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Groups > comp.lang.python > #72319

Re: Multi-line commands with 'python -c'

From Duncan Booth <duncan.booth@invalid.invalid>
Newsgroups comp.lang.python
Subject Re: Multi-line commands with 'python -c'
Date 2014-05-30 21:11 +0000
Message-ID <XnsA33DE1B7E35C5duncanbooth@127.0.0.1> (permalink)
References <mailman.10468.1401411146.18130.python-list@python.org>

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Chris Angelico <rosuav@gmail.com> wrote:

> Problem: Translate this into a shell one-liner:
> 
> import os
> for root, dirs, files in os.walk("."):
>     if len(dirs + files) == 1: print(root)
> 

This is one area where Windows seems to do better than Linux shells:

PS C:\python33> python -c "import os`nfor root, dirs, files in os.walk('.'):`n    if len(dirs + files) == 1: print(root)`n"
.\Doc
.\Lib\concurrent\__pycache__
.\Lib\curses\__pycache__
...

The `n shell escaped newline is interpreted well before Python runs.

Also the multiline version works and in Powershell ISE up-arrow pulls it back as a 
single unit for easy editing:

PS C:\python33> python -c @"
import os
for root, dirs, files in os.walk('.'):
    if len(dirs + files) == 1: print(root)
"@
.\Doc
.\Lib\concurrent\__pycache__
.\Lib\curses\__pycache__
... and so on ...


-- 
Duncan Booth

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Thread

Multi-line commands with 'python -c' Chris Angelico <rosuav@gmail.com> - 2014-05-30 10:52 +1000
  Re: Multi-line commands with 'python -c' Rustom Mody <rustompmody@gmail.com> - 2014-05-29 23:04 -0700
    Re: Multi-line commands with 'python -c' Rustom Mody <rustompmody@gmail.com> - 2014-05-29 23:45 -0700
      Re: Multi-line commands with 'python -c' Rustom Mody <rustompmody@gmail.com> - 2014-05-29 23:54 -0700
        Re: Multi-line commands with 'python -c' Peter Otten <__peter__@web.de> - 2014-05-30 09:33 +0200
      Re: Multi-line commands with 'python -c' Terry Reedy <tjreedy@udel.edu> - 2014-05-30 11:29 -0400
    Re: Multi-line commands with 'python -c' Chris Angelico <rosuav@gmail.com> - 2014-05-30 17:20 +1000
      Re: Multi-line commands with 'python -c' Rustom Mody <rustompmody@gmail.com> - 2014-05-30 05:47 -0700
        Re: Multi-line commands with 'python -c' Chris Angelico <rosuav@gmail.com> - 2014-05-30 22:58 +1000
  Re: Multi-line commands with 'python -c' Duncan Booth <duncan.booth@invalid.invalid> - 2014-05-30 21:11 +0000
    Re: Multi-line commands with 'python -c' Devin Jeanpierre <jeanpierreda@gmail.com> - 2014-05-30 14:42 -0700
    Re: Multi-line commands with 'python -c' Chris Angelico <rosuav@gmail.com> - 2014-05-31 07:47 +1000
      Re: Multi-line commands with 'python -c' Duncan Booth <duncan.booth@invalid.invalid> - 2014-05-31 16:41 +0000
        Re: Multi-line commands with 'python -c' Peter Otten <__peter__@web.de> - 2014-05-31 19:11 +0200
          Re: Multi-line commands with 'python -c' Duncan Booth <duncan.booth@invalid.invalid> - 2014-06-01 20:43 +0000

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