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From: Akira Li <4kir4.1i@gmail.com>
Subject: Re: Modify environment variable for subprocess
Date: Thu, 24 Sep 2015 03:12:01 +0300
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Xref: csiph.com comp.lang.python:97054

loial <jldunn2000@gmail.com> writes:

> I need to modify the LIBPATH environment variable when running a
> process via subprocess, but otherwise retain the existing environment.
>
> Whats the best way to do that?

Pass env=dict(os.environ, LIBPATH=value) parameter:

  import os
  import subprocess 
  
  subprocess.check_call('echo $LIBPATH', shell=True,
                        env=dict(os.environ, LIBPATH='/some/path'))