Only getting the first 6 lines

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From	Cecil Westerhof <Cecil@decebal.nl>
Newsgroups	comp.lang.python
Subject	Only getting the first 6 lines
Date	Thu, 01 Oct 2015 23:58:49 +0200
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I want to get the first 6 lines of ps output. For this I use:
========================================================================
from subprocess import check_output

ps_command = ('ps', '-eo', 'user,pid,pcpu,pmem,stat,start,time,cmd', '--sort')
message = '\n'.join(check_output(ps_command + ('-%cpu',)).decode("utf-8").splitlines()[0:6])
========================================================================

It works, but does not look very efficient. Is there a better way to
do this?

-- 
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof

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Only getting the first 6 lines Cecil Westerhof <Cecil@decebal.nl> - 2015-10-01 23:58 +0200
  Re: Only getting the first 6 lines Ian Kelly <ian.g.kelly@gmail.com> - 2015-10-01 16:58 -0600
  Re: Only getting the first 6 lines Cameron Simpson <cs@zip.com.au> - 2015-10-02 08:50 +1000
    Re: Only getting the first 6 lines Cecil Westerhof <Cecil@decebal.nl> - 2015-10-02 13:08 +0200
  Re: Only getting the first 6 lines Peter Otten <__peter__@web.de> - 2015-10-02 09:37 +0200
    Re: Only getting the first 6 lines Cecil Westerhof <Cecil@decebal.nl> - 2015-10-02 13:11 +0200

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