkgs
C:\Users\X\AppData\Local\conda\conda\pkgs\graphviz-2.38-hfd603c8_2\Library\bin
C:\Users\X\AppData\Local\conda\conda\pkgs\graphviz-2.38-hfd603c8_2\Library\bin\dot.exe
在Anaconda提示符下,当我输入Python时,按Enter键,然后输入“ import graphviz”,我没有收到任何错误。在Sublime Text 3中,如果我只有诸如graph.py
这样的文件import graphviz
它执行时没有任何错误。
关于如何解决此问题的任何想法?它让我发疯。谢谢!
答案 0 :(得分:5)
我遵循了@aprameyo roy在此处> "RuntimeError: Make sure the Graphviz executables are on your system's path" after installing Graphviz 2.38
发布的解决方案所需的系统路径在我的PC上有所发现-我使用Ananconda安装了graphviz软件包。
将这两个命令添加到我的jupyter笔记本即可解决此问题-将C:/地址更改为您的安装位置:
(PS。我认为您需要在每次内核重新启动后重新运行它。)
# extra step to allow graphviz to be found
import os
os.environ["PATH"] += os.pathsep + 'C:/Users/jed/Anaconda3/envs/keras/Library/bin/graphviz/'
答案 1 :(得分:0)
对我来说,解决方案是从他们的网站上下载Graphviz (即使我已经从CMD下载了它),然后更改PATH变量以反映安装位置。