Pycharm中无法识别LD_LIBRARY_PATH (linux)

Question

我正在尝试从Pycharm中的python脚本运行一个名为"Cyclotron“的Geant4 (粒子模拟引擎)可执行文件。当我从命令行(即./Cyclotron )执行该文件时，它运行得非常好。

当我尝试使用subprocess.check_call()方法执行相同的bash命令时，我得到以下错误消息：

./Cyclotron: error while loading shared libraries: libG4zlib.so: 
cannot open shared object file: No such file or directory
Traceback (most recent call last):
  File "/home/nicolas/Geant4/geant4.10.04.p01/main_stuff/cyclotron- 
geant4/main.py", line 17, in <module>
    subprocess.check_call(command.split())
  File "/usr/lib/python3.6/subprocess.py", line 291, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['./Cyclotron']' returned non- 
zero exit status 127.`

这似乎是由于LD_LIBRARY_PATH变量在Pycharm中无法识别的事实造成的。例如，运行

import os
print(os.environ.get("LD_LIBRARY_PATH"))

返回None。我看到人们建议在Run->Edit Configurations下添加变量，并在环境变量下添加变量(我在默认情况下尝试了我的脚本和Python下的变量)，但仍然没有成功。

在命令行上，键入echo $LD_LIBRARY_PATH将返回/home/nicolas/Root/build/lib:/usr/lib/x86_64-linux-gnu:/home/nicolas/Geant4/install/lib。

下面是我的python代码：

import subprocess
import os

os.chdir("build")

bash_commands = [
    "cmake ..",
    "make -j4",
    "./Cyclotron"
]

for command in bash_commands:
    subprocess.check_call(command.split())

和输出：

/home/nicolas/PycharmProjects/Main/venv/bin/python 
/home/nicolas/Geant4/geant4.10.04.p01/main_stuff/cyclotron-geant4/main.py
-- Configuring done
-- Generating done
-- Build files have been written to: 
/home/nicolas/Geant4/geant4.10.04.p01/main_stuff/cyclotron-geant4/build
[100%] Built target Cyclotron
$LD_LIBRARY_PATH
./Cyclotron: error while loading shared libraries: libG4zlib.so: cannot 
open shared object file: No such file or directory
Traceback (most recent call last):
  File "/home/nicolas/Geant4/geant4.10.04.p01/main_stuff/cyclotron- 
geant4/main.py", line 14, in <module>
    subprocess.check_call(command.split())
  File "/usr/lib/python3.6/subprocess.py", line 291, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['./Cyclotron']' returned non-zero 
exit status 127.

Process finished with exit code 1

我使用的是带有Python 3.6解释器的Ubuntu 18.04，Pycharm 2018。

Answer 1

出于某种原因，我第二天再次尝试，Pycharm现在可以看到这个变量。我唯一尝试的不同之处就是在我的特定Run->Edit Configurations脚本的右上角勾选了Share框。即使我后来取消勾选它，该变量仍然可以识别。当我应用更改时，脚本变得轻松了，就像它从一个状态更改到另一个状态一样，但我不知道我修改了什么。

Answer 2

我在Ubuntu16.04上用Pycharm-2018.3遇到了这个问题。

以下是解决方案：

运行->编辑配置->环境-> Add LD_LIBRARY_PATH picture1

picture2

令人惊叹的事情发生了。