Running a subprocess in a venv

[Larry Martell]

On Sat, Oct 21, 2023 at 9:49 AM Johannes Findeisen <mailman at hanez.org> wrote:
>
> On Sat, 21 Oct 2023 09:01:18 -0400
> Larry Martell via Python-list <python-list at python.org> wrote:
>
> > I have a python script, and from that I want to run another script in
> > a subprocess in a venv. What is the best way to do that? I could write
> > a file that activates the venv then runs the script, then run that
> > file, but that seems messy. Is there a better way?
>
> How do you do that?

How? Open a file and write the commands I need then invoke that.

> It sounds messy but not wrong...
>
> I would activate the venv and then run my Python script. In the Python
> script you can call another python script in a subprocess like this:
>
> import sys
> import subprocess
>
> # https://docs.python.org/3/library/subprocess.html#popen-constructor
> proc = subprocess.Popen([sys.executable, "/path/to/an/otherscript.py"])
>
> # https://docs.python.org/3/library/subprocess.html#popen-objects
> # Do your process communication/handling... proc.communicate(),
> # proc.wait(), proc.terminate(), proc.kill() etc.
>
> Is this the answer you are looking for?
>
> Detailed docs: https://docs.python.org/3/library/subprocess.html

I know how to use Popen. What I was missing was running the script
using sys.executable. Thanks.