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Editorial Team
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Asked: 2026-05-23T10:03:50+00:00

I found some articles and even stack| overflow questions addressing this subject, but I

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I found some articles and even stack|overflow questions addressing this subject, but I still can’t do it..

What I want to do is open an instance of firefox from python. then the python application should keep minding its own business and ignore the firefox process.

I was able to achive this goal on Windows-7 and XP using:

subprocess.Popen()

On OS X I tried:

subprocess.Popen(['/Applications/Firefox.app/Contents/MacOS/firefox-bin'])
subprocess.call(['/Applications/Firefox.app/Contents/MacOS/firefox-bin'])
subprocess.call(['/Applications/Firefox.app/Contents/MacOS/firefox-bin'], shell=True)
os.system('/Applications/Firefox.app/Contents/MacOS/firefox-bin')

(and probably some others I forgot) to no avail. My python app freezes till I go and close the firefox app.

What am I missing here? any clues?

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1 Answer

  1. Editorial Team

    You’ll need to detach the process somehow. I snatched this from spawning process from python

    import os
pid = os.fork()
if 0 == pid:
  os.system('firefox')
  os._exit(0)
else:
  os._exit(0)

    This spawns a forked headless version of the same script which can then execute whatever you like and quit directly afterwards.

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