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#1 2012-09-12 08:02:01
- Pranavg1890
- Member
- From: Nagpur,India
- Registered: 2012-09-07
- Posts: 114
using subprocess in python3 to get output of a command
Hi Friends. I am writing a python3 script for audacious to check the internet for album cover of the current playing song and then display it in conky. I am trying to call a command from python and get it's output:
audtool current-song-tuple-data album
but when i use this command in python like this:
subprocess.check_output(["audtool", "current-song-tuple-data album"])
i get the following error:
Unknown command "current-song-tuple-data album". Try "audtool help".
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/usr/lib/python3.2/subprocess.py", line 522, in check_output
raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['audtool', 'current-song-tuple-data album']' returned non-zero exit status 1
Please , python experts on this forum, help me.
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#2 2012-09-12 08:54:53
- lunar
- Member
- Registered: 2010-10-04
- Posts: 95
Re: using subprocess in python3 to get output of a command
@Pranavg1890 Please read the error message. You need to put each argument into a separate list item.
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#3 2012-09-12 17:21:50
- Pranavg1890
- Member
- From: Nagpur,India
- Registered: 2012-09-07
- Posts: 114
Re: using subprocess in python3 to get output of a command
@lunar can you please elaborate your point by showing me how should i write? Many Thanks for reply.
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#4 2012-09-13 03:32:01
- Nisstyre56
- Member
- From: Canada
- Registered: 2010-03-25
- Posts: 85
Re: using subprocess in python3 to get output of a command
subprocess.check_output(["audtool", "current-song-tuple-data", "album"])In Zen they say: If something is boring after two minutes, try it for four. If still boring, try it for eight, sixteen, thirty-two, and so on. Eventually one discovers that it's not boring at all but very interesting.
~ John Cage
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#5 2012-09-13 04:14:11
- Pranavg1890
- Member
- From: Nagpur,India
- Registered: 2012-09-07
- Posts: 114
Re: using subprocess in python3 to get output of a command
@Nisstyre56 Many Thanks . It Worked.
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#6 2012-09-17 07:12:43
- Darksoul71
- Member
- Registered: 2010-04-12
- Posts: 319
Re: using subprocess in python3 to get output of a command
@Pranavg1890: Please add solved to your thread title then.
BTW: I found pexpect a good option for interacting with shell commands:
http://sourceforge.net/projects/pexpect/
It provides an easy way to deal with console output and react on certain patterns.
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