Re: Spawning a new UI process

[Steve Holden]

Ed Leafe wrote:

I'm working on a wxPython app (well, a Dabo app, but it's basically
the same thing) that presents the user with a selection of several
wxPython apps that exist on their system. They choose one, and I want to
then "launch" that app, as if they had typed "python myapp.py" from a
terminal window. The initial app can either terminate or continue;
that's not terribly important. The important thing is to get the
selected app to run in a separate process.
>
I've tried all the variants of os.spawn* and os.exec*, without
success. Either nothing happens, or a Python interpreter is opened in
the Terminal window I used to run the launcher. I want to do something
like:
>
cd (appdir)
pth = os.path.join(os .getcwd(), "main.py")
>
followed by one of:
>
os.spawnl(os.P_ NOWAIT, "main.py")
os.spawnl(os.P_ NOWAIT, pth)
os.spawnl(os.P_ NOWAIT, "python", pth)
os.spawnl(os.P_ NOWAIT, "python", "main.py")
os.spawnl(os.P_ NOWAIT, "/usr/bin/python", pth)
os.spawnl(os.P_ NOWAIT, "/usr/bin/python", "main.py")
>
The only result I've gotten is a Python interpreter is started, but
the GUI app that should be launched by 'main.py' is never run.
>
So what am I missing? How do I launch a python app in a separate
process from another Python app?
>

Ed! Good to see you on c.l.py!

a) Try using the subprocess module
b) Use *.pyw programs to ensure no console window is created.

regards
Steve
--
Steve Holden +1 571 484 6266 +1 800 494 3119
Holden Web LLC http://www.holdenweb.com/