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Groups > comp.lang.python > #59108

Re: Creating a function for a directory

References <521ed3d4-e2f7-4196-947d-61f94573a8ce@googlegroups.com>
Date 2013-11-12 09:38 +1100
Subject Re: Creating a function for a directory
From Chris Angelico <rosuav@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.2404.1384209537.18130.python-list@python.org> (permalink)

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On Tue, Nov 12, 2013 at 9:26 AM, Matt <mattgraves7@gmail.com> wrote:
> So I want to take the file, "desktop/test.txt" and write it to "desktop/newfolder/test.txt". I tried the below script, and it gave me: "IOError: [Errno 2] No such file or directory: 'desktop/%s.txt'". Any suggestions would be great.
>
>
>
> def firstdev(file):
>         in_file = open("desktop/%s.txt") % file
>         indata = in_file.read()
>         out_file = open("desktop/newfolder/%s.txt", 'w') % file

You're using the % operator, which does your interpolations, at the
wrong point. You want to be adjusting the file name, not adjusting the
opened file:

        in_file = open("desktop/%s.txt" % file)
        out_file = open("desktop/newfolder/%s.txt" % file, 'w')

ChrisA

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Thread

Creating a function for a directory Matt <mattgraves7@gmail.com> - 2013-11-11 14:26 -0800
  Re: Creating a function for a directory Joel Goldstick <joel.goldstick@gmail.com> - 2013-11-11 17:36 -0500
  Re: Creating a function for a directory Chris Angelico <rosuav@gmail.com> - 2013-11-12 09:38 +1100
  Re: Creating a function for a directory bob gailer <bgailer@gmail.com> - 2013-11-11 17:42 -0500
  Re: Creating a function for a directory Joel Goldstick <joel.goldstick@gmail.com> - 2013-11-11 17:44 -0500
  Re: Creating a function for a directory Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-11 22:45 +0000
  Re: Creating a function for a directory Rick Johnson <rantingrickjohnson@gmail.com> - 2013-11-11 14:51 -0800
    Re: Creating a function for a directory Chris Angelico <rosuav@gmail.com> - 2013-11-12 10:11 +1100
      Re: Creating a function for a directory Rick Johnson <rantingrickjohnson@gmail.com> - 2013-11-11 21:42 -0800
        Re: Creating a function for a directory Chris Angelico <rosuav@gmail.com> - 2013-11-12 17:02 +1100
    Re: Creating a function for a directory Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-11-12 00:33 +0000
      Re: Creating a function for a directory Neil Cerutti <neilc@norwich.edu> - 2013-11-12 13:42 +0000
  Re: Creating a function for a directory Matt <mattgraves7@gmail.com> - 2013-11-11 15:05 -0800
  Re: Creating a function for a directory Chris Angelico <rosuav@gmail.com> - 2013-11-12 09:51 +1100
  Re: Creating a function for a directory unknown <unknown@unknown.com> - 2013-11-12 10:07 +0000
    Re: Creating a function for a directory Peter Otten <__peter__@web.de> - 2013-11-12 11:24 +0100
      Re: Creating a function for a directory unknown <unknown@unknown.com> - 2013-11-12 11:26 +0000

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