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Re: Running lpr on windows from python

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On Wed, Apr 20, 2016 at 11:57 PM, loial <jldunn2000@gmail.com> wrote:
> I am trying to run lpr from python 2.7.10 on windows
>
> However I always get the error
> 'C:/windows/system32/lpr.exe ' is not recognized as an internal or external command,
> operable program or batch file.
>
> Even though typing the same at the  command prompt works OK
>
>
> Any ideas?
>
> I am using subprocess as follows
>
> process = subprocess.Popen(commandline, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
>
> where command line is
> C:/windows/system32/lpr.exe -S 172.28.84.38 -P RAW C:/john/myfile

You''re running that through the shell, which means you have to abide
by shell rules. I don't have a Windows handy, but I'm pretty sure its
shell isn't happy with forward slashes in the command line; I might be
wrong there.

My recommendation: Split that into separate arguments, pass them as a
list, and remove shell=True. And unless you need to be completely
explicit for some reason (eg to protect against path-based exploits),
cut the first argument to just "lpr" and let the binary be found
anywhere.

ChrisA

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Thread

Running lpr on windows from python loial <jldunn2000@gmail.com> - 2016-04-20 06:57 -0700
  Re: Running lpr on windows from python Chris Angelico <rosuav@gmail.com> - 2016-04-21 00:07 +1000
    Re: Running lpr on windows from python loial <jldunn2000@gmail.com> - 2016-04-20 07:25 -0700
  Re: Running lpr on windows from python Tim Golden <mail@timgolden.me.uk> - 2016-04-20 15:08 +0100
  Re: Running lpr on windows from python Random832 <random832@fastmail.com> - 2016-04-20 10:09 -0400
  Re: Running lpr on windows from python loial <jldunn2000@gmail.com> - 2016-04-20 07:21 -0700
    Re: Running lpr on windows from python Tim Golden <mail@timgolden.me.uk> - 2016-04-20 15:58 +0100
    Re: Running lpr on windows from python eryk sun <eryksun@gmail.com> - 2016-04-20 22:10 -0500
  Re: Running lpr on windows from python Stephen Hansen <me+python@ixokai.io> - 2016-04-20 14:01 -0700
  Re: Running lpr on windows from python loial <jldunn2000@gmail.com> - 2016-04-22 04:30 -0700
    Re: Running lpr on windows from python loial <jldunn2000@gmail.com> - 2016-04-22 08:07 -0700
      Re: Running lpr on windows from python eryk sun <eryksun@gmail.com> - 2016-04-22 12:04 -0500

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