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From: MRAB <python@mrabarnett.plus.com>
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Subject: Re: subprocess.Popen does not launch audacity
Date: Fri, 10 Jan 2025 20:32:08 +0000
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On 2025-01-10 19:15, Tim Johnson via Python-list wrote:
> Using Python 3.12.3 on Ubuntu 24.04
> 
> I've converted a legacy python2 script to python3. All went well.
> However, a glitch from python2 remains.
> 
> The script uses dmenu to create menus to pick applications. Applications
> are then invoked from python
> 
> using subprocess.Popen(). I have never been able to successfully launch
> audacity using this approach,
> 
> which does work for other apps.
> 
> I can launch audacity successfully using dmenu_run (on its own, outside
> of the script)
> 
> Below is the pertinent code:
> 
>    Popen(choice, stdout=PIPE, stderr=PIPE,
>                     stdin=PIPE, close_fds=True)
> 
> My guess is my argument list is either insufficient or an argument is
> causing the problem, but am unsure of which.
> 
> I have been retired from python programming for ten years, and am pretty
> rusty, but it is still fun. There are plenty
> 
> of other ways to successfully launch audacity but it would be great to
> make it work from this script.
> 

What is the value of 'choice'?

You could try printing out the value of 'choice' for one that works and 
the one that doesn't and then try them again interactively from the 
Python prompt with the given values. That should eliminate all but the 
essential code for easier debugging.