Re: One line command line filter

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Date	Mon, 05 Sep 2011 22:47:23 +0200
From	Thomas Jollans <t@jollybox.de>
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Subject	Re: One line command line filter
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On 05/09/11 22:38, Jon Redgrave wrote:
> It seems unreasonably hard to write simple one-line unix command line
> filters in python:
> 
> eg: ls | python -c "<something>  print x.upper()"
> 
> to get at sys.stdin or similar needs an import, which makes a
> subsequent for-loop illegal.
> python -c "import sys; for x in sys.stdin(): print x" <<- SyntaxError
> 
> Am I missing something obvious?

ls | python -c "for line in __import__('sys').stdin: print (line.upper())"

Thread

One line command line filter Jon Redgrave <jredgrave@capisco.com> - 2011-09-05 13:38 -0700
  Re: One line command line filter Thomas Jollans <t@jollybox.de> - 2011-09-05 22:47 +0200
    Re: One line command line filter Jon Redgrave <jredgrave@capisco.com> - 2011-09-05 14:32 -0700
      Re: One line command line filter Terry Reedy <tjreedy@udel.edu> - 2011-09-05 19:02 -0400
  Re: One line command line filter Terry Reedy <tjreedy@udel.edu> - 2011-09-05 18:21 -0400
    Re: One line command line filter Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-09-06 09:18 +1000
      Re: One line command line filter Terry Reedy <tjreedy@udel.edu> - 2011-09-05 21:25 -0400
      Re: One line command line filter Hans Mulder <hansmu@xs4all.nl> - 2011-09-06 13:15 +0200
  Re: One line command line filter Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-09-06 09:29 +1000
  Re: One line command line filter John Wiegley <jwiegley@gmail.com> - 2011-09-06 01:51 -0500
  Re: One line command line filter Peter Otten <__peter__@web.de> - 2011-09-06 09:53 +0200

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