oct2py 没有看到 OCTAVE_EXECUTABLE 环境变量(Windows) [英] oct2py isn't seeing OCTAVE_EXECUTABLE environment variable (Windows)

问题描述

所以，我尝试在 Windows 上使用 oct2py，如下所示:

So, I'm trying to use oct2py on Windows, like so:

from oct2py import octave

这实际上是我重现错误所需的唯一代码.

That's literally the only code I need to reproduce the error.

当我执行这个时，我得到OSError: Octave Executable not found，请添加到路径或设置OCTAVE_EXECUTABLE"环境变量.但是，我已经将 OCTAVE_EXECUTABLE 设置为系统变量，它指向 "C:\Octave\Octave-4.4.1\bin\octave-cli-4.4.1.exe".打开命令行并运行 %OCTAVE_EXECUTABLE% 给了我 Octave CLI，所以我知道它是对的.

When I execute this, I get OSError: Octave Executable not found, please add to path or set"OCTAVE_EXECUTABLE" environment variable. However, I have already set OCTAVE_EXECUTABLE as a system variable, which points to "C:\Octave\Octave-4.4.1\bin\octave-cli-4.4.1.exe". Opening up the command line and running %OCTAVE_EXECUTABLE% gives me the Octave CLI, so I know it's right.

我试过重新启动.我还尝试将 Octave 文件夹添加到我的路径并删除 OCTAVE_EXECUTABLE.都不行.

I've tried rebooting. I've also tried adding the Octave folder to my Path and removing OCTAVE_EXECUTABLE. Neither work.

我也试过只使用 octave-cli.exe，我试过做 print(os.environ['OCTAVE_EXECUTABLE'])，返回预期路径.

I've also tried using just octave-cli.exe, and I've tried doing print(os.environ['OCTAVE_EXECUTABLE']), which returns the expected path.

这里有什么想法吗?

推荐答案

尽管您在评论中提到了:

In spite of what you mention in your comment:

似乎在某处，octave.exe 被octave-cli.exe 替换了.不再随 Octave 包分发 Octave.exe.其他人已成功将 OCTAVE_EXECUTABLE 指向 Octave-cli.exe

It appears that, somewhere along the line, octave.exe got replaced with octave-cli.exe. There is no longer an octave.exe distributed with the Octave package. Others have successfully pointed OCTAVE_EXECUTABLE at octave-cli.exe

最近有更多人遇到了类似的问题，几个小时前 oct2py 开发人员在 5.0.0 版本中修复了它.实际上他们说:

Recently more people had a similar issue and the oct2py developers fixed it in the 5.0.0 version some hours ago. Actually they said:

啊，我明白问题出在哪里了.方便的 octave 实例在您有机会设置 executable 属性之前创建.鉴于这一事实，我认为唯一正确的答案是删除可执行参数以支持使用 PATH 或 OCTAVE_EXECUTABLE 环境变量.

Ah, I see what the issue is here. The convenience octave instance is created before you get a chance to set the executable property. Given that fact, I think the only right answer is to remove the executable argument in favor of using PATH or the OCTAVE_EXECUTABLE environment variable.

无论如何，我不得不调整我的代码以使其工作更新环境变量OCTAVE_EXECUTABLE:

Anyway I had to adapt my code to make it work updating the environment variable OCTAVE_EXECUTABLE:

import shutil
import os
import sys

if sys.platform == 'win32':
    # os.environ['OCTAVE_EXECUTABLE'] = shutil.which('octave')
    # >> I had to replace this with this other line >>

    os.environ['OCTAVE_EXECUTABLE'] = shutil.which('octave-cli.exe')

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