Detect if specific Python.app instance is already running

Newsgroups	comp.lang.python
Date	2015-06-07 07:31 -0700
Message-ID	<a3be1707-0eae-46fa-9921-e9c145816ad5@googlegroups.com> (permalink)
Subject	Detect if specific Python.app instance is already running
From	Andrei <andrei.fokau@gmail.com>

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Hello,

I am experimenting with OS X apps written in Python and need to detect if there is already an instance of Python.app running with certain script. My script modifies CFBundleName on-the-fly from "Python" to "MyApp" to change the app title in the menubar. If I start another instance and check CFBundleName of the running apps, it will only tell me the original value, i.e. "Python":

for app in NSWorkspace.sharedWorkspace().runningApplications():
    bundle = NSBundle.bundleWithURL_(app.bundleURL())
    name = bundle.infoDictionary().get('CFBundleName')
    if name in ('Python', 'MyApp'):
        print name  # => prints Python

So I need to find a way to mark a Python.app instance that runs MyApp script to be able to abort launching duplicate instances. Is there such way?

Thanks,
Andrei

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Detect if specific Python.app instance is already running Andrei <andrei.fokau@gmail.com> - 2015-06-07 07:31 -0700
  Re: Detect if specific Python.app instance is already running Andrei <andrei.fokau@gmail.com> - 2015-06-07 12:54 -0700
    Re: Detect if specific Python.app instance is already running Ned Deily <nad@acm.org> - 2015-06-07 16:07 -0700
      Re: Detect if specific Python.app instance is already running Andrei <andrei.fokau@gmail.com> - 2015-06-08 01:32 -0700
        Re: Detect if specific Python.app instance is already running Laura Creighton <lac@openend.se> - 2015-06-08 20:21 +0200
        Re: Detect if specific Python.app instance is already running Ned Deily <nad@acm.org> - 2015-06-12 12:08 -0700

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