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Re: Best way to rewrite Popen

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Date Tue, 19 May 2015 19:43:06 +0200
From Jonas Wielicki <jonas@wielicki.name>
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On 19.05.2015 19:01, Cecil Westerhof wrote:
> At the moment I am playing with things like:
>     p = subprocess.Popen('ls -l', shell = True, stdout = subprocess.PIPE)
> 
> I think that most of the times this are the values I want. So it would
> be nice to overrule the defaults. What is the best way to do this? 

I would like to answer with a counter-question: Why do you want to do
this? What is the reason to use ls -l if you could also be using
os.listdir() or os.scandir()?

There are some reasons against screenscraping `ls` (locale-specifities
and environment variable dependencies of ls) and using shell=True (with
shells being huge complex beasts which may have unexpected security
issues, see Shellshock), so I’m not sure why you would want to do that.

regards,
jwi

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Thread

Best way to rewrite Popen Cecil Westerhof <Cecil@decebal.nl> - 2015-05-19 19:01 +0200
  Re: Best way to rewrite Popen Jon Ribbens <jon+usenet@unequivocal.co.uk> - 2015-05-19 17:36 +0000
    Re: Best way to rewrite Popen Cecil Westerhof <Cecil@decebal.nl> - 2015-05-19 21:13 +0200
      Re: Best way to rewrite Popen Jon Ribbens <jon+usenet@unequivocal.co.uk> - 2015-05-19 20:14 +0000
      Re: Best way to rewrite Popen Cecil Westerhof <Cecil@decebal.nl> - 2015-05-19 22:19 +0200
        Re: Best way to rewrite Popen Jon Ribbens <jon+usenet@unequivocal.co.uk> - 2015-05-19 21:28 +0000
          Re: Best way to rewrite Popen Cecil Westerhof <Cecil@decebal.nl> - 2015-05-20 00:23 +0200
            Re: Best way to rewrite Popen MRAB <python@mrabarnett.plus.com> - 2015-05-20 00:20 +0100
              Re: Best way to rewrite Popen Cecil Westerhof <Cecil@decebal.nl> - 2015-05-20 02:15 +0200
  Re: Best way to rewrite Popen Jonas Wielicki <jonas@wielicki.name> - 2015-05-19 19:43 +0200
  Re: Best way to rewrite Popen Chris Angelico <rosuav@gmail.com> - 2015-05-20 03:47 +1000
  Re: Best way to rewrite Popen Zachary Ware <zachary.ware+pylist@gmail.com> - 2015-05-19 12:55 -0500
  Re: Best way to rewrite Popen Chris Angelico <rosuav@gmail.com> - 2015-05-20 04:13 +1000
  Re: Best way to rewrite Popen Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2015-05-20 03:23 +0200

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