"RuntimeError:确保Graphviz可执行文件在系统路径上"安装Graphviz 2.38之后

问题描述

我下载了Graphviz 2.38 MSI版本，并安装在文件夹C:\Python34下，然后运行pip install Graphviz，一切正常.在系统的路径中，我添加了C:\Python34\bin.当我尝试运行测试脚本时，在filename=dot.render(filename='test')行中，我收到一条消息

I downloaded Graphviz 2.38 MSI version and installed under folder C:\Python34, then I run pip install Graphviz, everything went well. In system's path I added C:\Python34\bin. When I tried to run a test script, in line filename=dot.render(filename='test'), I got a message

 RuntimeError: failed to execute ['dot', '-Tpdf', '-O', 'test'], make sure the Graphviz executables are on your systems' path

我试图将"C:\Python34\bin\dot.exe"放在系统的路径中，但是它不起作用，甚至创建了一个新的环境变量"GRAPHVIZ_DOT"，其值"C:\Python34\bin\dot.exe"仍然不起作用.我尝试卸载Graphviz和pip uninstall graphviz，然后重新安装并再次进行pip安装，但是没有任何效果.

I tried to put "C:\Python34\bin\dot.exe" in system's path, but it didn't work, and I even created a new environment variable "GRAPHVIZ_DOT" with value "C:\Python34\bin\dot.exe", still not working. I tried to uninstall Graphviz and pip uninstall graphviz, then reinstall it and pip install again, but nothing works.

整个回溯消息是:

Traceback (most recent call last):
  File "C:\Python34\lib\site-packages\graphviz\files.py", line 220, in render
    proc = subprocess.Popen(cmd, startupinfo=STARTUPINFO)
  File "C:\Python34\lib\subprocess.py", line 859, in __init__
    restore_signals, start_new_session)
  File "C:\Python34\lib\subprocess.py", line 1112, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\Documents\Kissmetrics\curves and lines\eventNodes.py", line 56, in <module>
    filename=dot.render(filename='test')
  File "C:\Python34\lib\site-packages\graphviz\files.py", line 225, in render
    'are on your systems\' path' % cmd)
RuntimeError: failed to execute ['dot', '-Tpdf', '-O', 'test'], make sure the Graphviz executables are on your systems' path

有人对此有任何经验吗?

Does anybody have any experience with it?

推荐答案

您应该在系统中安装graphviz软件包(而不仅仅是python软件包).在 Ubuntu 上，您应该尝试:

You should install the graphviz package in your system (not just the python package). On Ubuntu you should try:

sudo apt-get install graphviz

这篇关于"RuntimeError:确保Graphviz可执行文件在系统路径上"安装Graphviz 2.38之后的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！