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Editorial Team
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Asked: 2026-06-14T00:46:07+00:00

I am running Ubuntu. If I type this into the terminal: >>> import subprocess

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I am running Ubuntu.
If I type this into the terminal:

>>> import subprocess
>>> subprocess.Popen('firefox')

This is returned:

<subprocess.Popen object at 0xb76c080c>
>>> nvfx_screen_get_param:95 -  Warning: unknown PIPE_CAP 30
nvfx_screen_get_param:95 -  Warning: unknown PIPE_CAP 30
nvfx_screen_get_param:95 -  Warning: unknown PIPE_CAP 55
nvfx_screen_get_param:95 -  Warning: unknown PIPE_CAP 56
nvfx_screen_get_param:95 -  Warning: unknown PIPE_CAP 59
nvfx_screen_get_param:95 -  Warning: unknown PIPE_CAP 58
nvfx_screen_get_param:95 -  Warning: unknown PIPE_CAP 30

It doesn’t return back to the python terminal: >>>

I am new to python on linux — can anyone show me what am I doing wrong? Thanks.

EDIT:

For anyone interested in fixing this, I solved the immediate issue this way:

from subprocess import PIPE,Popen
Popen('firefox',stdout=PIPE,stderr=PIPE)
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1 Answer

  1. Editorial Team

    Not the best way to open a browser. Maybe try this instead:

    import webbrowser
webbrowser.open("http://www.stackoverflow.com/")

    By the way, it has returned back to your python terminal, I can see that in the output. There has been some chatter on stdout or stderr from the process, which may have overwritten the >>> prompt, but if you press Enter a few times you will probably find you’re still at the REPL.

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